发明名称 Multistage interference canceller for a code division multiple access communications system
摘要 <p>Each of path search unit 41...4N performs a path-searching on a received signal rin to output a primary path timing signal 8 indicating primary path timings. Each of IEUs 11...1N in a first stage performs a despreading or the like on the basis of the primary path timing signal 8 to generate a symbol replica signal 51 and a chip replica signal 6. Subtractor 31 subtracts the sum of chip replica signals 6 from the received signal rin to generate a residual signal 7. Each of path search units 41...4N performs a path-searching on the residual signal 7, and outputs a secondary path signal 9 indicating secondary path timings. A primary path timing of which SIR is low and which has a temporary secondary path timing which is near to the primary path timing is not selected as a secondary path timing but the corresponding temporary secondary path is selected as the secondary path timing. A primary path timing of which SIR is not low or which does not have a temporary secondary path timing which is near to the primary path timing is selected as a secondary path timing. Each of IEUs 11...1N in the second and the following stages performs a despreading or the like on the basis of the secondary path timing signal 9. <IMAGE></p>
申请公布号 EP1049263(A2) 申请公布日期 2000.11.02
申请号 EP20000108004 申请日期 2000.04.19
申请人 NEC CORPORATION 发明人 ISHII, TATSUYA
分类号 H04J13/00;H04B1/10;H04B1/7107;(IPC1-7):H04B1/707 主分类号 H04J13/00
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