Performance Analysis of User Selection for Multiuser Two-Way Amplify-and-Forward Relay
Performance Analysis of User Selection for Multiuser Two-Way Amplify-and-Forward Relay
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DOI：
10.1109/lcomm.2010.100410.101004
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发表时间：
2010-11
期刊：
影响因子：
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通讯作者：
Yong-Up Jang;Y. H. Lee
中科院分区：
文献类型：
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作者：
Yong-Up Jang;Y. H. Lee
本文研究了一种多用户双向中继信道（MU-TWRC），在该信道中，一个基站和K个移动台中的一个移动台通过一个半双工放大转发中继在两个时隙内交换消息。我们分析了MU-TWRC的性能。导出了平均速率下界的封闭表达式。在大K的限制下，分析了平均速率的渐近表达式。分析和仿真结果表明，前者与后者具有较好的匹配性，MU-TWRC的性能可以随着K的增加而提高，也可以根据信道条件限制为某个常数。
This paper considers a multiuser two-way relay channel (MU-TWRC) in which a base-station and a selected mobile-station (MS) among K number of MSs exchange messages during two time slots with the help of a half-duplex amplify-and-forward relay. We analyze the performances of a MU-TWRC. The closed-form expressions of the lower bound of the average rates are derived. The asymptotic expressions of the average rates are also analyzed in the limit of large K. Analysis and simulation results indicate that the former matches well to the latter, and the performance of a MU-TWRC can increase as K increases or be bounded to some constant according to the channel conditions.