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基于比特对数似然比GSC的MQAM性能分析

Performance Analysis of MQAM with Generalized Selection Combining Based on the Bit Log-likelihood Ratio
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摘要 研究相关Nakagami-m衰落信道上基于信噪比广义选择合并(SNR-GSC)和比特对数似然比广义选择合并(BLLR-GSC)天线分集的M进制正交幅度调制(MQAM)系统的误比特率性能。推导相关Nakagami-m衰落信道上基于信噪比最大比合并(MRC)的MQAM平均误比特率表达式。仿真结果表明采用L支路基于信噪比的MRC的误比特率和选择L/2支路的BLLR-GSC的误比特率相等。 Bit error rate performance of M - ary quadrature amplitude modulation （MQAM） signals with generalized selection combining scheme based on signal - to - noise ratio （SNR - GSC）or bit log - likelihood ratio （BLLR - GSC） on correlated Nakagami - m fading channels has been investigated. The average bit error rate of MQAM with maximum ratio combining （MRC） on correlated Nakagami - m fading channels is also derived. Simulation results show that the bit error rate with MRC is identical to that with BILR - GSC of L/2 branches.
作者 卢东斌 李光球 江虹
机构地区 杭州电子科技大学通信工程学院
出处 《杭州电子科技大学学报（自然科学版）》 2006年第5期16-21,共6页 Journal of Hangzhou Dianzi University：Natural Sciences
基金 浙江省自然科学基金青年科技人才培养项目(R105473) 浙江省教育厅重点科研项目(20060268)
关键词 正交幅度调制 广义选择合并 相关衰落信道 比特对数似然比 quadrature amplitude modulation generalized selection combining correlated fading channels bit log - likelihood ratio
分类号 TN911.2 [电子电信—通信与信息系统]
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参考文献9

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杭州电子科技大学学报（自然科学版）
2006年 第5期

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