CN1972165A - An interference detection method and apparatus - Google Patents

Abstract

The invention discloses an interference detection method. The method comprises: obtaining short-term power according to a received signal, and obtaining a sequence composed of the short-term power of the received signal; determining a sequence to be detected according to the obtained short-time power sequence, and using performing correlation detection on the sequence to be detected with the set interference correlation sequence, and comparing the values in the obtained detection result sequence with the preset threshold range to determine whether the received signal has the corresponding interference correlation sequence Time interference. The invention also discloses a device for realizing interference detection. The solution of the invention solves the problem that the prior art cannot detect the periodic interference meticulously and accurately. The invention realizes the detection of time-division interference, and can obtain the periodic characteristics of the interference, thereby reducing false triggering.

Description

Interference detection method and device

technical field

The invention relates to the technical field of wireless communication, in particular to an interference detection method in a wireless communication system and a device for realizing interference detection.

Background technique

In the construction of wireless communication networks, due to the openness of wireless channels, there are various wireless communication devices in reality, and these wireless communication devices will inevitably introduce spatial interference into the wireless communication network.

Interference issues are well known to have adverse consequences for business. In the current network, a large amount of interference is periodic time-division interference. For example, common interference such as Personal Handle Phone System (PHS, Personal Handle Phone System) and radar signals are periodic interference. Of course there are other types of distractions as well. These interferences can seriously affect wireless communications. Therefore, it is necessary to discover the existence and characteristics of interference in time, so as to perform interference removal processing.

It can be seen from this that it is very important to find the existence of interference and determine the type of interference.

The commonly used interference detection method at present is the amplitude detection method, which is mainly to confirm the existence of interference after it is determined that the received signal exceeds a certain amplitude. However, the amplitude detection method is very imprecise and can only roughly distinguish the interference signal. Therefore, this detection method can only roughly distinguish periodic interference. However, since this detection method can only roughly distinguish the periodic interference, even if the type of the periodic interference can be determined, it cannot detect the periodic interference and its type meticulously and accurately.

To sum up, there is currently no interference detection scheme that can detect periodic interference and its types meticulously and accurately.

Contents of the invention

In view of this, the main problem to be solved by an embodiment of the present invention is to provide a method for detecting interference, so as to determine the existence of periodic interference and determine the type of interference.

Another embodiment of the present invention also provides a device for realizing interference detection.

In order to solve the above problems, the present invention provides the following technical solutions:

An interference detection method according to an embodiment of the present invention, the method includes the following steps:

Acquiring the short-term power according to the received signal, and obtaining the short-term power sequence of the received signal composed of the short-term power of the received signal;

determining a sequence to be detected according to the acquired short-term power sequence;

performing correlation detection on the sequence to be detected by using a preset interference correlation sequence to obtain a detection result sequence;

By comparing the values in the detection result sequence with a preset threshold range, it is determined whether the time-division interference corresponding to the interference-related sequence exists in the received signal.

A device for realizing interference detection according to an embodiment of the present invention, the device includes:

A short-term power acquisition module and an interference detection module, wherein,

The short-term power acquisition module is used to obtain short-term power according to the received signal, use the sequence composed of the short-term power of the received signal as the short-term power sequence, and send the short-term power sequence to the interference detection module;

The interference detection module is used to determine the sequence to be detected according to the received short-term power sequence, use the preset interference correlation sequence to perform correlation detection on the sequence to be detected, and use the value in the obtained detection result sequence Compared with a preset threshold range, it is determined whether the received signal has time-division interference corresponding to the interference-related sequence.

In the embodiment of the present invention, by obtaining the short-term power sequence of the received signal, and determining the corresponding sequence to be detected, and then using the preset interference correlation sequence to perform correlation detection on the sequence to be detected, and by comparing each value obtained by detection with the preset Comparing the threshold range of the received signal to determine whether there is time-division interference corresponding to the interference-related sequence in the received signal, thereby realizing the detection of time-division interference, that is, the periodic interference can be detected meticulously and accurately, and the interference characteristics of the interference can be obtained. Reduce false triggers.

Description of drawings

Fig. 1 is the implementation flowchart of the method embodiment of the present invention;

Fig. 2 is a structural diagram of a device embodiment of the present invention;

Fig. 3 is a structural diagram of another device embodiment of the present invention.

Detailed ways

Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

The solutions proposed by the embodiments of the present invention are used in wireless communication networks such as WCDMA and CDMA. For the convenience of description, the WCDMA network is mainly used as an example for description below.

When the WCDMA system is running, the time-domain structure of the received signal should be stable and have white noise characteristics, that is, although the signal has fluctuations due to power control, there is no periodic structure in time. And if there are periodic disturbances, there will be a certain temporal structure.

And for the WCDMA system, based on the power control characteristics of the WCDMA system, when interference exists, the power control will require the UE to increase the power, which will increase the power of the signal received by the base station. When the interference does not exist, the power control will require the UE to reduce the power, thereby reducing the received signal power. Wherein, the received signal includes UE signal and interference signal. Although the power control can guarantee the signal-to-noise ratio of the WCDMA system under certain interference, the periodicity of the interference will still be reflected. It can be seen from this that even for a system with power control characteristics, the embodiment of the present invention can determine whether there is interference according to the characteristics of the received signal.

In addition, because not only periodic interference signals cause signal fluctuations, but also propagation environment and service changes, etc., in order to distinguish periodic interference from signal fluctuations caused by other reasons, it is necessary to perform correlation detection on received signals. If the patterns of the periodic interference are correlated and matched, it can prove the existence of this type of interference, and if they cannot match, it means that the signal fluctuation may be caused by other reasons mentioned above.

In view of the above analysis, the implementation scheme of the interference detection method provided by the embodiment of the present invention corresponds to the following steps:

Step 101. Obtain the short-term power according to the received signal, and thereby obtain a short-term power sequence of the received signal composed of the short-term power of the received signal.

In this step, obtaining the short-term power according to the received signal may specifically include: integrating the short-term power of the received signal to obtain the short-term power.

The duration of the short-term power obtained in this step may be greater than the interference period of the interference signal, or less than half of the interference signal period. For example, for a received signal with a large duty ratio, even if the duration of the short-term power is longer than the period of the interference signal, the embodiment of the present invention can be used to find the interference signal.

Specifically, the duration of the acquired short-term power may also be set to be less than half of the interference period. It may further be set that the duration of the acquired short-term power is less than half of the minimum granularity of the interference signal. The reason for the latter setting is that the time granularity of time-domain interference is generally small, and its time granularity is at the level of 100us. For example, the period of PHS interference is 5ms, and its time slot period is 625us. To ensure that it can be detected Interference at this level of granularity requires that the detection granularity used for detection in the received signal, that is, the sampling period, be less than half the duration of the interference slot, so as to ensure that the interference signal will not be smoothed out by the average value.

And the short-term power integration carried out in this step can specifically be to integrate the I channel and the Q channel of the receiving channel every set number of chips (chips), wherein the set number of chips can pass the period of the interference signal The characteristics are calculated. Here, the periodic characteristics of the interference signal are usually the transmission duration of the interference, the silence duration, and the like.

Specifically, the power integration for the I channel and the Q channel includes: firstly obtain the powers P _I and P _Q of the I channel and the Q channel respectively, and then perform square summation of the two powers P _I and P _Q , and then Take the square root of that sum. The power integral is specifically as the formula $P_i=\sqrt{{\mathrm{<figure-callout\; id="2"\; label="P\; I"\; filenames="A20061016947800151.png"\; state="\{\{state\}\}">P</figure-callout>}}_I^{}+{\mathrm{<figure-callout\; id="2"\; label="P\; Q"\; filenames="A20061016947800151.png"\; state="\{\{state\}\}">P</figure-callout>}}_Q^{}}$ shown. Through this processing, multiple short-term powers of received power can be obtained, and these short-time powers form a sequence.

For the above-mentioned specific value of determining chips, take the WCDMA system, and the duration of the short-term power that needs to be obtained is less than half of the minimum granularity of the interference signal as an example. In the WCDMA system, there are 3.84 Mchips per second, so each chip corresponds to 1 /3.84M=0.26us, for the time slot period of 625us, that is, the transmission duration of 625us, the number of chips of the short-term power should be less than: 312.5/0.26=1202, thus, the number of chips can be specifically set to 512 chips. Therefore, if it is necessary to detect interference with a time slot period of 625us, the power of the I channel and the Q channel of the receiving channel can be integrated every 512chips to obtain multiple short-term powers of the receiving channel. Obviously, if the duration of the obtained short-term power is less than half of the interference period of the interference signal, the number of chips of the short-term power should be less than: 2500/0.26=9615, so a value smaller than this value can be taken as the used The number of chips. If the duration of the obtained short-term power is not limited, it can be calculated with one interference period, for example, the number of chips of the short-term power should be less than 5000/0.26=19230, of course, other calculation methods can also be used to determine the number of chips.

Step 102. Determine the sequence X(n) to be detected according to the short-term power sequence obtained in step 101.

The sequence to be detected determined in this step can be directly the short-term power sequence obtained in step 101, or a certain number of data can be intercepted from the short-term power sequence, and the sequence to be detected can be composed of the intercepted data.

For the case of intercepting a certain number of data, in order to reduce the false triggering caused by the randomness of the signal, a specific value can also be preset, and the number of data intercepted in step 101 needs to be greater than the specific value. Among them, the specific value can be calculated according to the precision range, for example, according to the formula $3\frac{{\mathrm{\&sigma;}}^2}{\sqrt{\mathrm{no}}}<L$ Determine, where σ is the root mean square error of the received signal in the case of no interference, n is the specific value, and L is the set threshold in the case of no interference.

Specifically, for different detection accuracy requirements, the number of data intercepted from the short-term power sequence in the above step 101 is different. For example, if the root mean square error σ of the received signal is 1 without interference, and the threshold is set to 0.1, then according to the formula $3\frac{{\mathrm{\&sigma;}}^2}{\sqrt{\mathrm{no}}}<L$ It is determined that there should be no less than 900 values in the sequence X(n) to be detected. And if the threshold is set to 0.3, then according to the formula $3\frac{{\mathrm{\&sigma;}}^2}{\sqrt{\mathrm{no}}}<L$ It is determined that there should be no less than 100 values in the sequence X(n) to be detected. Since the duty cycle of the interference sequence is different, the data number of the short-term power sequence obtained in the above step 101 is preferably more than 10 times the value of the sequence X(n).

In addition, before determining the sequence to be detected X(n) in step 102 , normalization processing can be performed on each corresponding power value, and then the obtained sequence (n) can be used as the sequence to be detected in step 103 .

And the executed normalization processing may specifically be calculating an average value for each power value, and subtracting the average value from each power value. Therefore, each value in the sequence X(n) to be detected is a power value after subtracting the average value. Therefore, after normalization processing, the mean value x of the sequence X(n) to be detected is 0.

Step 103, use the preset interference correlation sequence to perform correlation detection on the sequence to be detected X(n) determined in step 102, thereby obtaining the detection result sequence, and by comparing each value in the detection result sequence with the preset threshold range to determine whether there is time-division interference corresponding to the interference-related sequence in the received signal.

Before describing in detail the processing of step 103 in a specific embodiment, the received signal and the interference-related sequence are analyzed first.

For the received signal, if there is no interference, it can be considered as a sequence that satisfies the characteristics of white noise, and its distribution satisfies a normal distribution. The mean value of the sequence is x, and the root mean square error is σ. According to the characteristics of white noise, the new sequence formed by extracting some of its values also satisfies the normal distribution.

及( ∞)。Therefore, this step 103 can use the interference-related sequence to intercept n values in the sequence X(n) obtained in step 102, and average the n values. If there is no interference corresponding to the interference-related sequence, the extracted There is a 97.7% probability that the serial mean will fall within its confidence interval, and the confidence interval for this normal signal is ( Of course, if the sequence X(n) is normalized, that is, the mean is subtracted from each value, then the x of the sequence X(n) is 0. However, if there is an interference corresponding to the interference-related sequence, its mean after coherence must fall in another confidence interval different from the above interval, and this confidence interval is called the confidence interval of the interference signal. If the above two confidence intervals do not intersect, the probability of false triggering can be greatly reduced, that is, the probability of misjudging a normal signal as an interference signal can be reduced. Therefore, the confidence interval of the interference signal can be set to (0,

and( ∞).

或小于

则说明有97.7％以上的概率存在干扰。Thus, the sequence X(n) obtained in step 102 is convolved with the interference correlation sequence composed of 0 and 1, and 0 represents no interference, and 1 represents interference. If the interference correlation sequence is aligned with the sequence X(n), then The value obtained by convolution is the value that may be due to the increased emphasis of the received signal due to interference. In this case, if the mean of these values is greater than

or less

It means that there is more than 97.7% probability of interference.

Based on the above analysis, it can be determined that in the above scheme, the interference correlation sequence H(n) must first be preset according to the possible interference characteristics, and the set interference correlation sequence H(n) and the data in the sequence X(n) to be detected The numbers can be the same or different, as long as the setting of 0 and 1 in the interference correlation sequence H(n) corresponds to the interference period of the corresponding interference signal. For example, for the single-channel interference of the PHS base station, the interference-related sequence H(n) includes 0.625ms of 1 and 4.375ms of 0, and for the short-term power of 512chips, within 5ms, that is, 5000us can be Perform 5000/(512×0.26)=37.5 times of interference detection, and in each interference period, that is, 625us, 625/(512×0.26)=4 times of interference detection can be performed. Since the sequence must be an integer, the The sequence can be set to include 75 values. The sequence is specifically: 1, 1, 1, 1, 0, 0, 0 (a total of 34 0s), 1, 1, 1, 1, 0, 0, 0 (a total of 33 0). For PHS4 channel interference, the interference-related sequence H(n) includes 1 of 2.5 ms and 0 of 2.5 ms, so the sequence also includes 75 values, and the sequence can specifically be: 1, 1, 1, 1 (19 1s in total), 0, 0, 0 (19 0s in total), 1, 1, 1, 1 (19 1s in total), 0, 0, 0 (18 0s in total). For other interference, the corresponding interference correlation sequence H(n) can also be determined according to its interference period.

The processing of step 103 then specifically includes:

Step A, gradually shifting the preset interference correlation sequence H(n), convolving the sequence X(n) to be detected obtained in step 102 with each shifted interference correlation sequence, and convolving each convolution The multiple values obtained by the product are averaged, and all the obtained averages form the detection result sequence Y(τ).

Y(τ)＝∑X(n)H(n-τ)

Step B, comparing all values in the detection result sequence Y(τ) with a preset threshold range to determine whether there is time-division interference corresponding to the interference-related sequence in the received signal.

也可以是(0，)及(

∞)。如果是前一种阈值范围，则步骤B在确定检测结果序列中的所有值都在该范围内的值时，即可确定不存在相应的时分干扰；否则，即如果有值不在该范围内时，则确定存在干扰。而如果是后一种阈值范围，则在确定存在落入该范围的值时，即可确定存在相应的时分干扰；如果所有值均不在该范围内，则确定不存在干扰。From the above analysis, we can see that the threshold range can be (

Can also be (0, )and(

∞). If it is the former threshold range, then step B can determine that there is no corresponding time-division interference when all values in the detection result sequence are determined to be within this range; otherwise, that is, if any value is not within this range , it is determined that there is interference. However, if it is the latter threshold range, when it is determined that there are values falling within this range, it can be determined that there is corresponding time-division interference; if all values are not within this range, it is determined that there is no interference.

The embodiment of the present invention also provides a system for implementing interference detection, and the communication device in the system includes the short-term power acquisition module and the interference detection module shown in FIG. 2 . Specifically, the communication device may be a base station, or may be other devices in the system. The device will be described in detail below with reference to FIG. 2 and FIG. 3 .

The embodiment of the interference detection device implementing the above method embodiment is shown in Figure 2, which specifically includes a short-term power acquisition module and an interference detection module, wherein,

The short-term power acquisition module is used to obtain short-term power according to the received signal, use the sequence composed of the short-term power of the received signal as the short-term power sequence, and send the short-term power sequence to the interference detection module;

The interference detection module is used to determine the sequence to be detected according to the received short-term power sequence, use the preset interference correlation sequence to perform correlation detection on the sequence to be detected, and compare each value in the obtained detection result sequence with The preset threshold range is compared to determine whether there is time-division interference corresponding to the interference-related sequence in the received signal.

It can be seen from FIG. 3 that the above-mentioned short-term power acquisition module may specifically include: a short-term power sequence forming module and a short-term power sequence sending module. Specifically, the short-term power sequence forming module can obtain short-term power according to the received signal, and use the short-term power sequence of the received signal as a short-term power sequence, and send it to the Interference detection module.

It can be seen from FIG. 3 that the above-mentioned interference detection module may specifically include: a correlation detection module and an interference judgment module.

Specifically, the correlation detection module is used to determine the sequence to be detected according to the received short-term power sequence, and use the preset interference correlation sequence to perform correlation detection on the sequence to be detected, and convert the obtained detection result sequence Send to the interference judging module.

The interference judging module is used to compare the value in the received detection result sequence with a preset threshold range, and determine whether there is time-division interference corresponding to the interference-related sequence in the received signal.

The short-term power acquisition module in FIG. 2 may acquire the short-term power according to the received signal. Specifically, the short-term power acquisition module acquires the short-term power by integrating the short-term power of the received signal. Of course, if the short-term power acquisition module is composed of a short-term power sequence forming module and a short-term power sequence sending module, this processing is specifically performed by the short-term power sequence forming module.

Moreover, the short-term power integration of the received signal may specifically include: integrating the I channel and the Q channel of the received channel every set number of chips, and the set value of the number of chips is passed by the estimated interference signal The periodic characteristics of are determined. The specific integral processing is as described above, and will not be repeated here.

The short-term power acquisition module, or the short-term power sequence forming module therein, performs short-term power integration on the received signal, specifically, it can be the short-time power whose acquisition duration is less than half of the interference period of the interference signal, or the acquisition duration is less than half of the interference period of the interference signal. The short-term power of half the smallest granularity of the interfering signal.

In addition, the preset interference-related sequence may be specifically determined according to the interference period of the interference signal, and in the sequence, a value corresponding to a period with interference is 1, and a value corresponding to a period without interference is 0.

In the above-mentioned interference detection module, the sequence to be detected is determined according to the received short-term power sequence. Specifically, the received short-term power sequence can be directly used as the sequence to be detected, or multiple data can be intercepted from the short-term power sequence. and take it as the sequence to be detected. And for the second case above, that is, for the processing of intercepting a plurality of data from the short-term power sequence, the number of intercepted data may also be set to be greater than a preset specific value. The calculation method of the specific value is as described above, and will not be repeated here. In addition, if the interference detection module is specifically composed of a correlation detection module and an interference judgment module, the above processing may be specifically performed by the correlation detection module, and the following processes are also performed by the correlation detection module.

In the above interference detection module, when the sequence to be detected is determined according to the short-term power sequence, normalization processing may be performed on the data forming the sequence to be detected, and the processed values form the sequence to be detected.

The correlation detection performed by the above-mentioned interference detection module may be specifically carried out by gradually shifting the interference correlation sequence, and convolving the sequence to be detected with the interference correlation sequence after each shift, and obtaining each convolution The multiple values of are averaged, and all the obtained averages form the detection result sequence.

在此情况下，干扰检测模块则在确定所述检测结果序列中的所有值均在所述阈值范围内时，确定不存在干扰信号；在确定有一个或多个值在所述阈值范围外时，确定存在干扰信号。In addition, as mentioned earlier, the preset threshold range can be: (

In this case, the interference detection module determines that there is no interference signal when determining that all values in the detection result sequence are within the threshold range; when determining that one or more values are outside the threshold range , to determine the presence of interference signals.

)和(

∞)，在此情况下，干扰检测模块则在确定所述检测结果序列中的所有值均不在所述阈值范围内时，确定不存在干扰信号，在确定有一个或多个值在所述阈值范围内时，确定存在干扰信号。The preset threshold range can also be: (0,

)and(

∞), in this case, when the interference detection module determines that all values in the detection result sequence are not within the threshold range, it determines that there is no interference signal, and when it is determined that one or more values are within the threshold When within the range, it is determined that there is an interfering signal.

The above descriptions are only preferred implementation manners of the embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (20)

1. An interference detection method, comprising the steps of:

acquiring short-time power according to the received signal, and acquiring a received signal short-time power sequence consisting of the short-time power of the received signal;

determining a sequence to be detected according to the obtained short-time power sequence;

performing correlation detection on the sequence to be detected by using a preset interference correlation sequence to obtain a detection result sequence;

and comparing the value in the detection result sequence with a preset threshold range to determine whether the received signal has time division interference corresponding to the interference correlation sequence.

2. The method of claim 1, wherein the duration of the short-time power is less than half of an interference period of an interfering signal; or less than half the minimum granularity of the interfering signal.

3. The method of claim 1, wherein the obtaining the short-time power from the received signal is: the short-time power is obtained by integrating the short-time power of the received signal.

4. The method of claim 1, 2 or 3, wherein the obtaining the short-time power from the received signal comprises: the I channel and the Q channel of a receiving channel are integrated every set chip number, and the set value of the chip number is determined by the cycle characteristic of the estimated interference signal.

5. The method of claim 1, wherein the predetermined interference correlation sequence is determined according to an interference period of an interference signal, and a period with interference in the interference correlation sequence corresponds to a value of 1 and a period without interference corresponds to a value of 0.

6. The method of claim 1,

the determining the sequence to be detected according to the obtained short-time power sequence comprises:

directly taking the short-time power sequence as a sequence to be detected;

or,

and intercepting a plurality of data from the acquired short-time power sequence, and taking a sequence formed by the intercepted data as a sequence to be detected.

7. The method of claim 1, wherein the determining the sequence to be detected according to the obtained short-time power sequence comprises: and intercepting a plurality of data in the short-time power sequence, wherein the number of the intercepted data is greater than a preset specific value, and the intercepted data form a sequence to be detected.

8. The method of claim 7, wherein the predetermined specific value is according to a formula <math> <mrow> <mn>3</mn> <mfrac> <msup> <mi>&sigma;</mi> <mn>2</mn> </msup> <msqrt> <mi>n</mi> </msqrt> </mfrac> <mo>&lt;</mo> <mi>L</mi> </mrow> </math> Determining, wherein σ is the root mean square difference of the received signal without interference, and n is the characteristic

And the fixed value L is a threshold value under the set condition of no interference.

9. The method according to any one of claims 1, 2, 3 and 5 to 8, wherein the determining the sequence to be detected according to the obtained short-time power sequence comprises: and carrying out normalization processing on data forming the sequence to be detected, and forming the sequence to be detected by the processed numerical data.

10. The method according to any one of claims 1, 2, 3 and 5 to 8, wherein the performing the correlation detection on the sequence to be detected by using the preset interference correlation sequence comprises: and gradually shifting the interference correlation sequence, convolving the sequence to be detected with the interference correlation sequence shifted each time, averaging a plurality of values obtained by each convolution, and forming a detection result sequence by all obtained average values.

11. The method of any one of claims 1, 2, 3, and 5 to 8,

the preset threshold range is as follows:

wherein x is a short-time power sequence or the mean value of the sequence to be detected, sigma is the corresponding root-mean-square difference, and n is the number of the sequence to be detected;

the step of determining whether the received signal has time division interference corresponding to the interference correlation sequence through comparison is as follows: determining that no interfering signal is present if all values in the sequence of detection results are within the threshold range, and determining that an interfering signal is present if one or more values are outside the threshold range;

or, the preset threshold range is: (0,and (a)Infinity), wherein x is the short-time power sequence or the mean value of the sequence to be detected, sigma is the corresponding root mean square difference, and n is the numerical number of the sequence to be detected;

the step of determining whether the received signal has time division interference corresponding to the interference correlation sequence through comparison is as follows: and if all values in the detection result sequence are not in the threshold range, determining that no interference signal exists, and if one or more values are in the threshold range, determining that the interference signal exists.

12. An apparatus that enables interference detection, the apparatus comprising: a short-time power acquisition module and an interference detection module, wherein,

the short-time power acquisition module is used for acquiring short-time power according to the received signal, taking a sequence formed by the short-time power of the received signal as a short-time power sequence and sending the short-time power sequence to the interference detection module;

the interference detection module is configured to determine a sequence to be detected according to the received short-time power sequence, perform correlation detection on the sequence to be detected by using a preset interference correlation sequence, and determine whether the received signal has time division interference corresponding to the interference correlation sequence by comparing a value in an obtained detection result sequence with a preset threshold range.

13. The apparatus of claim 12, wherein the short-time power harvesting module comprises: a short-time power sequence forming module and a short-time power sequence transmitting module, wherein,

the short-time power sequence forming module is used for obtaining short-time power according to the received signal, taking a sequence formed by the short-time power of the received signal as a short-time power sequence, and sending the short-time power sequence to the interference detection module through the short-time power sequence sending module.

14. The apparatus of claim 13, wherein the short-time power sequence forming module is configured to obtain the short-time power by performing short-time power integration on the received signal.

15. The apparatus of claim 13, wherein the short-time power sequence forming module is configured to obtain the short-time power with a duration less than half of an interference period of the interference signal or obtain the short-time power with a duration less than half of a minimum granularity of the interference signal by performing short-time power integration on the received signal.

16. The apparatus of claim 12, wherein the interference detection module comprises: a correlation detection module and an interference judgment module, wherein,

the correlation detection module is used for determining a sequence to be detected according to the received short-time power sequence, performing correlation detection on the sequence to be detected by using a preset interference correlation sequence, and sending an obtained detection result sequence to the interference judgment module;

and the interference judging module is used for comparing the value in the received detection result sequence with a preset threshold range and determining whether the received signal has time division interference corresponding to the interference related sequence according to the comparison result.

17. The apparatus of claim 16, wherein the correlation detection module is configured to directly use the received short-time power sequence as the sequence to be detected, or intercept a plurality of data from the short-time power sequence and use the data as the sequence to be detected.

18. The apparatus of claim 16, wherein the correlation detection module is further configured to perform normalization processing on data constituting a sequence to be detected, and constitute the processed data into the sequence to be detected.

19. The apparatus of claim 16, wherein the correlation detection module is configured to perform a gradual shift on the interference correlation sequence, convolve the sequence to be detected with the interference correlation sequence after each shift, and average a plurality of values obtained by each convolution, so that all obtained average values form a detection result sequence.

20. The apparatus of claim 16,

the preset threshold range is as follows:

wherein x is a short-time power sequence or the mean value of the sequence to be detected, sigma is the corresponding root-mean-square difference, and n is the number of the sequence to be detected;

the interference judging module is used for determining that no interference signal exists when all values in the detection result sequence are determined to be within the threshold range, and determining that an interference signal exists when one or more values are determined to be outside the threshold range;

the preset threshold range is either: (0,

and (a)Infinity), wherein x is the short-time power sequence or the mean value of the sequence to be detected, sigma is the corresponding root mean square difference, and n is the numerical number of the sequence to be detected;

the interference judging module is configured to determine that no interference signal exists when all values in the detection result sequence are determined to be not within the threshold range, and determine that an interference signal exists when one or more values are determined to be within the threshold range.

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