CN1972165B - An interference detection method and apparatus - Google Patents
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- CN1972165B CN1972165B CN2006101694782A CN200610169478A CN1972165B CN 1972165 B CN1972165 B CN 1972165B CN 2006101694782 A CN2006101694782 A CN 2006101694782A CN 200610169478 A CN200610169478 A CN 200610169478A CN 1972165 B CN1972165 B CN 1972165B
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Abstract
This invention discloses one interference test.
Description
Technical field
The present invention relates to wireless communication technology field, specifically relate to the interference detection method in the wireless communication system and realize the device of Interference Detection.
Background technology
In cordless communication network was built, because there are various Wireless Telecom Equipments in the opening of wireless channel in reality, these Wireless Telecom Equipments can be introduced spatial interference inevitably in cordless communication network.As everyone knows, interference problem can cause adverse consequences to business.In present network, a large amount of interference all is to disturb the periodic time-division, such as, the common interference such as personal portable telephone system (PHS, Personal Handle Phone System) and radar signal and so at present all belongs to PERIODIC INTERFERENCE.Certainly also have the interference of other types.These interference can have a strong impact on radio communication.Therefore, need in time to find the existence of interference and the feature of interference, handle so that disturb to remove.This shows, the existence of find disturbing, and judge that the type of disturbing is an important problem very.Common adoptable interference detection method is the amplitude detection method at present, and this method mainly is after definite received signal surpasses certain amplitude, promptly confirms to exist and disturbs.But the amplitude detection method is very not careful, can only distinguish interference signal roughly.Therefore, this detection method also just can only be distinguished PERIODIC INTERFERENCE roughly.And because this detection method can only be distinguished PERIODIC INTERFERENCE roughly, therefore, promptly allow to determine the type of PERIODIC INTERFERENCE also can't detect PERIODIC INTERFERENCE and classification thereof careful, exactly.In sum, also there is not a kind of Interference Detection scheme can detect PERIODIC INTERFERENCE and classification thereof careful, exactly at present.
Summary of the invention
The subject matter that one embodiment of the invention will solve is to provide a kind of interference detection method, with existing of definite PERIODIC INTERFERENCE, and definite type of disturbing.Another embodiment of the present invention also provides a kind of device of realizing Interference Detection.
A kind of interference detection method of one embodiment of the invention, this method may further comprise the steps: the short-time rating that obtains described received signal according to received signal, and obtaining the received signal short-time rating sequence formed by the short-time rating of described received signal, the duration of wherein said short-time rating is less than half of the interference period of interference signal or less than half of the minimum particle size of interference signal; Determine sequence to be detected according to the described short-time rating sequence of obtaining; Utilize default interference correlated series that described sequence to be detected is carried out correlation detection, obtain the testing result sequence, wherein said default interference correlated series is determined according to the interference period of interference signal, and noisy cycle value corresponding is 1 in the described interference correlated series, and glitch-free cycle value corresponding is 0; By value in the described testing result sequence and preset threshold value scope are compared, determine whether described received signal exists the time-division of described interference correlated series correspondence to disturb.
A kind of device of realizing Interference Detection of the embodiment of the invention, described device comprises: short-time rating acquisition module and interference detection module, wherein, described short-time rating acquisition module, be used for obtaining the short-time rating of described received signal according to received signal, the sequence that the short-time rating of described received signal is formed is as the short-time rating sequence, and described short-time rating sequence sent to interference detection module, the duration of wherein said short-time rating is less than half of the interference period of interference signal or less than half of the minimum particle size of interference signal; Described interference detection module, be used for determining sequence to be detected according to the described short-time rating sequence of receiving, utilize default interference correlated series that described sequence to be detected is carried out correlation detection, obtain the testing result sequence, and by value and preset threshold value scope in the described testing result sequence that obtains are compared, determine whether described received signal exists the time-division of described interference correlated series correspondence to disturb, wherein said default interference correlated series is determined according to the interference period of interference signal, and noisy cycle value corresponding is 1 in the described interference correlated series, and glitch-free cycle value corresponding is 0.
The embodiment of the invention is by obtaining the short-time rating sequence of received signal, and definite corresponding sequence to be detected, utilize default interference correlated series that sequence to be detected is carried out correlation detection afterwards, and by each value that detection is obtained and the comparison of preset threshold value scope, determine whether received signal exists the time-division of disturbing the correlated series correspondence to disturb, thereby realized detection to the time-division interference, promptly can detect PERIODIC INTERFERENCE careful, exactly, and can obtain the interference characteristic that disturbs, and then can reduce false triggering.
Description of drawings
Fig. 1 is the realization flow figure of the inventive method embodiment;
Fig. 2 is the structure chart of the present invention one device embodiment;
Fig. 3 is the structure chart of the another device embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is done further detailed description.
The scheme that the embodiment of the invention proposed is used for the cordless communication network of WCDMA and CDMA and so on.Describing for convenient, is that example is described with the WCDMA network mainly below.
Because WCDMA system when operation, the time domain structure of its received signal should be stably, has white noise character, though promptly signal owing to power control has fluctuating, the periodic structure on the life period not.If periodically disturb and exist, then can have the regular hour structure.
And for the WCDMA system, based on the power control characteristic of WCDMA system, disturb when existing, the power control meeting requires UE to improve power, thereby causes the power of the signal that the base station receives to increase.And when interference did not exist, the power control meeting required UE to reduce power, thereby the signal power that causes receiving reduces.Wherein, the signal that receives comprises UE signal and interference signal.Though power control can guarantee the signal to noise ratio of WCDMA system under certain interference, the periodicity of disturbing still can embody.This shows that even for the system with power control characteristic, embodiments of the invention also can judge whether according to the characteristic of the signal that receives to exist and disturb.
In addition, because not only periodic jamming signals can cause signal fluctuation, communication environments, professional variation etc. also can cause signal fluctuation, for distinguishing the signal fluctuation that PERIODIC INTERFERENCE and other reason cause, need carry out coherent detection at received signal, and if coupling relevant with the pattern of certain PERIODIC INTERFERENCE, the then provable interference that has the type, if and can't mate, illustrate that then this signal fluctuation may aforesaid other reason cause.
In view of above-mentioned analysis, the corresponding following steps of the implementation of the interference detection method that the embodiment of the invention provides:
Step 101, obtain short-time rating, and obtain the received signal short-time rating sequence formed by the short-time rating of received signal thus according to received signal.
In this step, obtain short-time rating according to received signal and specifically can be: carry out the short-time rating integration to received signal and obtain short-time rating.
The duration of the short-time rating that is obtained in this step can be greater than the interference period of interference signal, also can be less than half of interference signal cycle.Such as, for the bigger received signal of duty ratio, even the duration of short-time rating greater than the cycle of interference signal, also can find out interference signal by the embodiment of the invention.
Particularly, the duration that the short-time rating that is obtained can also be set is less than half of interference period.The duration that the short-time rating that is obtained can also further be set is less than half of the minimum particle size of interference signal.Why do a kind of setting in back, be because, the time granularity that time domain is disturbed is generally smaller, its time granularity is in the 100us level, such as, the cycle that PHS disturbs is 5ms, and its slot cycle is 625us, detects the interference of this level granularity surely for guaranteeing one, therefore require to be used in the received signal detection granularity that detects, be the sampling period,, can smoothly do not fallen by mean value to guarantee interference signal less than this interference time slot duration half.
And the short-time rating integration that this step is carried out specifically can be to carry out integration every several I channel and the Q channels of setting to receive channel of chip (chips), wherein, the chips number of this setting can calculate by the cyclophysis of interference signal, here, the cyclophysis of interference signal is generally the transmission duration of interference, the duration etc. of mourning in silence.
Specifically, the power integration that I channel and Q channel are carried out comprises: the power P that obtains I channel and Q channel at first respectively
I, P
Q, again to these two power P
I, P
QCarry out a square summation, afterwards again to this and sqrt.This power integration is concrete as formula
Shown in.Thereby can obtain a plurality of short-time ratings of received power by this processing, and these short-time ratings are formed a sequence.
Concrete numerical value for above-mentioned definite chips, with the WCDMA system, and the duration that needs the short-time rating be obtained is example than half of the minimum particle size of interference signal is little, 3.84Mchips was arranged in 1 second in the WCDMA system, the corresponding 1/3.84M=0.26us of therefore every chip is at the slot cycle of 625us, it also is the transmission duration of 625us, the chips number of this short-time rating should be less than: 312.5/0.26=1202, thus this chips number specifically can be set to 512chips.Therefore, detect the interference that slot cycle is 625us, then can carry out integral and calculating to the I channel of receive channel and the power of Q channel, to obtain a plurality of short-time ratings of receive channel every 512chips as needs.Obviously, if the duration of the short-time rating that is obtained is littler than half of the interference period of interference signal, then the chips number of short-time rating should be less than: 2500/0.26=9615, thus can get than the little value of this value as employed chips number.If the duration of the short-time rating that is obtained is without limits, then can calculate with an interference period, such as, the chips number of short-time rating should be less than 5000/0.26=19230, can certainly adopt other computational methods to determine this chips number.
Step 102, determine sequence X to be detected (n) according to the short-time rating sequence of step 101 gained.
The determined sequence to be detected of this step can directly be the short-time rating sequence of step 101 gained, also can be a certain number of data of intercepting from the short-time rating sequence, and forms sequence to be detected by the data that intercepted out.
For a certain number of data conditions of intercepting, for the false triggering that the randomness that reduces because of signal causes, can also preset a particular value, the data number that is intercepted in the step 101 need be greater than this particular value.Wherein, this particular value can calculate according to accuracy rating, such as, can be according to formula
Determine that wherein, σ is the root-mean-square deviation of received signal under noiseless situation, n is this particular value, and L is the threshold value under the noiseless situation of setting.
Specifically, for different accuracy of detection requirements, the data number difference that from the short-time rating sequence, intercepts in the above-mentioned steps 101.Such as, if the root-mean-square deviation σ of received signal under noiseless situation is 1, setting threshold is 0.1, then according to formula
Should be no less than 900 values in the sequence X to be detected (n) that definite requirement obtains.And if threshold setting is 0.3, then according to formula
Should be no less than 100 values in the sequence X to be detected (n) that definite requirement obtains.And because the duty ratio difference of interference sequence, the data number of the short-time rating sequence that above-mentioned steps 101 obtains is preferably in more than 10 times of sequence X (n) numerical value.
In addition, can also be before in the step 102 in definite sequence X to be detected (n), make normalized to corresponding each performance number, afterwards with the sequence (n) that obtains sequence to be detected as use in step 103.
And performed normalized specifically can be that each performance number is averaged, and each performance number is deducted mean value.Thereby make each value in the sequence X to be detected (n) for deducting the performance number after the described mean value.Therefore, after adopting normalized, the average x of sequence X to be detected (n) is 0.
Step 103, the sequence X to be detected (n) of utilizing default interference correlated series that step 102 is determined are carried out correlation detection, thereby obtain the testing result sequence, and, determine whether this received signal exists the time-division of described interference correlated series correspondence to disturb by to the comparison of each value in the testing result sequence with the preset threshold value scope.
Before describing the processing of step 103 in specific embodiment in detail, reach at first to received signal and disturb correlated series to analyze.
For received signal, if disturb to exist, then can think to satisfy the sequence of white noise character, and its distribution satisfies normal distribution, the average of this sequence is x, root-mean-square deviation is σ.According to white noise character, the new sequence that extraction part value is wherein formed also satisfies normal distribution.
Therefore, this step 103 can be utilized n value in the sequence X (n) of disturbing correlated series intercepting step 102 gained, and this n value averaged, if not corresponding with disturbing correlated series interference exists, then the serial mean that is extracted has 97.7% possibility can drop in its confidential interval, and the confidential interval of this normal signal is
。Certainly, if sequence X (n) is adopted normalized, promptly each value all can deduct average, and then the x of sequence X (n) is 0.If but exist and the corresponding interference of interference correlated series, then its relevant back average will inevitably drop in other confidential interval different with above-mentioned interval, this confidential interval is called the confidential interval of interference signal.And if above-mentioned two kinds of confidential intervals are not intersected, then can reduce the probability of false triggering greatly, promptly reduce normal signal erroneous judgement is the probability of interference signal, therefore, confidential interval that can interference signal is set to
And
Thereby, carry out convolution by the sequence X (n) that obtains by 0 and 1 interference correlated series of forming and step 102, and 0 representative is noiseless, 1 representative has interference, if disturb correlated series to align with sequence X (n), then the value that obtains of convolution is for may be owing to disturb the received signal that causes to emphasize the value that increases, in the case, if the average of these values greater than
Or less than
Then explanation has the probability more than 97.7% to have interference.
Based on above-mentioned analysis, can determine in the such scheme, at first to preset and disturb correlated series H (n) according to the interference characteristic that may exist, set interference correlated series H (n) can be identical with data number in the sequence X to be detected (n), also can be different, as long as guarantee to disturb the interference period of the setting of 0 and 1 among the correlated series H (n) interference signal corresponding corresponding with it.Such as, single channel for the PHS base station disturbs, comprise among this interference correlated series H (n) 0.625ms 1 and 4.375ms 0, short-time rating for 512chips, at 5ms, be to carry out 5000/ (512 * 0.26)=37.5 time Interference Detection in time of 5000us, and at each interference period, be in the time of 625us, can carry out 625/ (512 * 0.26)=4 time Interference Detection, because sequence must be integer, so this sequence can be set to comprise 75 numerical value, and this sequence is specially: 1,1,1,1,0,0,0 (totally 34 0), 1,1,1,1,0,0,0 (totally 33 0).For the PHS4 channel disturbance, then comprise among this interference correlated series H (n) 2.5ms 1 and 2.5ms 0, therefore this sequence also is to comprise 75 numerical value, and this sequence specifically can be: 1,1,1,1 (totally 19 1), 0,0,0 (totally 19 0), 1,1,1,1 (totally 19 1), 0,0,0 (totally 18 0).For other interference, then can determine the corresponding correlated series H (n) of interference according to its interference period equally.
The processing of step 103 afterwards specifically comprises:
Steps A, default interference correlated series H (n) progressively is shifted, interference correlated series after the sequence X to be detected (n) that step 102 is obtained and the each displacement carries out convolution, and a plurality of values that each convolution obtains are got average, all averages that obtain are formed testing result sequence Y (τ).
Y(τ)＝∑X(n)H(n-τ)
Step B, all values among the testing result sequence Y (τ) and preset threshold value scope are compared, whether have the time-division interference corresponding with this interferences correlated series to determine received signal.
By above analysis as can be known, this threshold range can be
Also can be (0,
And
If preceding a kind of threshold range, then all values of step B in determining the testing result sequence all during the value in this scope, can determine not exist the corresponding time-division to disturb; Otherwise,, then determine to exist to disturb if when promptly having value not in this scope.And if a kind of threshold range in back then when determining that existence falls into the value of this scope, can determine to exist the corresponding time-division to disturb; If all values all not in this scope, then determines not exist interference.
The embodiment of the invention also provides a kind of system that realizes Interference Detection, and the communicator in this system comprises short-time rating acquisition module and interference detection module shown in Figure 2.This communicator specifically can be the base station, also can be other devices in the system.Below in conjunction with Fig. 2 and Fig. 3 this device is specifically described.
The interference detecting apparatus embodiment of realization said method embodiment specifically comprises short-time rating acquisition module and interference detection module as shown in Figure 2, wherein,
The short-time rating acquisition module is used for obtaining short-time rating according to received signal, and the sequence that the short-time rating of received signal is formed is as the short-time rating sequence, and this short-time rating sequence is sent to interference detection module;
Interference detection module, be used for determining sequence to be detected according to the short-time rating sequence of receiving, utilize default interference correlated series that this sequence to be detected is carried out correlation detection, and, determine whether this received signal exists the time-division of this interference correlated series correspondence to disturb by each value in the testing result sequence that obtains and preset threshold value scope are compared.
As seen from Figure 3, above-mentioned short-time rating acquisition module specifically can comprise: the short-time rating sequence forms module and short-time rating sequence sending module.Specifically, the short-time rating sequence forms module can obtain short-time rating according to received signal, and the sequence that the short-time rating of received signal is formed is as the short-time rating sequence, and sends to described interference detection module by described short-time rating sequence sending module.
As seen from Figure 3, above-mentioned interference detection module specifically can comprise: correlation detection module and interference judge module.
Specifically, the correlation detection module, be used for determining sequence to be detected, and utilize default interference correlated series that described sequence to be detected is carried out correlation detection, and the testing result sequence of gained is sent to described interference judge module according to the short-time rating sequence of receiving.
Disturb judge module, then be used for value and the preset threshold value scope of the testing result sequence received are compared, determine whether described received signal exists the time-division interference of described interference correlated series correspondence.
Short-time rating acquisition module among Fig. 2 obtains short-time rating according to received signal, and the short-time rating acquisition module obtains short-time rating by carrying out the short-time rating integration to received signal.Certainly, if the short-time rating acquisition module forms module by the short-time rating sequence and short-time rating sequence sending module is formed, then should handle specifically and form the module execution by the short-time rating sequence.
And the described short-time rating integration that carries out to received signal specifically can comprise: every the chips number of setting the I channel and the Q channel of receive channel carried out integration, and the set point of described chips number is definite by the periodic characteristic of estimated interference signal.Concrete integral processing repeats no more as previously mentioned here.
The short-time rating acquisition module, or short-time rating sequence wherein forms module, carry out the short-time rating integration to received signal, specifically can be to obtain half the short-time rating of duration less than the interference period of interference signal, also can be to obtain half the short-time rating of duration less than the minimum particle size of interference signal.
In addition, default interference correlated series specifically can be determined according to the interference period of interference signal, and in sequence, noisy cycle value corresponding is 1, and glitch-free cycle value corresponding is 0.
In the above-mentioned interference detection module, determine sequence to be detected according to the short-time rating sequence of receiving, specifically can be directly with the short-time rating sequence received as sequence to be detected, can also be a plurality of data of intercepting from the short-time rating sequence, and with it as sequence to be detected.And for above-mentioned second kind of situation, promptly for the processing of a plurality of data of intercepting from the short-time rating sequence, the data number that is intercepted can also be set to greater than default particular value.The computational methods of this particular value repeat no more as previously mentioned here.In addition, if interference detection module specifically is made up of correlation detection module and interference judge module, then above-mentioned processing specifically can be carried out by correlation detection module wherein, and these following processing are carried out by the correlation detection module too.
In the above-mentioned interference detection module, when determining sequence to be detected, can also be that the data of forming sequence to be detected are carried out normalized, and the numerical value after will handling be formed described sequence to be detected according to the short-time rating sequence.
The correlation detection that above-mentioned interference detection module is carried out specifically can be, by the interference correlated series progressively is shifted, and the interference correlated series after sequence just to be detected and the each displacement carries out convolution, and a plurality of values that each convolution obtains are got average, and all averages that obtain are formed the testing result sequence.
In addition, as previously mentioned, the preset threshold value scope can be:
In the case, interference detection module determines not exist interference signal when then all values in determining described testing result sequence is all in described threshold range; Defining one or more values outside described threshold range the time, determine to exist interference signal.
The preset threshold value scope can also be:
With
In the case, interference detection module determines not exist interference signal when then all values in determining described testing result sequence is not all in described threshold range, defining one or more values in described threshold range the time, determines to exist interference signal.
The above only is the preferable implementation of the embodiment of the invention, not in order to limit protection scope of the present invention.
Claims (18)
1. an interference detection method is characterized in that, this method may further comprise the steps:
Obtain the short-time rating of described received signal according to received signal, and obtain the received signal short-time rating sequence formed by the short-time rating of described received signal, wherein, the duration of described short-time rating is less than half of the interference period of interference signal or less than half of the minimum particle size of interference signal;
Determine sequence to be detected according to the described short-time rating sequence of obtaining;
Utilize default interference correlated series that described sequence to be detected is carried out correlation detection, obtain the testing result sequence, wherein, described default interference correlated series is determined according to the interference period of interference signal, and noisy cycle value corresponding is 1 in the described interference correlated series, and glitch-free cycle value corresponding is 0;
By value in the described testing result sequence and preset threshold value scope are compared, determine whether described received signal exists the time-division of described interference correlated series correspondence to disturb.
2. method according to claim 1 is characterized in that, describedly obtains short-time rating according to received signal and is: obtain short-time rating by carrying out the short-time rating integration to received signal.
3. method according to claim 1 and 2, it is characterized in that, describedly obtain short-time rating according to received signal and comprise: every the chip chips number of setting the I channel and the Q channel of receive channel carried out integration, and the set point of described chips number is definite by the periodic characteristic of estimated interference signal.
4. method according to claim 1 is characterized in that,
The short-time rating sequence that described basis is obtained determines that sequence to be detected comprises:
Directly with described short-time rating sequence as sequence to be detected;
Perhaps,
The a plurality of data of intercepting from the short-time rating sequence of being obtained, and the sequence of being made up of a plurality of data of described intercepting is as sequence to be detected.
5. method according to claim 1, it is characterized in that, the short-time rating sequence that described basis is obtained determines that sequence to be detected comprises: intercept a plurality of data in the described short-time rating sequence, and the data number that is intercepted is greater than default particular value, and the data that described intercepting obtains are formed sequence to be detected.
6. method according to claim 5 is characterized in that, described default particular value is according to formula
Determine that wherein, σ is the root-mean-square deviation of received signal under noiseless situation, n is this particular value, and L is the threshold value under the noiseless situation of setting.
7. according to claim 1,2,4,5 or 6 described methods, it is characterized in that, the short-time rating sequence that described basis is obtained determines that sequence to be detected comprises: the data of forming sequence to be detected are carried out normalized, and form described sequence to be detected by described numeric data after treatment.
8. according to claim 1,2,4,5 or 6 described methods, it is characterized in that, the default interference correlated series of described utilization carries out correlation detection to described sequence to be detected and comprises: progressively be shifted to disturbing correlated series, and the interference correlated series after sequence to be detected and the each displacement carried out convolution, and a plurality of values that each convolution obtains are got average, form the testing result sequence by all averages that obtain.
9. according to claim 1,2,4 or 5 described methods, it is characterized in that,
Described preset threshold value scope is:
Wherein, x is the average of short-time rating sequence or sequence to be detected, and σ is corresponding root-mean-square deviation, and n is the numerical value number of sequence to be detected;
It is described by determining relatively whether described received signal exists the time-division of described interference correlated series correspondence to disturb and be: if all values in the testing result sequence is all in described threshold range, then determine not exist interference signal, if one or more values are arranged outside described threshold range, then determine to exist interference signal;
Perhaps, described preset threshold value scope is:
With
Wherein, x is the average of short-time rating sequence or sequence to be detected, and σ is corresponding root-mean-square deviation, and n is the numerical value number of sequence to be detected;
It is described by determining relatively whether described received signal exists the time-division of described interference correlated series correspondence to disturb and be: if all values in the testing result sequence is not all in described threshold range, then determine not exist interference signal, if one or more values are arranged in described threshold range, then determine to exist interference signal.
10. a device of realizing Interference Detection is characterized in that, described device comprises: short-time rating acquisition module and interference detection module, wherein,
Described short-time rating acquisition module, be used for obtaining the short-time rating of described received signal according to received signal, the sequence that the short-time rating of described received signal is formed is as the short-time rating sequence, and described short-time rating sequence sent to interference detection module, wherein, the duration of described short-time rating is less than half of the interference period of interference signal or less than half of the minimum particle size of interference signal;
Described interference detection module, be used for determining sequence to be detected according to the described short-time rating sequence of receiving, utilize default interference correlated series that described sequence to be detected is carried out correlation detection, obtain the testing result sequence, and by value and preset threshold value scope in the described testing result sequence that obtains are compared, determine whether described received signal exists the time-division of described interference correlated series correspondence to disturb, wherein, described default interference correlated series is determined according to the interference period of interference signal, and noisy cycle value corresponding is 1 in the described interference correlated series, and glitch-free cycle value corresponding is 0.
11. device according to claim 10 is characterized in that, described short-time rating acquisition module comprises: the short-time rating sequence forms module and short-time rating sequence sending module, wherein,
Described short-time rating sequence forms module and is used for obtaining short-time rating according to received signal, and the sequence that the short-time rating of received signal is formed is as the short-time rating sequence, and sends to described interference detection module by described short-time rating sequence sending module.
12. device according to claim 11 is characterized in that, described short-time rating sequence forms module, is used for obtaining short-time rating by carrying out the short-time rating integration to received signal.
13. device according to claim 11, it is characterized in that, described short-time rating sequence forms module, be used for by carrying out the short-time rating integration to received signal, obtain half the short-time rating of duration, perhaps obtain half the short-time rating of duration less than the minimum particle size of interference signal less than the interference period of interference signal.
14. device according to claim 10 is characterized in that, described interference detection module comprises: correlation detection module and interference judge module, wherein,
Described correlation detection module, be used for determining sequence to be detected according to the short-time rating sequence of receiving, and utilize default interference correlated series that described sequence to be detected is carried out correlation detection, and the testing result sequence of gained is sent to described interference judge module;
Described interference judge module is used for the value and the preset threshold value scope of the testing result sequence received are compared, and determines according to comparative result whether described received signal exists the time-division of described interference correlated series correspondence to disturb.
15. device according to claim 14 is characterized in that, described correlation detection module, the short-time rating sequence that is used for directly receiving be as sequence to be detected, perhaps a plurality of data of intercepting from the short-time rating sequence, and with it as sequence to be detected.
16. device according to claim 14 is characterized in that, described correlation detection module be further used for the data of forming sequence to be detected are carried out normalized, and the numerical value after will handling is formed described sequence to be detected.
17. device according to claim 14, it is characterized in that, described correlation detection module, be used for by the interference correlated series progressively is shifted, and the interference correlated series after sequence to be detected and the each displacement carried out convolution, and a plurality of values that each convolution obtains are got average, and all averages that obtain are formed the testing result sequence.
18. device according to claim 14 is characterized in that,
Described preset threshold value scope is:
Wherein, x is the average of short-time rating sequence or sequence to be detected, and σ is corresponding root-mean-square deviation, and n is the numerical value number of sequence to be detected;
Described interference judge module is used for determining not exist interference signal when all values of determining described testing result sequence is all in described threshold range, defining one or more values outside described threshold range the time, determines to exist interference signal;
Described preset threshold value scope or be:
With
Wherein, x is the average of short-time rating sequence or sequence to be detected, and σ is corresponding root-mean-square deviation, and n is the numerical value number of sequence to be detected;
Described interference judge module is used for determining not exist interference signal when all values of determining described testing result sequence is all not in described threshold range, defining one or more values in described threshold range the time, determines to exist interference signal.
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| TWI487297B (en) * | 2009-06-24 | 2015-06-01 | Mstar Semiconductor Inc | Interference detector and method thereof |
| CN102045738B (en) * | 2009-10-19 | 2015-10-21 | 中兴通讯股份有限公司 | Interference detection method and device |
| CN102833190B (en) * | 2011-06-13 | 2015-05-20 | 联芯科技有限公司 | Edge detection method and device for constant envelope same frequency interference |
| CN105165052A (en) * | 2014-02-21 | 2015-12-16 | 华为技术有限公司 | Spectrum conflict processing method and apparatus |
| CN108882303B (en) * | 2017-05-08 | 2020-09-25 | 大唐移动通信设备有限公司 | Interference avoidance method and device |
| CN110275171B (en) * | 2018-03-15 | 2021-03-02 | 郑州宇通客车股份有限公司 | Vehicle radar detection control method and vehicle |
| CN112887235B (en) * | 2020-12-30 | 2022-11-29 | 鹤壁天海电子信息系统有限公司 | Interference detection method of received signal, terminal and storage device |
| CN115052309A (en) * | 2021-03-09 | 2022-09-13 | 中兴通讯股份有限公司 | Interference detection method, device, equipment and storage medium |
| CN113923091A (en) * | 2021-08-25 | 2022-01-11 | 珠海全志科技股份有限公司 | Offset interference detection method and device based on phase weighting |
| CN115379476B (en) * | 2022-08-10 | 2024-03-19 | 中国联合网络通信集团有限公司 | Method, device, equipment and storage medium for determining cell interference type |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103222A (en) * | 1992-11-20 | 1995-05-31 | 马格纳沃斯电子系统公司 | Spread spectrum communication system |
| US5475869A (en) * | 1993-05-28 | 1995-12-12 | Nec Corporation | Radio base station capable of distinguishing between interference due to collisions of outgoing call signals and an external interference noise |
| CN1157073A (en) * | 1994-08-02 | 1997-08-13 | 艾利森公司 | Method of and apparatus for interference rejection combining in multi-antenna digital cellular communications systems |
| CN1228643A (en) * | 1997-12-29 | 1999-09-15 | 三星电子株式会社 | Pseudo noise code acquisition apparatus for direct sequence spread spectrum communications |
| CN1278971A (en) * | 1997-09-15 | 2001-01-03 | 自动电信公司 | Practical space-time radio method for cdma communication capacity enhancement |
| CN1279567A (en) * | 1999-06-25 | 2001-01-10 | 中国科学技术大学 | Multiple user interferences cancellation method for database inquiry and threshold judgement and receiver |
| CN1339202A (en) * | 1999-01-22 | 2002-03-06 | 艾利森公司 | Apparatus and methods for interference cancellation in spread spectrum communication system |
| CN1388662A (en) * | 2001-05-25 | 2003-01-01 | 株式会社Ntt都科摩 | Interference detecting method and interference avoiding system for radio communication line |
-
2006
- 2006-12-15 CN CN2006101694782A patent/CN1972165B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103222A (en) * | 1992-11-20 | 1995-05-31 | 马格纳沃斯电子系统公司 | Spread spectrum communication system |
| US5475869A (en) * | 1993-05-28 | 1995-12-12 | Nec Corporation | Radio base station capable of distinguishing between interference due to collisions of outgoing call signals and an external interference noise |
| CN1157073A (en) * | 1994-08-02 | 1997-08-13 | 艾利森公司 | Method of and apparatus for interference rejection combining in multi-antenna digital cellular communications systems |
| CN1278971A (en) * | 1997-09-15 | 2001-01-03 | 自动电信公司 | Practical space-time radio method for cdma communication capacity enhancement |
| CN1228643A (en) * | 1997-12-29 | 1999-09-15 | 三星电子株式会社 | Pseudo noise code acquisition apparatus for direct sequence spread spectrum communications |
| CN1339202A (en) * | 1999-01-22 | 2002-03-06 | 艾利森公司 | Apparatus and methods for interference cancellation in spread spectrum communication system |
| CN1279567A (en) * | 1999-06-25 | 2001-01-10 | 中国科学技术大学 | Multiple user interferences cancellation method for database inquiry and threshold judgement and receiver |
| CN1388662A (en) * | 2001-05-25 | 2003-01-01 | 株式会社Ntt都科摩 | Interference detecting method and interference avoiding system for radio communication line |
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|---|---|
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