北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2007, Vol. 30 ›› Issue (4): 83-87.doi: 10.13190/jbupt.200704.83.guozhh

• 论文 • 上一篇    下一篇

快速V-BLAST排序检测方法

郭志恒,李立华,陶小峰   

  1. (北京邮电大学 泛网无线通信教育部重点实验室, 北京 100876)
  • 收稿日期:2006-09-05 修回日期:2007-02-03 出版日期:2007-08-30 发布日期:2007-08-30
  • 通讯作者: 郭志恒

Fast Ordering Detection Algorithm for VBLAST System

GUO Zhi-heng,LI Li-hua,TAO Xiao-feng   

  1. (Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China)
  • Received:2006-09-05 Revised:2007-02-03 Online:2007-08-30 Published:2007-08-30
  • Contact: GUO Zhi-heng

摘要:

提出了一种应用于垂直贝尔实验室分层空时码(VBLAST)系统的新的排序检测算法. 该算法利用新的排序方法和施密特正交化分解算法进行信号的检测,降低了检测算法的复杂度,并将排序与数据检测分离,提高了算法应用的灵活性. 分析结果表明,该算法运算复杂度仅为传统的排序迫零干扰删除算法(ZFSIC)的1/3~3/4,且理论与仿真结果证明新方法性能与传统的ZFSIC误码率(BER)性能相同. 因此,新算法有利于硬件系统的集成实现,达到了降低硬件实现难度和成本的目的.

关键词: 垂直-贝尔实验室分层空时结构, 迫零干扰删除, 检测顺序, 施密特正交化

Abstract:

A new ordering method and detection algorithm based on the Schmidt decomposition for the multiple-input multiple-output (MIMO) system are proposed. The algorithm can achieve the same bit error rate (BER) performance as the traditional zero forcing serial interference cancellation (ZF-SIC ) algorithm while the computational complexity of the proposed algorithm is 1/3 to 2/3 to the traditional ZF-SIC algorithm. Analysis and computer simulation are also presented to verify the algorithm.

Key words: vertical Bell lab layered space time, zero forcing serial interference cancellation, decoding order, Schmidt decomposition

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