Invention Grant
- Patent Title: Timing adjustments for channel estimation in a multi carrier system
- Patent Title (中): 多载波系统中信道估计的时序调整
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Application No.: US11777251Application Date: 2007-07-12
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Publication No.: US08098567B2Publication Date: 2012-01-17
- Inventor: Matthias Brehler , Joseph Chan
- Applicant: Matthias Brehler , Joseph Chan
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Gerald P. Joyce, III
- Main IPC: H04J11/00
- IPC: H04J11/00

Abstract:
Apparatus and methods are provided for making timing adjustments in a multi carrier communications system. In an aspect, a timing correction method is provided for a multi-carrier system. This includes adjusting the time basis of two or more pilot interlaces with respect to each other in order to account for timing differences between the interlaces when combining the interlaces, and then adjusting or matching the time bases of the combined interlaces with a symbol to be demodulated. The alignment and matching is performed in order to generate channel estimates for data demodulation. The channel estimates, thus generated, along with the timing alignment information are in turn used for determining timing corrections to be applied to demodulation of a particular symbol. Corresponding apparatus are also disclosed that implement the methodology.
Public/Granted literature
- US20080219144A1 TIMING ADJUSTMENTS FOR CHANNEL ESTIMATION IN A MULTI CARRIER SYSTEM Public/Granted day:2008-09-11
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