电信科学 ›› 2012, Vol. 28 ›› Issue (2): 59-62.doi: 10.3969/j.issn.1000-0801.2012.02.010

• 研究与开发 • 上一篇    下一篇

一种基于LTE的改进型V-BLAST算法研究

李小文,任旭   

  1. 重庆邮电大学通信与信息工程学院 重庆 400065
  • 出版日期:2012-02-15 发布日期:2012-02-15
  • 基金资助:
    国家科技重大专项基金资助项目

An Improved V-BLAST Algorithm Based on LTE

Xiaowen Li,Xu Ren   

  1. School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China
  • Online:2012-02-15 Published:2012-02-15

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被引次数

3

摘要：

信号检测在 LTE 系统的接收端至关重要，常规 V-BLAST 算法在进行信号检测时，存在误码传播的情况，造成了性能的下降。本文提出了一种改进型V-BLAST 算法，在两方面改善了该算法的性能。首先在最先检测层对要检测的符号进行排序时，采用了一种新的计算概率值的方法，然后根据调制方式保留了 K 个与判决统计量欧氏距离最近的星座点，其他各层依旧采用常规的V-BLAST 算法。仿真结果表明，该算法的性能较常规的V-BLAST 算法有了明显改善，该算法已应用于TD-LTE 无线综合测试仪表的开发中。

关键词: 长期演进, 多输入多输出, V-BLAST算法, 信号检测

Abstract:

Signal detection is of great importance in LTE system.Conventional V-BLAST algorithm during signal detection has the spread of error,resulting in a decline in performance.This paper presents an improved V-BLAST algorithm,when it is first detected,this paper uses a new method which calculates the value of probability to make the symbols to be detected in order,and this layer retains the K Euclidean constellation points which are nearest to statistics judgment according to the modulate mode,and the other layers are still using V-BLAST algorithm.Compared with the conventional algorithm,the improved one has much better performance,which has been applied to TD-LTE wireless integrated test instrument.

Key words: LTE,MIMO, V-BLAST algorithm, signal detection

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