参考信号耦合有用信号对干扰对消系统的影响及其抑制

doi:10.11959/j.issn.1000-436x.2015205

通信学报 ›› 2015, Vol. 36 ›› Issue (9): 98-108.doi: 10.11959/j.issn.1000-436x.2015205

参考信号耦合有用信号对干扰对消系统的影响及其抑制

蒋云昊^1,²,赵治华³

¹ 湖北工业大学太阳能高效利用湖北省协同创新中心，湖北武汉 430068
² 湖北工业大学电气与电子工程学院，湖北武汉 430068
³ 海军工程大学舰船综合电力技术国防科技重点实验室，湖北武汉 430033

出版日期:2015-09-25 发布日期:2017-09-15
基金资助:
太阳能高效利用湖北省协同创新中心开放基金资助项目;湖北工业大学高层次人才基金资助项目

Influence and its suppression of desired signal coupling to reference signal to interference cancellation system

Yun-hao JIANG^1,²,Zhi-hua ZHAO³

¹ Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy,Hubei University of Technology,Wuhan 430068,China
² School of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan 430068,China
³ National Key Laboratory for Vessel Integrated Power System Technology,Naval University of Engineering,Wuhan 430033,China

Online:2015-09-25 Published:2017-09-15
Supported by:
Open Foundation of Hubei Collaborative Innovation Center for High-efficient Utilization of Solar Energy;High Level Talent Foundation of Hubei University of Technology

摘要/Abstract

摘要：

分析了参考信号耦合有用信号时，实际自适应干扰对消系统的时域特性。分析表明，参考信号含有用信号导致系统时变，改变系统的最佳权值，使系统的干扰对消效果下降，并对有用信号的接收产生影响。根据实际共平台通信系统的收发耦合特性，从时域角度分析得到系统干扰对消比和有用对消比的计算表达式，并得到干扰对消比和有用对消比随相对时延相位变化的规律。提出一种时延匹配方法，通过匹配参考信号提取点至正交功分器输出与接收天线至合成信号注入点间的时延，可以有效抑制参考信号耦合有用信号导致干扰对消效果下降的问题。仿真结果表明，所提出的时延匹配方法能消除有用信号对干扰对消比的影响，还能提高干扰对消效果。

关键词: 通信理论, 干扰对消系统, 有用信号, 时延匹配, 干扰对消比, 有用对消比

Abstract:

The time-domain characteristics of adaptive interference cancellation system with desired signal coupling to reference signal were analyzed.The analyses reveal the desired signal makes the system a time-variation system and the optimal weights were changed,which made the performance of cancellation system decreased and infulence the reception of the desired signal.According to the coupling characteristics of common platform communication system,the formulas of (ICR) interference cancellation ratio and (DCR) desired cancellation ratio were gained in time-domain.The law of ICR and DCR varying with relative delay phase was got.The method of delay time matching was brought forward.Through matching the delay time of the extraction point of the reference signal to the output of the orthogonal divider and the receiv-ing antenna to the injection point of the synthetic signal could suppress the decrease of ICR for the reference signal coupling desired signal.The simulation results reveal that the delay time matching can not only prevent the decrease of ICR for de-sired signal in reference signal but also improve the performance of cancellation system.

Key words: communication theory, interference cancellation system, desired signal, delay time matching, interference cancellation ratio, desire cancellation ratio

蒋云昊,赵治华. 参考信号耦合有用信号对干扰对消系统的影响及其抑制[J]. 通信学报, 2015, 36(9): 98-108.

Yun-hao JIANG,Zhi-hua ZHAO. Influence and its suppression of desired signal coupling to reference signal to interference cancellation system[J]. Journal on Communications, 2015, 36(9): 98-108.

图/表 8

图1

图2

图3

图4

图5

图7

图8

表1

各参数对应的ICR和DCR仿真结果"

E_d/V	α,β		ICR/dB	DCR/dB
0	α=0,β=0		60	0
＞0	α=0.01 β=0.004	η=π	51.7	?0.08
		$η = \frac{π}{2}$	54.5	0
		$η = \frac{π}{25}$	64.4	0.08
		η=0	64.7	0.08
	α=0.01 β=0.003 2	$η = \frac{π}{25}$	77.8	0.08
	α=0.01 β=0.003 2	η=0	Inf	0.08

表1

参考文献 12

[1]	WIDROW B , GLOVER J R , MCCOOL J M . Adaptive noise cancel-ling:principles and applications[J]. Proceedings of the IEEE, 1975,63(12): 1692-1716.
[2]	GLOVER J R . Adaptive noise canceling applied to sinusoidal inter-ferences[J]. IEEE Transactions on Acoustics,Speech,and Signal Processing, 1977,25(6): 484-491.
[3]	TOBIAS O J , SEARA R . On the LMS algorithm with constant and variable leakage factor in a nonlinear environment[J]. IEEE Transac-tions on Signal Processing, 2006,54(9): 3448-3458.
[4]	AKHTAR M T , ABE M , KAWAMATA M . A new variable step size LMS algorithm-based method for improved online secondary pathmodeling in active noise control systems[J]. IEEE Transactions on Audio,Speech,and Language processing, 2006,14(2): 720-726.
[5]	DAS D P , PANDA G , KUO S M . New block filtered-X LMS algo-rithms for active noise control systems[J]. IET Signal Processing, 2007,1(2): 73-81.
[6]	MUHAMMAD T A , MASAHIDE A , MASAYUKI K . A new variable step size LMS algorithm-based method for improved online secondary path modeling in active noise control systems[J]. IEEE Transactions on Acoustics,Speech,and Signal Processing, 2007,14(2): 720-726.
[7]	杜武林 . 干扰抵消技术的原理和应用. 电信科学, 1988(5):51-55. DU W L . Principle and application of interference cancellation tech-nology[J]. Telecom Science, 1988(5):51-55.
[8]	郑伟强，杜武林 . 自适应干扰抵消研究[J]. 电讯技术, 1991,31(6): 20-27. ZHENG W Q , DU W L . Study of adaptive interference canceling[J]. Telecommunication Engineeting, 1991,31(6): 20-27.
[9]	马义广，杜武林 . 自适应干扰抵消系统的性能分析与设计[J]. 西安电子科技大学学报，, 1992,19(1): 84-92. MA Y G , DU W L . Performance analysis and design of adaptive interfer-ence canceling system[J]. Journal of Xi'dian University, 1992,19(1): 84-92.
[10]	GERMAN F , ANNAMALAI K , YOUNG M , et al. Simulation and data management for cosite interference prediction[A]. Electromag-netic Compatibility (EMC),IEEE International Symposium on[C]. 2010.869-874.
[11]	JIANG Y H , MA W M , ZHAO Z H . Influence of non quadrature of phase shifter to adaptive interference cancellation system[A]. Proceed-ings of the International Conference on Intelligent Human-Machine Sys-tems and Cybernetics[C]. Piscataway,USA, 2009.359-363.
[12]	蒋云昊，马伟明，赵治华 . 斩波稳零下自适应干扰对消系统的性能分析[J]. 通信学报， 2010,31(3): 65-74. JIANG Y H , MA W M , ZHAO Z H . Analysis of chopping stabilizing zero for adaptive interference cancellation system[J]. Journal on Communications, 2010,31(3): 65-74.

参考信号耦合有用信号对干扰对消系统的影响及其抑制

Influence and its suppression of desired signal coupling to reference signal to interference cancellation system

在线阅读

PDF下载

可视化

被引次数

摘要/Abstract

引用本文

使用本文

图/表 8

参考文献 12

相关文章 5

Metrics

推荐阅读 0

[1]	蒋云昊,赵楠,刘聪,丁稳房,席自强. 共址天线干扰抵消系统的调幅制干扰抵消特性[J]. 通信学报, 2018, 39(10): 34-42.
[2]	蒋云昊,陈炜峰,钟水明,贾红云,曹永娟,毛鹏. 干扰对消系统的非零带宽性能与延时匹配[J]. 通信学报, 2014, 35(7): 113-121.
[3]	蒋云昊，陈炜峰，钟水明，贾红云，曹永娟，毛鹏. 干扰对消系统的非零带宽性能与延时匹配[J]. 通信学报, 2014, 35(7): 14-121.
[4]	李文禄,赵治华,李毅,唐健,肖欢. 含有用信号的自适应干扰对消系统时域分析[J]. 通信学报, 2012, 33(10): 183-190.
[5]	蒋云昊,马伟明,赵治华. 斩波稳零下自适应干扰对消系统的性能分析[J]. 通信学报, 2010, 31(3): 65-74.