| 非理想信道估计下的放大转发协同通信系统性能分析 |
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| 引用本文： | 王 磊,蔡跃明,杨炜伟,屠 佳.非理想信道估计下的放大转发协同通信系统性能分析[J].通信学报,2011,32(6):116-123. |
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| 作者姓名： | 王 磊 蔡跃明 杨炜伟 屠 佳 |
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| 作者单位： | 解放军理工大学通信工程学院,江苏南京,210007 |
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| 基金项目： | 国家自然科学基金资助项目，国家科技计划重大专项基金资助项目，江苏省自然科学基金资助项目 |
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| 摘 要： | 针对两跳多中继放大转发协同通信系统,分析了信道估计误差对系统性能的影响。考虑机会中继和全参与中继两种中继策略,分别推导了系统误码率的闭式表达式,并分析了不同信道估计质量阶数下的系统分集增益。平均信噪比损失率分析表明机会中继较全参与中继对信道估计误差更为敏感。仿真结果验证了理论分析。
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| 关 键 词： | 信道估计误差 误码率 分集增益 信噪比损失率 |
Performance analysis of amplify-and-forward cooperative communication systems with imperfect channel estimation |
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| WANG Lei,CAI Yue-ming,YANG Wei-wei,TU Jia.Performance analysis of amplify-and-forward cooperative communication systems with imperfect channel estimation[J].Journal on Communications,2011,32(6):116-123. |
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| Authors: | WANG Lei CAI Yue-ming YANG Wei-wei TU Jia |
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| Institution: | WANG Lei,CAI Yue-ming,YANG Wei-wei,TU Jia(Institute of Communications Engineering,PLA University of Science and Technology,Nanjing 210007,China) |
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| Abstract: | The impact of channel estimation errors on the performance for two-hop multi-relays assisted am-plify-and-forward(AF) cooperative communication systems was investigated.Closed-form expressions of the average symbol error rate,as well as the diversity gain under different channel estimation quality orders for both opportunistic re-laying(OPR) and all-participate relaying(APR) schemes were derived.Average signal-to-noise-ratio(SNR) gap ratio is investigated for the two types of cooperative communication syste... |
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| Keywords: | channel estimation error error rate diversity gain SNR gap ratio |
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