短波信道时延对FH/MFSK系统抗噪声干扰的影响

短波信道时延对FH/MFSK系统抗噪声干扰的影响 ABOUT EFFECT OF TIME DELAY ON FH/MFSK SYSTEM PERFORMANCE RESISTANT TO THE NOISE JAMMING IN SHORT-WAVE CHANNEL 甘良才 Gan Liangcai Jin Weizhen Zhang Suwen 1 first-author 金伟正 1 张肃文 1 武汉大学空间物理与电子信息学系 武汉大学空间物理与电子信息学系 Department of Space Physics and Electronic Information, Wuhan University Department of Space Physics and Electronic Information, Wuhan University 本文对 GORDON 提出的分集与编码相结合的 FH/MFSK 通信系统模型进行了分析、研究,并考虑了反馈链路时延τ在噪声干扰的短波信道中,对抗噪声干扰影响的系统性能,研究结果表明:在可用的误码率范围内,时延因子（Bd*τ）必须小于0.05时,该系统模型对短波信道才是适用的. In this paper, the FH/MFSK communication system model with diversity and coding purposed by Gordon is analysed and studied. Considering the effect of time delay τ of feedback link in Noise Jamming short-wave channel on the system performance resistant to Noise jamming, the re- searched results indicate that the given system model is useful for short-wave communications when the time delay factor Bd * τ must be less then 0. 05 in the range of error probability available. 时延 反馈链路 频率选择性 分集 噪声干扰 time delay feedback link frequency selective diversity noise jamming TN761.8;TN850.9 国家自然科学基金资助的课题 1993-05-01 2021-04-01 5