| 线性分散码与空间复用组合系统检测算法研究 |
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| 引用本文： | 张林波,刘国枝,肖瑛.线性分散码与空间复用组合系统检测算法研究[J].哈尔滨工程大学学报,2006,27(3):413-417. |
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| 作者姓名： | 张林波 刘国枝 肖瑛 |
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| 作者单位： | 哈尔滨工程大学,水声工程学院,黑龙江,哈尔滨,150001;哈尔滨工程大学,水声工程学院,黑龙江,哈尔滨,150001;哈尔滨工程大学,水声工程学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 在空间上组合空时编码与空间复用技术可以使MIMO通信系统同时获得分集和空间复用增益.为了适合高速传输业务需求,提出线性分散码与空间复用组合系统.针对线性分散码与空间复用组合系统码块的线性结构特点,为了既能保证解码的有效又可以减小检测算法的运算成本,提出定步长改进球形检测算法.基于Matlab平台进行仿真试验,通过与空时正交分组码与空间复用组合系统的性能比较,证明在高频谱利用率的情况下,线性分散码与空间复用组合系统的性能更好,即更适合高速传输业务的需求;在检测算法方面,定步长改进球形检测算法虽然比球形解码算法损失了约1dB的性能,但是运算成本仅为球形算法的30%.
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| 关 键 词： | 线性分散编码 空时正交编码 空间复用 球形解码检测 |
| 文章编号： | 1006-7043(2006)03-0413-05 |
| 修稿时间： | 2005年5月18日 |
Study of detection algorithm for linear-dispersion code and spatial multiplexing combined system |
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| ZHANG Lin-bo,LIU Guo-zhi,XIAO Ying.Study of detection algorithm for linear-dispersion code and spatial multiplexing combined system[J].Journal of Harbin Engineering University,2006,27(3):413-417. |
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| Authors: | ZHANG Lin-bo LIU Guo-zhi XIAO Ying |
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| Abstract: | Space-time block code is combined with a spatial multiplexing technique in a multiple-input multiple-output(MIMO) system to simultaneously obtain diversity gain and spatial multiplexing gain.In order to adapt for a high-rate transmission operation,a linear-dispersion code and spatial multiplexing combined system was proposed.Compared with a space-time orthogonal code and spatial multiplexing combined system,the performance and high spectral efficiency of this system was better.In addition,simulation results show the constant-step modified sphere detection algorithm decreases the performance about 1 dB from the sphere decoding algorithm,but the calculation cost of the constant-step modified sphere detection algorithm is only 30 percent of that of the sphere decoding algorithm. |
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| Keywords: | linear-dispersion code space-time orthogonal code spatial multiplexing sphere decoding detection |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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