发明授权
- 专利标题: Lock detection for multipath wireless receiver
- 专利标题(中): 多路径无线接收机的锁定检测
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申请号: US209356申请日: 1998-12-11
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公开(公告)号: US6130923A公开(公告)日: 2000-10-10
- 发明人: Jeffrey A. Levin , Christopher C. Riddle , Tom B. Sherman
- 申请人: Jeffrey A. Levin , Christopher C. Riddle , Tom B. Sherman
- 申请人地址: CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: CA San Diego
- 主分类号: H04B1/7115
- IPC分类号: H04B1/7115 ; H04B1/7117 ; H04B1/712 ; H04B7/26 ; H04L1/02
摘要:
A wireless receiver receiving multipath Wash-code symbols determines which of fingers 402, 410 have locked on a signal. Measurements of the correlation energies between the received signal and all possible symbols are stored in energy storage units 404, 412. The actual signals are combined in combiner 408. A maximum determiner 416 determines the most likely combined symbol, and an index for this symbol is fed back to the energy storage units. Lock detectors 406, 414 use the measurement for this fed-back symbol to determine whether the finger has locked onto a path. This determination is used to decide whether the next signal detected by that finger should be applied to the combiner.
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