Invention Grant
- Patent Title: Channel estimation system and method
- Patent Title (中): 信道估计系统和方法
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Application No.: US11789180Application Date: 2007-04-24
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Publication No.: US07830994B2Publication Date: 2010-11-09
- Inventor: Haim Primo , Yosef Stein , Wei An
- Applicant: Haim Primo , Yosef Stein , Wei An
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Goodwin Procter LLP
- Main IPC: H03D1/04
- IPC: H03D1/04 ; H03D1/06 ; H03K5/01 ; H03K6/04 ; H04B1/10 ; H04L1/00 ; H04L25/08

Abstract:
Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; storing the average channel impulse responses for the identified channel path delays; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol stream and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data; and subtracting the reconstructed inter-channel interference noise from the OFDM symbol stream to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise.
Public/Granted literature
- US20080095275A1 Channel estimation system and method Public/Granted day:2008-04-24
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