| 对Rayleigh相关信道的分集性能研究 |
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| 引用本文： | 唐奡,龚克. 对Rayleigh相关信道的分集性能研究[J]. 清华大学学报(自然科学版), 2002, 42(1): 1-3 |
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| 作者姓名： | 唐奡 龚克 |
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| 作者单位： | 清华大学,电子工程系,北京,100084 |
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| 摘 要： | 研究了在 Rayleigh衰落下具有不同相关性的分集支路的分集性能。研究的分集策略是最大比合并和选择合并 ,采用 Monte Carlo方法仿真了系统输出信噪比超过门限的概率。结果表明 :在最大比合并下 ,当各路平均信噪比与门限相比较小时 (两路时约为 - 4d B,三路时约为- 13d B) ,各分集支路越相关 ,输出信噪比超过门限的概率越大。在其他情况下 ,各分集支路越独立 ,分集效果越好 ,并且最大比合并总是优于选择合并
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| 关 键 词： | 相关系数 最大比合并 选择合并 Rayleigh衰落 |
| 文章编号： | 1000-0054(2002)01-0001-03 |
| 修稿时间： | 2000-12-06 |
Diversity performance on correlated Rayleigh fading channels |
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| TANG Ao,GONG Ke. Diversity performance on correlated Rayleigh fading channels[J]. Journal of Tsinghua University(Science and Technology), 2002, 42(1): 1-3 |
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| Authors: | TANG Ao GONG Ke |
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| Abstract: | The Diversity performance of correlated Rayleigh fading channels was investigated. The Monte Carlo method was used to study the probability that the output SNR exceeds the given threshold for diversity schemes such as maximum ratio combining and selection combining. In maximal ratio combining, when each branch's average SNR is relatively small compared to the threshold (-4dB or so for two branches and -13dB or so for 3 branches), our results show that the probability that the output SNR exceeds the given threshold grows as the correlation coefficient increases. For other conditions, the probability increases is the correlation coefficient decreases. |
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| Keywords: | correlation coefficient maximal ratio combining selection combining Rayleigh fading |
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