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多输入多输出系统中基于长方阻塞矩阵的酉多级Wiener降秩联合检测算法

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摘要 针对传统均衡算法复杂度高、收敛速度慢的问题,提出了一种基于长方阻塞矩阵的多级Wiener降秩联合检测算法,其中的多级Wiener滤波器通过相关相减结构来实现,即酉多级Wiener滤波器.该算法选取酉多级Wiener滤波器阻塞矩阵中的一个长方子阵作为阻塞矩阵,使得酉多级Wiener滤波器前向递推分解中接收信号向量的维数逐级降低,从而在降低了均衡的迭代复杂度的同时,加快了算法的收敛速度.理论分析和仿真结果表明,基于长方阻塞矩阵的酉多级Wiener联合检测算法具有复杂度低、收敛速度快的优点.在具有4根发射天线、8根接收天线,并且采用BPSK调制的V-BLAST(vertical Bell labs layered space-time)系统中,采用本算法仅用基于酉多级Wiener滤波的均衡算法一半的计算复杂度在高信噪比处即可达到与其相同的误码性能.
作者 任品毅 汪瑞 张世娇
机构地区 西安交通大学电子与信息工程学院信通系 国家广电总局西安监测台
出处 《中国科学：信息科学》 CSCD 2010年第8期1120-1129,共10页 Scientia Sinica(Informationis)
基金 北京邮电大学泛网无线通信教育部重点实验室基金(批准号:2007101) 国家重点基础研究发展计划(批准号:2009AA011801) 国家自然科学基金(批准号:60832007)资助项目
关键词 多输入多输出系统 酉多级Wiener滤波器 联合检测 阻塞矩阵
分类号 TN919.3 [电子电信—通信与信息系统]
  • 相关文献

参考文献17

  • 1任品毅,权良辉.多输入多输出系统中基于多级维纳滤波的均衡算法[J].西安交通大学学报,2008,42(2):218-221. 被引量：3
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二级参考文献13

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中国科学：信息科学
2010年 第8期

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