Invention Grant
- Patent Title: MIMO channel estimation in presence of sampling frequency offset
- Patent Title (中): 存在抽样频率偏移的MIMO信道估计
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Application No.: US11590062Application Date: 2006-10-30
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Publication No.: US07646823B2Publication Date: 2010-01-12
- Inventor: Rohit V. Gaikwad
- Applicant: Rohit V. Gaikwad
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Garlick Harrison & Markison
- Main IPC: H04B7/02
- IPC: H04B7/02

Abstract:
A technique to determine sampling frequency offset (SFO) phase shift and perform channel estimation for symbols of a signal communicated across a multiple-input-multiple-output (MIMO) communication channel, in which preambles utilized for channel estimation are sent over more than one time block. Because the transmission of preambles used for channel estimation are sent over multiple time blocks, a SFO phase shift that is linear across tones of an OFDM signal is experienced between preambles of the two time blocks. Upon detection of the SFO phase shift, a weighting matrix used for channel estimation is modified to account for the SFO phase shift, in order to perform the channel estimation with correction for the SFO phase shift.
Public/Granted literature
- US20080101495A1 MIMO channel estimation in presence of sampling frequency offset Public/Granted day:2008-05-01
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