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基于合并网格路径构造的超正交空时网格码

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摘要 研究了超正交空时网格码和超准正交空时网格码的网格图特性,提出了一种基于合并网格传输路径的超正交空时网格编码方法.新方法研究了2×2正交空时分组码和4×4准正交空时分组码之间的结构关系,并利用2-TCM编码器构造出可用于4发射天线条件下的满速率、超正交空时网格码;并将2×2正交空时分组码矩阵结合星座图旋转的方法,使得新方法在获得高的编码增益同时,获得满分集增益.实验结果表明,在相同的条件下,新方法获得的编码增益比现有的基于4发射天线的超准正交空时分组编码方法提高2dB以上.
出处 《中国科学:信息科学》 CSCD 2010年第12期1626-1635,共10页 Scientia Sinica(Informationis)
基金 国家自然科学基金(批准号:60862001) 广西信息与通讯技术重点实验室主任基金(批准号:10908) 新世纪人才基金(批准号:NCET-04-0947)资助项目
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参考文献9

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