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首页> 外文期刊>Wireless personal communications: An Internaional Journal >Correlation Reduction Precoding for Joint Decoding in Overloaded MIMO-OFDM System on Rician Channel
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Correlation Reduction Precoding for Joint Decoding in Overloaded MIMO-OFDM System on Rician Channel

机译:在瑞典通道上过载MIMO-OFDM系统中联合解码的相关预编码

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摘要

This paper presents a correlation reduction precoding scheme for joint decoding in an overloaded multiple input multiple output (MIMO)-orthogonal frequency division multiplexing system. In the overloaded MIMO system, the number of receive antenna elements is less than that of transmit antenna elements. Through joint maximum likelihood (ML) decoding a frequency diversity suppresses the BER degradation owing to the spatial multiplexing of signal streams. On a Rician channel, the correlation among coded symbols deteriorates the performance of the joint ML decoding. Thus, this paper proposes the precoding scheme that reduces the correlation on the Rician channel. Numerical results obtained through computer simulation show that the proposed scheme improves the BER by a factor of 1/10 on the Rician channel with a Rician factor of 10.
机译:本文介绍了一种相关的复印预编码方案,用于在多载多输入多输出(MIMO) - 正交频分复用系统中的联合解码。 在过载的MIMO系统中,接收天线元件的数量小于发射天线元件的数量。 通过接头最大可能性(ML)解码频率分集抑制由于信号流的空间复用而抑制了BER劣化。 在瑞典信道上,编码符号之间的相关性劣化了关节M1解码的性能。 因此,本文提出了降低瑞典信道相关联的预编码方案。 通过计算机仿真获得的数值结果表明,该方案在瑞典通道上将BER提高了1/10的因子,RICian因子为10。

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