| 多用户MIMO信道下行链路预编码方案对比研究 |
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| 引用本文： | 贾蓉,武刚,何旭. 多用户MIMO信道下行链路预编码方案对比研究[J]. 电子科技大学学报(社会科学版), 2008, 0(Z1) |
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| 作者姓名： | 贾蓉 武刚 何旭 |
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| 作者单位： | 电子科技大学通信抗干扰技术国家级重点实验室;电子科技大学通信抗干扰技术国家级重点实验室 成都; |
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| 摘 要： | 研究了多用户MIMO系统中基于信漏噪声比(SLNR)的预编码算法,给出了求解方法,并分析了基于信干噪声比的迫零算法必须满足的天线约束条件。与迫零算法相比,基于信漏噪声比的预编码算法没有限制发送端和接收端天线数,同时由于考虑了噪声的影响,不会有噪声放大,可以得到闭合解。仿真部分对基于信漏噪声比的预编码算法与基于信干噪声比的迫零算法在不同情况下的性能进行了对比,突出了基于信漏噪声比的预编码算法在不满足天线约束条件时的优势。
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| 关 键 词： | 多输入多输出 预编码 信漏噪声比 迫零 |
Comparison Research on Precoding Schemes for Downlink Multi-User MIMO Channels |
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| JIA Rong,WU Gang,, HE Xu. Comparison Research on Precoding Schemes for Downlink Multi-User MIMO Channels[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2008, 0(Z1) |
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| Authors: | JIA Rong WU Gang HE Xu |
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| Affiliation: | JIA Rong,WU Gang,, HE Xu (National Key Laboratory of Communication,University of Electronic Science , Technology of China Chengdu 610054) |
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| Abstract: | This paper studies a leakage based precoding scheme and analysize the antenna condition of the zero-forcing algorithm. Compared to the zero-forcing algorithm, the leakage based precoding scheme relaxes the condition on the number of transmit and receive antennas, avoids noise enhancement, and leads to decouple solutions. Simulations show the performance comparison between the leakage based precoding scheme and zero-forcing algorithm with different antenna configurations. The simulation results demonstrate t... |
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| Keywords: | multiple-input multiple-output precoding signal-to-leakage-and-noise ratio zero-forcing |
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