发明名称 |
METHOD AND APPARATUS FOR PROVIDING DIFFERENTIAL MULTISTAGE DETECTION IN THE REVERSE LINK OF A CODE DIVISION MULTIPLE ACCESS COMMUNICATION SYSTEM |
摘要 |
The differencing multistage detector receives signals from a plurality of users in a cell of a communications system and reduces the effect of multiple access interference to a signal from a desired user caused by interference from other users in the cell. The differencing multistage detector includes a plurality of stages, each stage including an interference canceller for removing intra-cell interference caused by the other users in the cell and producing an estimation output vector, wherein except for a first stage, the estimation output vector of a current stage is based on both a decision of the interference canceller of the current stage and the output from an interference canceller of a previous stage. The estimation output vector of a current stage is produced by combining the output from an interference canceller of a previous stage and the decision of the interference canceller of the current stage. Except for the first stage each interference canceller calculates an estimate of multi-user interference by computing a product of a cross-correlation of the received signals and a difference signal thereby reducing the number of multiplication operations required.
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申请公布号 |
WO0072459(A1) |
申请公布日期 |
2000.11.30 |
申请号 |
WO2000US13530 |
申请日期 |
2000.05.18 |
申请人 |
AAZHANG, BEHNAAM;CAVALLARO, JOSEPH, R.;XU, GANG |
发明人 |
AAZHANG, BEHNAAM;CAVALLARO, JOSEPH, R.;XU, GANG |
分类号 |
H04J13/04;(IPC1-7):H04B1/707 |
主分类号 |
H04J13/04 |
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