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基于空域信道跳变抗干扰DOA估计方法

An anti-jamming DOA estimation method with space hopping
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摘要 针对信源与干扰来波方向接近时,传统子空间估计方法 "秩亏"导致DOA失效的问题,通过引入可控的人工跳空信道及跳空图案,使信源在一个码元周期内的等效空域信道动态变化,以加大信源和干扰的信道特征差异,从而有效规避干扰的影响,解决了信源和干扰DOA估计的分辨问题.由于N次跳变可等效地在空域衍生出N对虚拟阵列,因此可成倍扩展虚拟阵列数及子空间维度,提高了DOA估计的分辨性能.仿真结果验证了该算法的有效性. The conventional subspace method cannot accurately estimate the direction of arrival(DOA) of the signal with the presence of a jammer close to it because their combined channel matrix rank is deficient. The paper proposes a novel anti-jamming DOA estimation method by introducing an artificially controllable space-hopping channel and space-hopping pattern. The method causes the equivalent spatial channel of the signal to change dynamically in a symbol cycle, which can promote the channel difference between the jammer and signal source.Therefore, the method can prevent the jammer from influencing the signal, and improve the resolution of the DOA estimation. Because N hops are equivalently regarded as spawning N pairs of virtual arrays in space, the virtual elements and the subspace dimension are greatly increased, which can greatly improve the performance of DOA estimation. The simulation results verify the effectiveness of the algorithm.
作者 郭素霞 李翔宇 金梁 刘璐 季新生 Suxia GUO, Xiangyu LI, Liang JIN, Lu LIU, Xinsheng JI (1. National Digital Switching System Engineering Technology Center, Zhengzhou 450002, China; 2. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China)
出处 《中国科学:信息科学》 CSCD 北大核心 2016年第7期899-912,共14页 Scientia Sinica Informationis
基金 国家自然科学基金(批准号:61471396,61501516,61521003) 国家高技术研究发展计划(863计划)(批准号:2014AA01A704) 军内科研项目(批准号:20140128) 东南大学移动通信国家重点实验室开放研究基金资助课题(课题编号:2013D09)资助项目
关键词 抗干扰 DOA估计 空域跳变 跳空图案 虚拟阵列 anti-jamming DOA space hopping space hopping pattern virtual array
作者简介 Suxia GUO was born in 1976. She re- ceived the B.E. and M.S. degrees from the PLA Information Engineering Uni- versity, Zhengzhou, China, respectively, in 1995 and 2002. She is a research asso- ciate of China National Digital Switch- ing System Engineering &= Technologi- cal R&=D Center (NDSC). Her research interests mainly focus on wireless corn-munications, physical layer security, and security. Xiangyu LI was born in 1987. He received his B.S. degree in 2008 from Peking University and his M.S. de- gree in 2012 from the National Dig- ital Switching System Engineering Technological Research Center (NDSC). Currently, he is a Ph.D. student at the NDSC, Zhengzhou, China. His re- search interests mainly focus on wire- less communications, physical layer se- curity, and cooperative networks. 通信作者.E—mail:liangjin@263.net Liang JIN was born in 1969. He received the Ph.D. degree from Xi'an Jiaotong University, Xi'an, in 1999. Currently, he is a professor at the Na- tional Digital Switching System Engi- neering Technological Research Cen- ter (NDSC). His research interests in- clude ultra-wideband wireless commu- nication, physical layer security, and smart antennas. Lu LIU received the B.S. degree in elec- trical engineering from Tsinghua Uni- versity, Beijing, China, in 2010, the M.S. degree in electrical engineering from the PLA Information Engineering University, Zhengzhou, in 2013. Cur- rently, he is a Ph.D. candidate and his research interests include physical layer security and compressive sensing.
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参考文献18

  • 1Kazemitabar S J. Coping with Interference in Wireless Networks. New York: Springer, 2010. 132-175. 被引量:1
  • 2尤肖虎,潘志文,高西奇,曹淑敏,邬贺铨.5G移动通信发展趋势与若干关键技术[J].中国科学:信息科学,2014(5):551-563. 被引量:389
  • 3Schmidt R O. Multiple emitter location and signal parameter estimation. IEEE Trans Antenn Propag, 1986, 34: 276-280. 被引量:1
  • 4Zhou C, Haber F, Jaggard, et al. A resolution measure for the MUSIC algorithm and its application to plane wave arrivals contaminated by coherent interference. IEEE Trans Signal Process, 1992, 39:454-463. 被引量:1
  • 5Roy R, Paulraj A, Kailath T. ESPRIT a subspace rotation approach to estimation of parameters of Cisoids in noise. IEEE Trans ASSP, 1986, 34:1340-1344. 被引量:1
  • 6Roy R, Kailath T. ESPRIT -- estimation of signal parameters via rotational invariance techniques. IEEE Trans ASSP, 1989. 37:984-995. 被引量:1
  • 7殷勤业,邹理和,robert w.newcomb.一种高分辨率二维信呈参量估计方法——波达方向矩阵法[J].通信学报,1991,12(4):1-7. 被引量:140
  • 8金梁,殷勤业.时空DOA矩阵方法[J].电子学报,2000,28(6):8-12. 被引量:72
  • 9[杨正权,李思敏,吕家祥.基于时空处理的阵列扩展及同频干扰矩阵方法.电子学报,2000,28:8-12. 被引量:1
  • 10Porat B, Friedlander B. Direction finding algorithms based on high-order statistics. IEEE Trans Signal Process, 1991, 39:2016-2023. 被引量:1

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