| 短波瑞利衰落信道FH／MFSK编码系统的性能 |
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| 引用本文： | 甘良才,王振华. 短波瑞利衰落信道FH／MFSK编码系统的性能[J]. 武汉大学学报(理学版), 1994, 0(2) |
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| 作者姓名： | 甘良才 王振华 |
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| 作者单位： | 武汉大学空间物理与电子信息学系 |
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| 摘 要： | 基于ＳｔｕｂｅｒＧ．Ｌ．的系统模型，研究带反馈链路的选择式频率分集与编码ＦＨ／ＭＦＳＫ系统在具有加性白高斯噪声（ＡＷＧＮ）的瑞利衰落信道中的编码性能，给出了采用ＲＳ码、双－ｋ码、重发码时，编码前与编码后系统的码符差错概率与比特能量噪声比的关系曲线．研究结果表明：无编码时，单纯增加分集重数Ｌ对系统性能的改善并不是十分明显的，只有同时采用分集与编码技术，才能有效地改善系统的性能．
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| 关 键 词： | 跳频，选择式频率分集，瑞利衰落，编码 |
PERFORMANCE ABOUT FH/MFSK CODE SYSTEM IN SHORT-WAVE RAYLEIGH FADING CHANNEL |
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| Gan Liangcai, Wang Zhenhua. PERFORMANCE ABOUT FH/MFSK CODE SYSTEM IN SHORT-WAVE RAYLEIGH FADING CHANNEL[J]. JOurnal of Wuhan University:Natural Science Edition, 1994, 0(2) |
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| Authors: | Gan Liangcai Wang Zhenhua |
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| Abstract: | Based on Stuber G. L. , model, this paper studies the performance of FH/MFSK system with feedback link using selectire .frequency diversity and coding in Rayleighfading channel with additive white Gaussian noise(AWGN). The relationship between symbol error probability and bit energy-to-noise ratio (SNR) are given for RS codes,dual-k convolution codes, and repetition codes. The results indicate:it is not quite obvious for the improvement of system performance if we merely increases number L of diversity, only whenwe adopt both diversity and code technique at the same time, we are able to improve the system performance efficiently. |
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| Keywords: | frequency hopping selective frequency diversity rayleigh fading coding |
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