公开(公告)号：EP1514449A2

公开(公告)日：2005-03-16

申请号：EP02719517.1

申请日：2002-04-17

申请人： Lockheed Martin Corporation

发明人： GAUS, Richard, C., Jr. ,  AL-DHAHIR, Naofal

IPC分类号： H04R3/00

CPC分类号： H04L25/03044 ,  H04B7/086 ,  H04L2025/03509

摘要： Filter coefficients of a beamformer (100) are computed based on a segment of input samples. The segment of input samples is divided into a plurality of blocks of input samples wherein the plurality of blocks of input samples are received by a shared memory at a first rate. The first block of the plurality of blocks is received in the shared memory at a first time. The plurality of blocks of input samples from the shared memory are read out at a second rate wherein the first block of the plurality of blocks is read from the shared memory at a second time. A plurality of partial covariance matrices for the plurality of blocks read from the shared memory are computed and added together to determine a covariance matrices used to compute the filter coefficients.