公开(公告)号：US20140016689A1

公开(公告)日：2014-01-16

申请号：US13757553

申请日：2013-02-01

Applicant: QUALCOMM INCORPORATED

Inventor： Aditya DUA ,  Nate Chizgi

IPC: H04L27/01

CPC classification number: H04L27/01 ,  H04B7/0845 ,  H04B7/0854 ,  H04L25/0204

Abstract: Disclosed are methods and apparatus for initializing an equalizer in a diversity receiver. In one aspect, the initialization includes estimating a channel impulse response (CIR) for each receiver chain of the diversity receiver; determining noise power estimates for each receiver chain based on the CIRs; and adaptively adjusting equalizer taps of each receiver chain based on the noise power estimates. In one aspect, the adaptive adjusting of the equalizer taps is based on scaling the CIR and covariance metrics for the receiver chain with higher noise power by a scale factor determined from the noise power estimates. In another aspect, the adaptive adjusting of the equalizer taps is based adaptive conditioning on the diagonal of the covariance matrix.

Abstract translation: 公开了用于在分集接收机中初始化均衡器的方法和装置。 一方面，初始化包括估计分集接收机的每个接收机链的信道脉冲响应（CIR）; 基于所述CIR确定每个接收机链的噪声功率估计; 以及基于噪声功率估计自适应地调整每个接收机链的均衡器抽头。 在一个方面，均衡器抽头的自适应调整是基于具有较高噪声功率的接收机链的CIR和协方差度量根据从噪声功率估计确定的比例因子来缩放。 在另一方面，均衡器抽头的自适应调整是基于协方差矩阵的对角线上的自适应调节。