在短波干扰信道下，对采用限幅度量的动态频谱抗干扰系统比特误码率（BER）进行理论分析。以Odenwalder(2, 1, 7)卷积码作为纠错编码，给出系统的BER上界，并进行仿真验证。结果表明，采用纠错编码及抗干扰译码度量后，系统的抗干扰性能提升可达10dB以上。
Bit error rate (BER) performance of the dynamic spectrum anti-jamming (DSAJ) systems using clipped decoding metric is analyzed under a high-frequency (HF) interference channel. BER upperbound is deduced and validated via simulation with Odenwalder (2, 1, 7) convolutional code as the error correction coding scheme. Results show that the anti-jamming capability of DSAJ systems improves more than 10dB with error correction coding and anti-jamming decoding metric being used.
2021,43(7): 143-147 收稿日期：2020-08-26
DOI：10.3404/j.issn.1672-7649.2021.07.029
分类号：TN914
作者简介：赵明(1979-),男,工程师,主要从事海军装备的论证工作
参考文献：
[1] 陆建勋. 短波自适应通信新体制原理探讨[J]. 舰船无线电通信, 1982(3):1-8
[2] GOLDSMITH A, JAFAR S A, MARIC I, et al. Breaking spectrum gridlock with cognitive radios:an information theoretic Per- spective[J]. IEEE Proceedings, 2009, 97(5):894-914
[3] HAYKIN S. Cognitive radio:brain-empowered wireless communications[J]. IEEE Journals on Selected Areas in Communications, 2005, 23(2):201-220
[4] 陆建勋. 信息对抗与智能无线通信[J]. 现代军事通信, 2012, 20(2):1-6
[5] Y. ZHU. Processing gain of dynamic spectrum anti-jamming systems[C]//Proc. of 7th International Conference on Wireless Communications, Networking and Mobile Computing. Wuhan, China, 2011:1−4.
[6] 朱毅超. 动态频谱抗干扰系统的比特误码率分析[C]//军事通信抗干扰研讨会, 2011, 519−524.
[7] 朱毅超, 陆建勋. 动态频谱抗干扰系统在部分频带干扰下的性能[J]. 电子学报, 2011, 39(10):2331-2337
[8] 朱毅超, 王平, 张鑫明, 等. 动态频谱抗干扰系统在多音干扰下的比特误码率[J]. 现代军事通信, 2016, 24(1):6-10
[9] ZHU Yi-chao, GUO Chao, WANG Xiao-xue. Throughput analysis of dynamic spectrum anti-jamming multiple-access in HF communication systems[J]. China Communications, 2018, 15(9):85-94
[10] ZHU Yi-chao, WANG Ping, LU Jian-xun. A new HF radio prototype based on dynamic spectrum anti-jamming concept[C]//Proc. of CHINACOM'11, Harbin, China, 2011:1-4.
[11] SIMON M K, OMURA J K, SCHOLTZ R A, et al. Spread spectrum communications handbook[M]. 北京:人民邮电出版社, 2002.
[12] GOTT G F, CHAN S K, PANTJIAROS C A, et al. High frequency spectral occupancy at the solstices[J]. IEEE Proceedings on Communications, 1997, 144(1):24-32
[13] BARK G. Performance comparison of spread-spectrum methods on an interference-limited HF channel[J]. IEEE Proceedings on Communications, 1999, 146(1):23-28
[14] PROAKIS J G. Digital communications (4th ed)[M]. 北京:电子工业出版社, 2001.
[15] C. M. KELLER, M. B. Pursley clipped diversity combining for channels with partial-band interference-Part II:Ratio-statistic combining[J]. IEEE Transactions on Communications, 1989, 37(2):145-151
