抗部分频带干扰的交织跳扩系统设计及其容量分析

删除或更新信息，请邮件至freekaoyan#163.com(#换成@)

清华大学辅仁网/2017-07-07

任印鹏¹, 倪祖耀², 匡麟玲³, 吴胜³, 陆建华^1,3

1. 清华大学电子工程系, 北京 100084;
2. 清华大学信息技术研究院, 北京 100084;
3. 清华大学宇航技术研究中心, 北京 100084

Anti partial-band noise jamming interleaved hybrid spread spectrum system design and capacity analysis

REN Yinpeng¹, NI Zuyao², KUANG Linling³, WU Sheng³, LU Jianhua^1,3

1. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China;
2. Research Institute of Information Technology, Tsinghua University, Beijing 100084, China;
3. Tsinghua Space Center, Tsinghua University, Beijing 100084, China

摘要:

输出: BibTeX | EndNote (RIS)

摘要为提高抗部分频带干扰的能力, 在直接跳扩(DS/FH)的基础上提出一种交织跳扩(IDS/FH)系统, 引入多跳间交织器实现码片的离散化, 获得时频分集增益。通过将部分频带干扰下的跳扩系统等效为衰落条件下的单输入多输出(SIMO)系统, 分别对DS/FH和IDS/FH的信道容量进行分析, 得出部分频带干扰和高斯信道下的容量表达式, 并给出了IDS/FH在部分频带干扰下的最佳接收方案。理论分析得出, 在50%的强部分频带干扰, 信噪比为10 dB的Gauss信道下, IDS/FH的容量比DS/FH的提高49%。仿真结果表明: 50%部分频带干扰下IDS/FH可达到的最低误码率比DS/FH的降低2个数量级。

关键词 ：跳扩技术,部分频带干扰,单输入多输出系统,交织,信道容量

Abstract：Anti partial-band noise jamming (PBNJ) is improved by an interleaved direct sequence/frequency-hopping (IDS/FH) system based on the traditional direct sequence/frequency-hopping (DS/FH) spread spectrum method. An interleaver crossing multiple hops improves the time-frequency diversity gain. The system capacities with PBNJ are compared to a single-input multiple-output (SIMO) system with additive Gaussian white noise (AWGN) in a fading environment. An optimum IDS/FH receiver is also given. Theoretical analyses indicate that, when the PBNJ occupies 50% of the entire frequency band and the SNR is 10 dB, the IDS/FH capacity is 49% higher than that of DS/FH. Simulations show that the achievable lowest bit error rate of IDS/FH is two orders of magnitude lower than that of DS/FH with 50% PBNJ.

Key words：direct sequence/frequency hopping partial-band noise jamming single-input multiple-output system interleave channel capacity

收稿日期: 2014-12-05 出版日期: 2015-09-30

ZTFLH:

TN914.43

通讯作者:匡麟玲,副研究员,E-mail:kll@tsinghua.edu.cnE-mail: kll@tsinghua.edu.cn

引用本文:

任印鹏, 倪祖耀, 匡麟玲, 吴胜, 陆建华. 抗部分频带干扰的交织跳扩系统设计及其容量分析[J]. 清华大学学报（自然科学版）, 2015, 55(8): 866-872.
REN Yinpeng, NI Zuyao, KUANG Linling, WU Sheng, LU Jianhua. Anti partial-band noise jamming interleaved hybrid spread spectrum system design and capacity analysis. Journal of Tsinghua University(Science and Technology), 2015, 55(8): 866-872.

链接本文:

http://jst.tsinghuajournals.com/CN/或 http://jst.tsinghuajournals.com/CN/Y2015/V55/I8/866

图表:

图1　两种跳扩频技术系统框图

图2　三种跳扩频技术波形示意图

图3　强部分频带干扰下理论容量

图4　不同交织器长度下部分频带干扰下容量

图5　BPSK 调制,在不同λ 下的信道容量

图6　BPSK 调制无编码在部分带干扰下的误码性能

图7　BPSK 调制Turbo码在部分带干扰下的误码性能

参考文献:

[1] 杨光, 周经纶, 罗鹏程. JTIDS数据链在部分频带干扰下的性能分析 [J]. 国防科技大学学报, 2010, 32(1): 122-126.YANG Guang, ZHOU Jinglun, LUO Pengcheng. Performance analysis of JTIDS with partial band noise interference [J]. Journal of National University of Defense Technology, 2010, 32(1): 122-126.(in Chinese)
[2] 韩天石, 黄琦志. 通信原理与应用[M]. 北京: 国防工业出版社, 2005.HAN Tianshi, HUANG Qizhi. Principles and Applications of Communication [M]. Beijing: National Defence Industry Press, 2005. (in Chinese)
[3] Baum C W, Pursley M B. Bayesian methods for erasure insertion in frequency-hop communication systems with partial-band interference [J]. IEEE Transactions on Communications, 1992, 40(7): 1231-1238.
[4] Gamal H E, Geraniotis E. Iterative channel estimation and decoding for convolutionally coded anti-jam FH signals [J]. IEEE Transactions on Communications, 2002, 50(2): 321-331.
[5] Phoel W G. Iterative demodulation and decoding of frequency-hopped PSK in partial-band jamming [J]. IEEE Journal on Selected Areas in Communications, 2005, 23(5): 1026-1033.
[6] Aung A, Teh K C, Li K H. Interference detection in slow frequency-hopped quadrature phase-shift-keying systems over fading channels [J]. IET Communications, 2013, 7(13): 1317-1321.
[7] Ahmad G, Ayman E. Iterative MMSE estimation of SINR for turbo-coded FH-SS systems in partial-band interference and fading channels [J]. European Transactions on Telecommunications, 2011, 22(2): 93-97.
[8] YAO Huan, Huang J C, Wornell G W. Achieving high bandwidth efficiency under partial-band noise jamming [C]// Proc 32nd IEEE MILCOM. San Diego, CA, USA: IEEE Press, 2013: 1133-1138.
[9] 王勖健. 扩跳频系统抗干扰性能分析 [D]. 成都: 电子科技大学, 2010.WANG Xujian. Analysis and Simulation of Anti Jamming Performance of Spread Spectrum and Frequency Hopping System [D]. Chengdu: University of Electronic Science and Technology, 2010. (in Chinese)
[10] XUE Dunwei, ZHOU Xuping, Performance study on a DS/FH hybrid system with concatenated coding in strong partial band noise [C]// Proc 1st IEEE ICSPCC. Xi'an, China: IEEE Press, 2011:1-6.
[11] Ryu H G, Kim Y Y. Effects of partial-band noise interference on hybrid DS/SFH MSK system in Rayleigh fading channel [J]. Electronics Letters, 2001, 37(16):1039-1041.
[12] Olama M M, MA Xiao, Kuruganti T P, et al. Hybrid DS/FFH spread-spectrum: A robust, secure transmission technique for communication in harsh environments [C]// Proc 30th IEEE MILCOM. Baltimore, MA, USA: IEEE Press, 2011: 2136-2141.
[13] Block F J, Moore M, Qiu D, et al. Frequency-hop multiple-access systems with limited per-hop multi-user detection [C]// Proc 34th IEEE Aerospace Conference. Big Sky, MT, USA: IEEE Press, 2013: 1-7.

[1]	周世东,俞抒鹏,肖立民,钟晓峰. OFDM星座旋转调制自适应交织器设计[J]. 清华大学学报（自然科学版）, 2014, 54(4): 458-463.