CN103095316A - Self-adaption interference rejection method and device thereof - Google Patents
Self-adaption interference rejection method and device thereof Download PDFInfo
- Publication number
- CN103095316A CN103095316A CN2011103314878A CN201110331487A CN103095316A CN 103095316 A CN103095316 A CN 103095316A CN 2011103314878 A CN2011103314878 A CN 2011103314878A CN 201110331487 A CN201110331487 A CN 201110331487A CN 103095316 A CN103095316 A CN 103095316A
- Authority
- CN
- China
- Prior art keywords
- interference
- signal
- power
- discernible
- maximum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Noise Elimination (AREA)
Abstract
The invention provides a self-adaption interference rejection method which includes steps: analyzing received signals, and obtaining total power of the received signals and power of identifiable interference signals; counting the number of the identifiable interference signals and obtaining the largest interference signal power in identifiable interference signal power; computing interference element factors; and judging whether the interference element factors are larger than preset first threshold values, if yes, adopting an interference offset merging algorithm for interference rejection, if not, adopting a maximal-ratio combining algorithm for the interference rejection. The invention further provides a self-adaption interference rejection device which can improve interference resistance and quality of chain signals.
Description
Technical field
The present invention relates to mobile communication signal receiver control field, be specifically related to self-adapting interference suppression method and device.
Background technology
In mobile communication system, multipath fading, time delay expansion, interference and thermal noise are the key factors of restriction system performance.For the Ruide decline that anti-multipath is produced, receiver adopts the multi-antenna receive diversity technology usually, and namely receiver merges according to certain mode, to improve the signal to noise ratio of restituted signal.When having interference, there is correlation in the noise component(s) of each passage.Need to suppress interference signal, to guarantee the link communication quality.
The inhibition method that adopts at present is: adopt Interference Cancellation to merge (Interference RejectionCombining, IRC) and disturb inhibition; Perhaps, adopt high specific merge algorithm MRC algorithm to disturb inhibition.
By the research to above-mentioned prior art, the present inventor finds that prior art has following deficiency: because being applicable to property of IRC method is made an uproar than in low situation, namely the dominant interference signal accounts in leading situation; And maximum the merging makes an uproar than in high situation than being applicable to property of algorithm MRC, and namely the dominant interference signal does not account in leading situation; Due to the uncertainty of wireless environment, the interference that simple IRC method or MRC algorithm not can solve receiver suppresses, and affects antijamming capability and the link-quality of system.
Summary of the invention
The present invention proposes self-adapting interference suppression method, can improve the receiver antijamming capability, improves link-quality.
For achieving the above object, the present invention proposes self-adapting interference suppression method, comprises step:
The signal that receives is analyzed, obtained receiving the power of gross power and the discernible interference signal of signal;
Add up the number of discernible interference signal and obtain interfering signal power maximum in the power of described discernible interference signal;
According to the interfering signal power of described gross power, described maximum and the number of interference signal, calculate the interference component factor, the ratio of the interfering signal power that the described interference component factor is described maximum and other interference powers and noise power sum;
Judge that the described interference component factor whether less than the first default threshold value, if not, adopts the Interference Cancellation merge algorithm to disturb inhibition; If adopt the high specific merge algorithm to disturb inhibition.
In disturbance restraining method of the present invention, the signal that receives is carried out constituent analysis, obtain receiving total power signal and discernible interfering signal power, and then obtain unrecognizable signal power; Add up discernible interference signal; Obtain the interference signal identified of maximum power; Then carrying out the interference component factor calculates, with the interference component factor that calculates and the first threshold value of presetting relatively, come choice for use Interference Cancellation merge algorithm IRC to disturb inhibition according to comparative result, or use maximum the merging to disturb inhibition than MRC algorithm; In the time of in being in unsettled wireless environment, can disturb inhibition by the suitable disturbance restraining method of adaptive selection, improve the antijamming capability of system, improve the signal quality of link.
The present invention also proposes the adaptive disturbance restraining device, can improve the receiver antijamming capability, improves link-quality.
For achieving the above object, the present invention proposes the adaptive disturbance restraining device, comprising:
Analytic unit is analyzed the signal that receives, and obtains receiving the power of gross power and the discernible interference signal of signal;
Statistic unit, the number of the discernible interference signal of statistics;
Acquiring unit obtains interfering signal power maximum in the power of described discernible interference signal;
The first computing unit, according to the interfering signal power of described gross power, described maximum and the number of interference signal, calculate the interference component factor, the ratio of the interfering signal power that the described interference component factor is described maximum and other interference powers and noise power sum;
Whether judging unit judges the described interference component factor less than the first default threshold value, if not, disturbs to first and suppresses unit transmission the first operation signal; If disturb to second and suppress unit transmission the second operation signal;
Described the first interference suppresses the unit, after receiving described the first operation signal, adopts the Interference Cancellation merge algorithm to disturb inhibition;
Described the second interference suppresses the unit, after receiving described the second operation signal, adopts the high specific merge algorithm to disturb inhibition.
In interference suppression equipment of the present invention, the signal that receives is carried out constituent analysis, obtain receiving total power signal and discernible interfering signal power, and then obtain unrecognizable signal power; Add up discernible interference signal; Obtain the interference signal identified of maximum power; Then carrying out the interference component factor calculates, with the interference component factor that calculates and the first threshold value of presetting relatively, come choice for use Interference Cancellation merge algorithm IRC to disturb inhibition according to comparative result, or use maximum the merging to disturb inhibition than MRC algorithm; In the time of in being in unsettled wireless environment, can disturb inhibition by the suitable disturbance restraining method of adaptive selection, improve the antijamming capability of system, improve the signal quality of link.
Description of drawings
Fig. 1 is a flow chart of disturbance restraining method of the present invention;
Fig. 2 is a structural representation of interference suppression equipment of the present invention;
Fig. 3 is another structural representation of interference suppression equipment of the present invention.
Embodiment
For ease of understanding the present invention, set forth below in conjunction with accompanying drawing.
Please refer to Fig. 1, the present invention proposes self-adapting interference suppression method, comprise step:
101, analyze power and the discernible interfering signal power that receives signal;
The signal that receives is analyzed, obtained receiving the power of gross power and the discernible interference signal of signal.Wherein, discernible interference signal refers to go out by the instrument direct-detection signal of power.
102, the discernible interference signal number of statistics and obtain the maximum interfering signal power identified;
Add up the number of discernible interference signal and obtain interfering signal power maximum in the power of discernible interference signal.
103, calculate the interference component factor;
According to gross power, the interfering signal power of maximum and the number of interference signal, calculate the interference component factor, the interference component factor is the interfering signal power of described maximum and the ratio of other interference powers and noise power sum.Other interference powers refer to identify the signal power of removing this maximum interfering signal power in power.
104, become molecular group whether less than the first default thresholding;
Judge that whether the interference component factor is less than the first default threshold value, if carry out step 105; If not, carry out step 106.
105, utilize maximum the merging to disturb inhibition than algorithm;
106, adopt the Interference Cancellation merge algorithm to disturb inhibition.
In disturbance restraining method of the present invention, the signal that receives is carried out constituent analysis, obtain receiving total power signal and discernible interfering signal power, and then obtain unrecognizable signal power; Add up discernible interference signal; Obtain the interference signal identified of maximum power; Then carrying out the interference component factor calculates, with the interference component factor that calculates and the first threshold value of presetting relatively, come choice for use Interference Cancellation merge algorithm IRC to disturb inhibition according to comparative result, or use maximum the merging to disturb inhibition than MRC algorithm; In the time of in being in unsettled wireless environment, can disturb inhibition by the suitable disturbance restraining method of adaptive selection, improve the antijamming capability of system, improve the signal quality of link.
Wherein, 103 steps are specially:
Utilize formula:
Calculate the interference component factor;
Wherein, DIR is the interference component factor, P
mBe the interfering signal power of maximum, N deducts the difference of the power sum of discernible interference signal for the gross power that receives signal; K is the number of discernible interference signal, P
kDo not comprise described P
m
For adapting to more flexibly wireless environment, above-mentioned the first default threshold value comprises: 2 or 4 or 8.The signal to noise ratio of signal is large, and the first default threshold value value is little; Signal to noise ratio is little, and the first default threshold value value is large.Concrete value step: according to the power calculation signal to noise ratio of gross power and discernible interference signal, whether judge signal to noise ratio greater than the second default threshold value, if the value of the first default threshold value is 2; If not, the value of the first default threshold value is 8.
Wherein, the step of obtaining interfering signal power maximum in the power of discernible interference signal in step 102 is specially:
The power of discernible interference signal is sorted from big to small;
Obtain maximum interfering signal power.
Obtain the power of maximum discernible interference signal, can also realize with additive method, for example power is sorted from small to large.
Then introduce the adaptive disturbance restraining device of proposition of the present invention, please refer to Fig. 2, comprising:
Analytic unit T1 analyzes the signal that receives, and obtains receiving the power of gross power and the discernible interference signal of signal;
Statistic unit T2, the number of the discernible interference signal of statistics;
Acquiring unit T3 obtains interfering signal power maximum in the power of discernible interference signal;
The first computing unit T4 according to gross power, the interfering signal power of maximum and the number of interference signal, calculates the interference component factor, and the interference component factor is the interfering signal power of described maximum and the ratio of other interference powers and noise power sum;
Whether judging unit T5 judges the interference component factor less than the first default threshold value, if not, disturbs to first and suppresses unit transmission the first operation signal; If disturb to second and suppress unit transmission the second operation signal;
First disturbs inhibition unit T6, after receiving the first operation signal, adopts the Interference Cancellation merge algorithm to disturb inhibition;
Second disturbs inhibition unit T7, after receiving the second operation signal, adopts the high specific merge algorithm to disturb inhibition.
In interference suppression equipment of the present invention, the signal that receives is carried out constituent analysis, obtain receiving total power signal and discernible interfering signal power, and then obtain unrecognizable signal power; Add up discernible interference signal; Obtain the interference signal identified of maximum power; Then carrying out the interference component factor calculates, with the interference component factor that calculates and the first threshold value of presetting relatively, come choice for use Interference Cancellation merge algorithm IRC to disturb inhibition according to comparative result, or use maximum the merging to disturb inhibition than MRC algorithm; In the time of in being in unsettled wireless environment, can disturb inhibition by the suitable disturbance restraining method of adaptive selection, improve the antijamming capability of system, improve the signal quality of link.
Wherein, when the first computing unit T4 calculates,
Utilize formula:
Calculate the interference component factor;
Wherein, DIR is the interference component factor, P
mBe the interfering signal power of maximum, N deducts the difference of the power sum of discernible interference signal for the gross power that receives signal; K is the number of discernible interference signal, P
kDo not comprise described P
m
Please refer to Fig. 3, for adapting to more flexibly wireless environment, Fig. 2 embodiment is improved: increase by the second computing unit T8, power calculation signal to noise ratio according to gross power and discernible interference signal, judge that whether signal to noise ratio is greater than the second default threshold value, if the value of the first default threshold value is 2; If not, the value of the first default threshold value is 8.The property of signal is made an uproar than greatly, and the first default threshold value value is little; Signal to noise ratio is little, and the first default threshold value value is large.
Wherein, acquiring unit T3 obtains the concrete operations of interfering signal power maximum in the power of discernible interference signal and is: the power of discernible interference signal is sorted from big to small; Obtain maximum interfering signal power.
Except said method, can adopt additive method, general principle is to calculate the maximum accounting of interfering signal power in the signal power composition, this accounting reaches certain thresholding, can be used for distinguishing the separation of two kinds of algorithms.Another realization, the ratio of maximum interference power and total received power substitutes the above-mentioned interference component factor.
Above-described embodiment of the present invention does not consist of the restriction to protection range of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection range of the present invention.
Claims (8)
1. self-adapting interference suppression method, is characterized in that, comprises step:
The signal that receives is analyzed, obtained receiving the power of gross power and the discernible interference signal of signal;
Add up the number of discernible interference signal and obtain interfering signal power maximum in the power of described discernible interference signal;
According to the interfering signal power of described gross power, described maximum and the number of interference signal, calculate the interference component factor, the ratio of the interfering signal power that the described interference component factor is described maximum and other interference powers and noise power sum;
Judge that the described interference component factor whether less than the first default threshold value, if not, adopts the Interference Cancellation merge algorithm to disturb inhibition; If adopt the high specific merge algorithm to disturb inhibition.
2. self-adapting interference suppression method according to claim 1, is characterized in that,
Described according to the interfering signal power of gross power, described maximum and the number of interference signal, the step of calculating the interference component factor is specially: utilize formula:
Calculate the interference component factor;
Wherein, DIR is the interference component factor, P
mBe the interfering signal power of described maximum, N is the difference that the gross power of described reception signal deducts the power sum of discernible interference signal; K is the number of discernible interference signal, P
kDo not comprise described P
m
3. self-adapting interference suppression method according to claim 1, is characterized in that,
According to the power calculation signal to noise ratio of described gross power and described discernible interference signal, judge described signal to noise ratio whether greater than the second default threshold value, if the value of described default the first threshold value is 2; If not, the value of described default the first threshold value is 8.
4. the described self-adapting interference suppression method of according to claim 1 to 3 any one, is characterized in that, the described step of obtaining interfering signal power maximum in the power of discernible interference signal is specially:
The power of described discernible interference signal is sorted from big to small;
Obtain maximum interfering signal power.
5. the adaptive disturbance restraining device, is characterized in that, comprising:
Analytic unit is analyzed the signal that receives, and obtains receiving the power of gross power and the discernible interference signal of signal;
Statistic unit, the number of the discernible interference signal of statistics;
Acquiring unit obtains interfering signal power maximum in the power of described discernible interference signal;
The first computing unit according to the interfering signal power of described gross power, described maximum and the number of interference signal, calculates the interference component factor;
Whether judging unit judges the described interference component factor less than the first default threshold value, if not, disturbs to first and suppresses unit transmission the first operation signal; If disturb to second and suppress unit transmission the second operation signal;
Described the first interference suppresses the unit, after receiving described the first operation signal, adopts the Interference Cancellation merge algorithm to disturb inhibition;
Described the second interference suppresses the unit, after receiving described the second operation signal, adopts the high specific merge algorithm to disturb inhibition.
6. adaptive disturbance restraining device according to claim 5, is characterized in that,
The concrete operations of described the first computing unit are: utilize formula:
Calculate the interference component factor, the ratio of the interfering signal power that the described interference component factor is described maximum and other interference powers and noise power sum;
Wherein, DIR is the interference component factor, P
mBe the interfering signal power of described maximum, N is the difference that the gross power of described reception signal deducts the power sum of discernible interference signal; K is the number of discernible interference signal, P
kDo not comprise described P
m
7. adaptive disturbance restraining device according to claim 5, is characterized in that,
Described adaptive disturbance restraining device also comprises: the second computing unit, power calculation signal to noise ratio according to described gross power and described discernible interference signal, judge described signal to noise ratio whether greater than the second default threshold value, if the value of described default the first threshold value is 2; If not, the value of described default the first threshold value is 8.
8. the described adaptive disturbance restraining device of according to claim 5 to 7 any one, is characterized in that,
Described acquiring unit sorts from big to small by the power with described discernible interference signal; Obtain maximum interfering signal power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103314878A CN103095316A (en) | 2011-10-27 | 2011-10-27 | Self-adaption interference rejection method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103314878A CN103095316A (en) | 2011-10-27 | 2011-10-27 | Self-adaption interference rejection method and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103095316A true CN103095316A (en) | 2013-05-08 |
Family
ID=48207519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103314878A Pending CN103095316A (en) | 2011-10-27 | 2011-10-27 | Self-adaption interference rejection method and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103095316A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731168A (en) * | 2013-12-06 | 2014-04-16 | 南京智达康无线通信科技股份有限公司 | Method for improving 1M receiving flexibility |
| CN104618056A (en) * | 2014-12-31 | 2015-05-13 | 电子科技大学 | Method for inhibiting interference under obviously-fluctuation channel condition |
| CN105207721A (en) * | 2014-06-19 | 2015-12-30 | 中兴通讯股份有限公司 | Optical signal detection and demodulation device and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263653A (en) * | 1997-05-21 | 2000-08-16 | 艾利森电话股份有限公司 | Selective diversity combining |
| US20070263744A1 (en) * | 2006-05-09 | 2007-11-15 | Cingular Wireless Ii, Llc | Systems and methods for interference cancellation in a multiple antenna radio receiver system |
| CN101282566A (en) * | 2007-04-03 | 2008-10-08 | 中兴通讯股份有限公司 | Interference suppression method |
| CN102014507A (en) * | 2009-09-04 | 2011-04-13 | 普天信息技术研究院有限公司 | User uplink resource scheduling method in HSUPA system |
-
2011
- 2011-10-27 CN CN2011103314878A patent/CN103095316A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263653A (en) * | 1997-05-21 | 2000-08-16 | 艾利森电话股份有限公司 | Selective diversity combining |
| US20070263744A1 (en) * | 2006-05-09 | 2007-11-15 | Cingular Wireless Ii, Llc | Systems and methods for interference cancellation in a multiple antenna radio receiver system |
| CN101282566A (en) * | 2007-04-03 | 2008-10-08 | 中兴通讯股份有限公司 | Interference suppression method |
| CN102014507A (en) * | 2009-09-04 | 2011-04-13 | 普天信息技术研究院有限公司 | User uplink resource scheduling method in HSUPA system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731168A (en) * | 2013-12-06 | 2014-04-16 | 南京智达康无线通信科技股份有限公司 | Method for improving 1M receiving flexibility |
| CN105207721A (en) * | 2014-06-19 | 2015-12-30 | 中兴通讯股份有限公司 | Optical signal detection and demodulation device and system |
| CN104618056A (en) * | 2014-12-31 | 2015-05-13 | 电子科技大学 | Method for inhibiting interference under obviously-fluctuation channel condition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Herath et al. | Energy detection of unknown signals in fading and diversity reception | |
| US7822385B2 (en) | Adjacent channel interference supression | |
| CN101316115B (en) | Detection method, equipment and system of pilot frequency sequence signal | |
| CN101507151B (en) | Method, device and computer program for classifying a received signal | |
| CN104467938B (en) | Selection diversity receives the method and system of merging patterns | |
| CN103384174B (en) | Multi-user multi-antenna collaborative spectrum sensing detection probability optimization method | |
| CN102571240A (en) | Cooperative spectrum sensing parameter optimizing method utilizing improved energy detector | |
| CN106713190B (en) | MIMO transmitting antenna number blind estimation calculation method based on random matrix theory and characteristic threshold estimation | |
| CN101951274A (en) | Cooperative spectrum sensing method of low complexity | |
| CN103795479A (en) | Cooperative spectrum sensing method based on characteristic values | |
| JP2006518164A5 (en) | ||
| RU2005129096A (en) | COMMUNICATED RADIO RECEIVER WITH ADAPTIVE COMPENSATOR LENGTH | |
| CN104821837A (en) | Frequency hopping anti-interference system for MF-TDMA system | |
| CN101192846B (en) | A self-adapted method for setting protection interval of overlapping cutting method | |
| CN103973382B (en) | Based on the frequency spectrum detecting method of limited random matrix | |
| Niranjayan et al. | The BER optimal linear rake receiver for signal detection in symmetric alpha-stable noise | |
| Niranjayan et al. | BER optimal linear combiner for signal detection in symmetric alpha-stable noise: small values of alpha | |
| CN107276696A (en) | Signal detection algorithm under a kind of Low SNR | |
| EP2981012B1 (en) | User device and user allocation information estimation method | |
| CN103095316A (en) | Self-adaption interference rejection method and device thereof | |
| Singh et al. | Threshold optimization of a finite sample-based cognitive radio network using energy detector | |
| CN101072046B (en) | Multi-path selecting method and receiver | |
| US8369810B2 (en) | Interference variance estimation for signal detection | |
| CN103138856B (en) | A kind of method and device detecting interference | |
| EP1585245B1 (en) | Estimation method for noise space correlated characteristics in time slot cdma system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130508 |