发明名称 Use of adaptive filters in multiple access wireless systems employing predictable signals
摘要 A code division multiple access (CDMA) radio system uses an adaptive filter in a receiver to mitigate multipath radio propagation and to filter out interfering signals. Characteristics of an initial stage of the filter preferably are determined by cross correlation of a generated pilot signal and the input signal with the integration of the correlation performed over a time period selected to be an integral number of symbol periods. The integration causes the portions of the cross correlation corresponding to the user subchannels to average substantially to zero, so that the pilot channel signal correlation is the primary contribution to the signal used to characterize the channel to establish the coefficients of the adaptive filter for the receiver.
申请公布号 US7599426(B2) 申请公布日期 2009.10.06
申请号 US20040894913 申请日期 2004.07.19
申请人 ACORN TECHNOLOGIES, INC. 发明人 DESPAIN ALVIN M.
分类号 H04B1/00 主分类号 H04B1/00
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