Invention Grant
- Patent Title: Method and apparatus for compensating for processing timing misalignment in a communication receiver
- Patent Title (中): 用于补偿通信接收机中的处理定时未对准的方法和装置
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Application No.: US12111526Application Date: 2008-04-29
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Publication No.: US08045600B2Publication Date: 2011-10-25
- Inventor: Douglas A. Cairns , Stephen J. Grant , Andres Reial , Mathias Riback
- Applicant: Douglas A. Cairns , Stephen J. Grant , Andres Reial , Mathias Riback
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Coats & Bennett, P.L.L.C.
- Main IPC: H04B1/00
- IPC: H04B1/00

Abstract:
According to the teachings presented herein, a wireless communication apparatus compensates for timing misalignment in its received signal processing. In at least one embodiment, the apparatus estimates a set of path delays for a received signal and sets processing delays on the estimated path delays. The apparatus jointly hypothesizes combinations of fractional timing offsets for two or more paths, and computes a decision metric for each joint hypothesis that indicates the accuracy of the joint hypothesis. As non-limiting examples, the decision metric may be a signal quality metric, or a distance metric (such as between a measured net channel response and an effective net channel response reconstructed as a function of the combination of fractional timing offsets included in the joint hypothesis). The apparatus evaluates the decision metrics to identify a best estimate of timing misalignment, and correspondingly compensates coherent processing of the received signal.
Public/Granted literature
- US20090268787A1 Method and Apparatus for Compensating for Processing Timing Misalignment in a Communication Receiver Public/Granted day:2009-10-29
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