| 基于比特对数似然比GSC的MQAM性能分析 |
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| 引用本文： | 卢东斌,李光球,江虹. 基于比特对数似然比GSC的MQAM性能分析[J]. 杭州电子科技大学学报, 2006, 26(5): 16-21 |
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| 作者姓名： | 卢东斌 李光球 江虹 |
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| 作者单位： | 杭州电子科技大学通信工程学院,浙江,杭州,310018 |
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| 基金项目： | 浙江省自然科学基金;浙江省教育厅资助项目;青年科技人才培养项目 |
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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。
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| 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 |
| 文章编号： | 1001-9146（2006）05-0016-06 |
| 收稿时间： | 2006-09-22 |
| 修稿时间： | 2006-09-22 |
Performance Analysis of MQAM with Generalized Selection Combining Based on the Bit Log-likelihood Ratio |
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| LU Dong-bin,LI Guang-qiu,JIANG Hong. Performance Analysis of MQAM with Generalized Selection Combining Based on the Bit Log-likelihood Ratio[J]. Journal of Hangzhou Dianzi University, 2006, 26(5): 16-21 |
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| Authors: | LU Dong-bin LI Guang-qiu JIANG Hong |
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| Affiliation: | School of Communication Engineering, Hangzhou Dianzi University, Hangzhou Zhejiang 310018, China |
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| Abstract: | 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 Nakagamim 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 BLLR-GSC of L/2 branches. |
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| Keywords: | quadrature amplitude modulation generalized selection combining correlated fading channels bit log - likelihood ratio |
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