Time-varying channel evaluation and equalizing method and system for TDS-OFDM receiver |
Title： |
| Time-varying channel evaluation and equalizing method and system for TDS-OFDM receiver |
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Application Number： |
200410009944 |
Application Date： |
2004/12/03 |
Announcement Date： |
2005/05/18 |
Pub. Date： |
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Publication Number： |
1617531 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H04L 27/26 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Yang Zhixing, Fu Jian, Pan Changyong |
Key Words： |
Time-varying channel, evaluation, equalizing method, system, TDS-OFDM receiver |
Abstract： |
This invention relates to TDS-OFDM receiver time-varying channel estimation and the balance method and system which assumes the channel varies in linearity in an OFDM block. Firstly a channel response estimation at the PN of each OFDM block is got by PN code time domain then to carry out linear interpolating in the OFDM block to get the entire channel response estimation. This invention puts forward a simplified balance method for complementing the balance matrix with ICI to carry out spreading of finite item power series, which greatly increases the receiving performance of TDS-OFDM receivers under time-varying channel and is better than the scheme of assuming the channel unchanged in an OFDM block. |
Claim： |
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Priority： |
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PCT： |
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