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电子学报  2004 

时延约束条件下MIMO多接入信道传输策略和功率分配

, PP. 118-122

Keywords: 多输入多输出系统,多接入信道,时延约束容量,功率分配,干扰回避

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Abstract:

本文分析了时延约束条件下多输入多输出(MIMO)多接入信道的发送优化问题,利用标准优化方法,给出了多用户的传输策略和功率分配方案,具体分两步考虑:第一步通过应用顺序译码方法,给出每个用户基于干扰回避的分布式优化预编码字;第二步对每个用户进行单用户信道的注水功率分配.同时应用MMSE(MinimumMeanSquareError)接收结构结合串行干扰消除技术,给出了一种基于独立SINR(SignaltoInterferencePlusNoiseRatio)准则的次优功率分配方案.数值结果表明,给出的最优传输和次优传输策略性能非常相近,可以显著提高时延约束条件下系统的性能和容量.

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