发明名称 |
APPARATUS AND METHOD FOR INTERSYMBOL INTERFERENCE COMPENSATION IN SPREAD SPECTRUM COMMUNICATIONS |
摘要 |
<p>A communications signal representing symbols encoded according to respective portions of a spreading sequence is decoded. Time-offset correlations of the communications signal with the spreading sequence are generated. The time-offset correlations are combined to generate first estimates for the symbols. Intersymbol interference factors that include a relationship among different portions of the spreading sequence are determined, and a second estimate for one of the symbols is generated from the first estimates based on the determined intersymbol interference factors. An intersymbol interference factor may include a relationship between a first portion of the spreading sequence associated with the one symbol to a second portion of the spreading sequence associated with another symbol and may be determined, for example, from the spreading sequence and a channel estimate for a channel over which the communications signal is communicated. The invention may be embodied as methods and apparatus, for example, as a receiver included in a communications apparatus, such as a wireless terminal, wireless base station, or other wireless, wireline or optical communications apparatus.</p> |
申请公布号 |
WO03026145(A2) |
申请公布日期 |
2003.03.27 |
申请号 |
WO2001US49165 |
申请日期 |
2001.12.19 |
申请人 |
ERICSSON INC.;BOTTOMLEY, GREGORY, EDWARD;OTTOSSON, TONY;WANG, YI-PIN, ERIC |
发明人 |
BOTTOMLEY, GREGORY, EDWARD;OTTOSSON, TONY;WANG, YI-PIN, ERIC |
分类号 |
H04L25/03;(IPC1-7):H04B1/00 |
主分类号 |
H04L25/03 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|