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LDPC码和协作MIMO系统结合的波束成形技术性能分析

Performance Analysis for Beamforming Technique of Combination with LDPC Code and Cooperative MIMO System
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摘要 将波束成形技术用在协作多输入多输出(MIMO)系统中,通过半双工的放大转发模式的中继传输协议,提出了奇异值分解与最小均方误差(SVD-MMSE)混合波束成形技术的方法。将发送端的信息采用低密度奇偶校验码(LDPC)编码,可以有效利用空间分集,提高了系统性能。通过Matlab仿真表明SVD-MMSE的混合算法的误码率性能比单一的SVD算法和MMSE算法在BER=10^(-6)时分别提高了0.5 dB和0.4 dB左右。 The beamforming technique in cooperative multiple-input multiple-output（MIMO） system is presen- ted. The amplify-forward and half-duplex mode is used in the relay transport protocol. A novel algorithm of sin- gular value decomposition and minimum-mean-square error（SVD-MMSE） beamforming is proposed. The trans- mitting information using low-density parity-cheek code（LDPC） can effectively use spatial diversity to improve the system performance. Matlab simulation shows that the hybrid algorithm SVD-MMSE bit-error rate perform- ance can respectively improve 0. 5 dB and 0. 4 dB at BER = 10-6 than only SVD algorithm and MMSE algo- rithm.
作者 张艳 仰枫帆 宋维君 胡小丽
机构地区 南京信息职业技术学院电子信息学院 南京航空航天大学电子信息工程学院
出处 《测控技术》 CSCD 北大核心 2012年第11期28-30,36,共4页 Measurement & Control Technology
关键词 波束成形技术 协作多输入多输出(MIMO) 奇偶校验码 奇异值分解 最小均方误差 beamforming technique cooperative MIMO low-density parity-check code singular value decom-position least-mean-square error
分类号 TN911 [电子电信—通信与信息系统]
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参考文献11

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测控技术
2012年 第11期

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