基本信息:
- 专利标题: IMPROVED CHANNEL ESTIMATION SYSTEM AND METHOD
- 申请号:PCT/US2007/022129 申请日:2007-10-17
- 公开(公告)号:WO2008048630A3 公开(公告)日:2008-04-24
- 发明人: PRIMO, Haim , STEIN, Yosef , AN, Wei
- 申请人: ANALOG DEVICES, INC. , PRIMO, Haim , STEIN, Yosef , AN, Wei
- 申请人地址: Three Technology Way Norwood, MA 02062 US
- 专利权人: ANALOG DEVICES, INC.,PRIMO, Haim,STEIN, Yosef,AN, Wei
- 当前专利权人: ANALOG DEVICES, INC.,PRIMO, Haim,STEIN, Yosef,AN, Wei
- 当前专利权人地址: Three Technology Way Norwood, MA 02062 US
- 代理机构: TESKA, Kirk, C. et al.
- 优先权: US60/852,607 20061018; US11/789,180 20070424
- 主分类号: H03D1/00
- IPC分类号: H03D1/00
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.