【作者】 刘伟； 张春阳； 邵珠雷；

【Author】 LIU Wei , ZHANG Chunyang, SHAO Zhulei (School of Electrical Information Engineering, Henan University of Science & Technology, Luoyang, 471003)

【机构】 河南科技大学电子信息工程学院；

【摘要】 介绍了相关Rayleigh多输入多输出(MIMO)信道中混合迫零最大比合并-连续干扰抵消的星座预编码的实现方法和球译码的性能。星座预编码的星座复用技术实现强相关MIMO信道中的数据传输而克服接收端的星座混迭。空分复用和星座复用根据发射信道的相关特性采用星座预编码统一实现,接收端采用统一的信号检测技术。球译码可以实现相关衰落信道低复杂性的最大似然译码。研究结果表明,在强相关MIMO信道中星座复用和独立衰落信道中的分层空时系统相比性能只有4dB的恶化。更多还原

【Abstract】 The realization method of constellations precoding systems and performance of sphere decoding in correlated Rayleigh multiple input multiple output (MIMO) channels based on hybrid zero forcing maximum ratio combining successive interference cancelation is studied. Constellations precoding over correlated MIMO channels can be used to realize data transmission to eliminate the constellation overlap over strong correlated fading channels. Spatial multiplexing and constellations multiplexing are realized by constellation procoding at transmitter and the simular signal detection is realized at receiver. The sphere decoding is low-complexity maximum likelihood decoding method. It is shown that performance of constellation precoding over correlated MIMO channels is worsened 4 dB compared to layered space-time modulation over independent channels.更多还原