| 广义球形解码算法的一种改进 |
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| 引用本文： | 邓祁.广义球形解码算法的一种改进[J].西安邮电学院学报,2011,16(5):31-34. |
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| 作者姓名： | 邓祁 |
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| 作者单位： | 南京邮电大学通信与信息工程学院,江苏南京,210003 |
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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。
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| 关 键 词： | 广义球形解码 低复杂度 预处理 迫零检测 |
A generalized sphere decoder and amelioration |
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| DENG Qi.A generalized sphere decoder and amelioration[J].Journal of Xi'an Institute of Posts and Telecommunications,2011,16(5):31-34. |
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| Authors: | DENG Qi |
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| Affiliation: | DENG Qi(College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China) |
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| Abstract: | 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. |
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| Keywords: | generalized sphere decoder low complexity pro-processed zero-forcing |
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