| 利用干扰消除的协同中继传输方案 |
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| 引用本文： | 李国友,周亚建,原泉,杨义先.利用干扰消除的协同中继传输方案[J].应用科学学报,2013,31(2):111-115. |
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| 作者姓名： | 李国友 周亚建 原泉 杨义先 |
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| 作者单位： | 北京邮电大学信息安全中心，北京100876 |
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| 基金项目： | 国家重大科技专项基金(No.2010ZX03003-003-01)； 国家自然科学基金(No.61121061, 61161140320)资助 |
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| 摘 要： | 为了提高无线协同中继传输系统的可达速率和吞吐量，提出了利用干扰消除的协同传输方案. 通过监听获得干扰信号的先验信息，再利用干扰重构减去技术来消除干扰信号，减少了系统传输时隙. 同时，推导出系统可达速率和中断概率的表达式，分析了不同传输方案下不同中继转发模式的系统性能. 仿真结果表明：随着链路信噪比的增大，基于干扰消除的协同传输方案能够有效地提高系统可达速率；当链路信噪比未知时，通过调节发送速率，可以获得系统的最优吞吐量.
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| 关 键 词： | 协同通信 干扰消除 可达速率 中断概率 |
| 收稿时间： | 2012-01-11 |
| 修稿时间： | 2012-09-05 |
Cooperative Relay Transmission Scheme Based on Interference Cancelation |
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| LI Guo-you,ZHOU Ya-jian,YUAN Quan,YANG Yi-xian.Cooperative Relay Transmission Scheme Based on Interference Cancelation[J].Journal of Applied Sciences,2013,31(2):111-115. |
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| Authors: | LI Guo-you ZHOU Ya-jian YUAN Quan YANG Yi-xian |
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| Institution: | Information Security Center, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | In order to improve system achievable rate and throughput for wireless systems, this paper proposes a cooperative relay transmission scheme with interference cancelation. By overhearing interference signal as a priori information, the proposed scheme uses interference reconstruction and subtraction to cancel interference,reducing the time slot. Moreover, the paper derives the system achievable rate and outage probability expressions, and analyses the performance of different transmission schemes in diverse relay modes. Simulation results show that the proposed scheme can effectively improve the system achievable rate as the link signal-tonoise ratio (SNR) increases. By adjusting the transmission rate, optimal system throughput is obtained when
the link SNR at the receiver is unknown. |
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| Keywords: | cooperative communication interference cancelation achievable rate outage probability |
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