Covariance factor matrix reuse

协方差因数矩阵重新使用

Abstract

本文公开一种方法和装置,用于减少与计算用于在无线接收器处接收的无线信号的加权因数关联的计算负荷。该方法和装置重新使用协方差因数矩阵来计算用于多个接收信号的加权因数的多个集合。特定实施例将为第一接收信号确定的协方差矩阵进行因数分解来确定协方差因数矩阵,并且使用该协方差因数矩阵来确定用于第一接收信号的加权因数的集合并且确定用于一个或多个附加接收信号的加权因数的附加集合。不同的接收信号可以与不同时间、不同信道化码、和/或不同频率关联。加权因数可以用于加权并且组合GRAKE接收器或码片均衡器中的接收信号。加权因数还可用于确定信号质量度量。
A method and apparatus for reducing the computational load associated with computing weighting factors for wireless signals received at a wireless receiver is disclosed herein. The method and apparatus reuses a covariance factor matrix to compute multiple sets of weighting factors for multiple received signals. Particular embodiments factor a covariance matrix determined for a first received signal to determine a covariance factor matrix, and use the covariance factor matrix to determine a set of weighting factors for the first received signal as well as to determine additional sets of weighting factors for one or more additional received signals. The different received signals may be associated with different times, different channelization codes, and/or different frequencies. The weighting factors may be used to weight and combine received signals in a GRAKE receiver or chip equalizer. The weighting factors may also be used to determine a signal quality metric.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    CN-1771671-AMay 10, 2006艾利森电话股份有限公司Cdma通信系统中的联合多码检测器
    US-2008063033-A1March 13, 2008Telefonaktiebolaget Lm Ericsson (Publ)Method for Covariance Matrix Update
    US-2009213944-A1August 27, 2009Grant Stephen JReceiver Parametric Covariance Estimation for Precoded MIMO Transmissions

NO-Patent Citations (0)

    Title

Cited By (0)

    Publication numberPublication dateAssigneeTitle