一种用于多天线通信系统的接收方法

  • Inventors:
  • Assignees: 北京工业大学
  • Publication Date: December 14, 2011
  • Publication Number: CN-102281091-A

Abstract

一种用于多天线通信系统的接收方法,属于无线信号传输领域,其特征在于,在检测算法的搜索树中,仅对最高两层信号的欧氏距离增量进行排序,使每两层仅保留K个欧氏距离增量较小的子节点,然后计算最高两层中的第2N-1层累积欧氏距离,N表示天线数,依次从第2N-2层开始选取第2N-2层、第2N-3层,计算各层欧式距离增量,并与第一阶段的K个积累欧氏距离相加,得到第2N-3层积累欧氏距离,以此类推,直到第1层为止。本发明可同时并行处理相邻两层信号,减少了排序选择运算和树搜索次数,降低了系统时延和计算复杂度,节省了大量硬件资源。
The invention discloses a reception method for a multi-antenna communication system and belongs to the field of the transmission of radio signals. The reception method is characterized by comprising the following steps of: ordering the Euclidean distance increments of only the top two layers of signals in a search tree of a detection algorithm so that only K sub-nodes with smaller Euclidean distance increments are kept in each two layers; then calculating the accumulated Euclidean distances of the (2N-1) layer in the top two layers, wherein N represents the number of the antenna; and sequentially selecting the (2N-2) layer and the (2N-3) layer from the (2N-2) layer, calculating the Euclidean distance increment of each layer and adding the calculated Euclidean distance increments with K accumulated Euclidean distances in the first period to obtain the accumulated Euclidean distance of the (2N-3) layer, and performing the calculation in the same manner till the accumulated Euclidean distance of the first layer is calculated. According to the invention, two adjacent layers of signals can be simultaneously treated so that the ordering, selecting, calculating and searching times are reduced, the system time relay and the calculation complexity are decreased, and lots of hardware resources are saved.

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    CN-103873120-BMarch 01, 2017中国科学技术大学一种基于宽度优先搜索的多天线系统并行检测方法