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广义球形解码算法的一种改进

A generalized sphere decoder and amelioration
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摘要 广义常规球形解码算法能处理多输入多输出系统(Multiple-Input Multiple-Out-put,MIMO)中发送天线多于接收天线的情况,但是对于非等符号能量的星座图,如正交幅度调制(Quadrature Amplitude Modulation,QAM)运算量大。为了进一步降低算法复杂度,提出一种改进的快速算法,该算法采用了预处理排序策略和广义球形解码与迫零检测结合的搜索策略,从而避免了高复杂度。仿真结果表明该快速广义球形解码算法以较小的性能损失换取明显的复杂度减少。 Considering that the standard generalized sphere decoder is of high complexity in some cases, a fast algorithm is proposed. The ameliorated algorithm works according to a pretreatment taxis strategy and a hybrid search strategy which is combined of zero-forcing detection with generalized sphere decoder. Simulation results show that, the ameliorated algorithm exchanges a small performance loss for significantly lower complexity.
作者 邓祁
机构地区 南京邮电大学通信与信息工程学院
出处 《西安邮电学院学报》 2011年第5期31-34,共4页 Journal of Xi'an Institute of Posts and Telecommunications
关键词 广义球形解码 低复杂度 预处理 迫零检测 generalized sphere decoder low complexity pro-processed zero-forcing
分类号 TN911.7 [电子电信—通信与信息系统]
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参考文献9

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西安邮电学院学报
2011年 第5期

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