发明申请
- 专利标题: Channel estimation system and method
- 专利标题(中): 信道估计系统和方法
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申请号: US11789180申请日: 2007-04-24
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公开(公告)号: US20080095275A1公开(公告)日: 2008-04-24
- 发明人: Haim Primo , Yosef Stein , Wei An
- 申请人: Haim Primo , Yosef Stein , Wei An
- 主分类号: H04L27/00
- IPC分类号: H04L27/00
摘要:
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 steam 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.
公开/授权文献
- US07830994B2 Channel estimation system and method 公开/授权日:2010-11-09
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