| 相关瑞利衰落信道的最大比合并 |
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| 引用本文： | 宿淑春,程型清,李道本.相关瑞利衰落信道的最大比合并[J].北京电子科技学院学报,2003,11(2):11-14. |
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| 作者姓名： | 宿淑春 程型清 李道本 |
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| 作者单位： | 1. 北京电子科技学院电子信息工程系,北京,100070
2. 北京邮电大学信息工程学院,北京,100876 |
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| 基金项目： | 国家自然科学基金资助项目(No.69931050) |
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| 摘 要： | 现有的文献对于相关瑞利信道最大比合并的研究不是假设条件比较特殊，就是分析的方法过于繁琐；针对这种情况，本文证明了相关瑞利信道的最大比合并性能等价于独立瑞利支路的最大比合并的性能，同时也证明了相关瑞利支路的输出信噪比的概率密度函数等于各个不相关瑞利支路的信噪比概率密度函数的加权和，最后在上述结论的基础上，针对BPSK调制方式，用数值计算的方法说明了上述结论的正确性及简单有效性。
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| 关 键 词： | 最大比合并 相关瑞利信道 概率密度函数 |
| 文章编号： | 1672-464X(2003)02-0011-04 |
| 修稿时间： | 2003年8月12日 |
Maximal Ratio Combined with Correlated Rayleigh Channels |
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| Su Shu-chun,Cheng Xing-qing,Li Dao-ben.Maximal Ratio Combined with Correlated Rayleigh Channels[J].Journal of Beijing Electronic Science & Technology Institute,2003,11(2):11-14. |
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| Authors: | Su Shu-chun Cheng Xing-qing Li Dao-ben |
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| Abstract: | The performance of maximal ratio combining has been well studied in literature, but either the condition is special or the method is complex. In order to find a simple and effective method, this paper has proved that performance of maximal ratio combining with correlated Rayleigh diversity branches is identical to that of an equivalent diversity system with independent and unbalanced inputs. It is also proved that probability density function (pdf) of maximal ratio combining with correlated Rayleigh branches is identical to the weighted value of the pdf of maximal ratio combining with individual Rayleigh branches. Based on the results, BPSK is analyzed as an example, showing that the approach is simple and effective. |
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| Keywords: | maximal ratio combining correlated Rayleigh branch probability density function(pdf) |
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