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电子学报  2013 

基于中继放大转发的多天线基站下行传输性能分析

DOI: 10.3969/j.issn.0372-2112.2013.07.010, PP. 1305-1312

Keywords: 多天线系统,无线中继转发系统,正交空时分组编码,多用户分集

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Abstract:

研究基站具有多根天线、中继与用户具有单天线的中继放大转发多用户系统,利用正交空时分组编码和机会主义调度策略同时获得空间分集和多用户分集.针对自适应增益和固定增益转发策略,首先导出独立不同分布瑞利衰落下系统中断概率和误码率的闭合表达式;随后根据高信噪比下系统的渐近性能确定系统的分集阶数,分析空间分集和多用户分集对系统性能的联合影响,并与单跳多天线基站下行传输系统进行性能比较;最后利用计算机仿真验证理论分析结果的正确性.

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