发明授权
- 专利标题: Delay lock loops for wireless communication systems
- 专利标题(中): 用于无线通信系统的延迟锁定环路
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申请号: US11368115申请日: 2006-03-03
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公开(公告)号: US07817760B2公开(公告)日: 2010-10-19
- 发明人: Peter J. Black , Nagabhushana T. Sindhushayana
- 申请人: Peter J. Black , Nagabhushana T. Sindhushayana
- 申请人地址: US 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: US CA San Diego
- 代理商 Larry J. Moskowitz
- 主分类号: H04L7/00
- IPC分类号: H04L7/00
摘要:
Techniques for deriving sample timing for multiple signal instances received on multiple antennas for a given propagation path. In one scheme, a DLL is maintained for each path, and each DLL tracks the timing of the best signal instance for the assigned path. In another scheme, a DLL is maintained for each path, and each DLL tracks the average timing of the multiple signal instances for the assigned path. To reduce timing jitter, the SINR of a signal instance may be estimated for a number of different time offsets. The loop filter for the DLL is initially updated in the normal manner. If a change in the time offset used for the sample timing is detected, then the SINRs for the new and prior offsets are compared. The new time offset is used if the associated SINR is better. Otherwise, the prior time offset is retained and used.
公开/授权文献
- US20060146918A1 Delay lock loops for wireless communication systems 公开/授权日:2006-07-06
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