短波信道时延对FH/MFSK系统抗瑞利衰落的影响

短波信道时延对FH/MFSK系统抗瑞利衰落的影响 ABOUT EFFECT OF DELAY τ ON FH/MFSK SYSTEM PERFORMANCE RESISTANT TO THE RAYLEIGH FADING IN SHORT-WAVE CHANNEL 甘良才 Gan Liangcai 1 2 3 first-author 金伟正 Jin Weizhen 1 2 3 张肃文 Zhang Suwen 1 2 3 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 Electronics Information, Wuhan University Department of Space Physics and Electronics Information, Wuhan University 武汉大学空间物理与电子信息学系,武汉 武汉大学空间物理与电子信息学系,武汉 ,430072 ,430072 本文在对Gordon提出的分集与编码相结合的通信系统模型进行了分析研究,并考虑了反馈链路时延（τ）对噪声干扰的短波信道抗瑞利衰落的影响。研究结果表明:在可用的误码率范围内,时延因子（B d ·τ）必须小于0.05,该系统模型对短波通信才适用。 The FH/MFSK communication system model with diversity and coding purposed by Gordon is analysed and studies. Considering the effect of delay τ of feedback link in noise-jamming short-wave channel on the system performance resistant to Rayleigh fading, the researched results indicate that the given system model is useful for short-wave communication when the delay factor B ■ ·τ must be less than 0.05 in the range of error probability available. 时延 分集 反馈链路 短波信道 瑞利衰落 频率选择式 time delay diversity feedback link frequency selective Rayleigh fading shortwave channel TN761.8;TN850.9 国家自然科学基金(61672102) 1993-02-01 2021-04-01 2