Channel estimation method for TDS-OFDM system |
Title： |
| Channel estimation method for TDS-OFDM system |
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Application Number： |
200710175301 |
Application Date： |
2007/09/28 |
Announcement Date： |
2008/03/05 |
Pub. Date： |
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Publication Number： |
101136884 |
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 25/03, H04L 27/01, H04L 27/26 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Peng Kewu, Tang Shigang, Yang Zhihang, Pan Changyong, Song Jian |
Key Words： |
Channel estimation method, TDS-OFDM system |
Abstract： |
The method includes steps: using channel estimation (CE) result obtained from iteration at last time of previous frame or iteration at previous time of current frame as initial channel impulse response (CIR) for iteration at this time of current frame; based on CIR to remove interference on data block from pseudo random sequence (PRS), and carrying out circulating reconstruction for data block; equalizing the circulating reconstructed result, and carrying out partial judgment for equalized result; based on result of partial judgment and initial CIR to remove interference on PRS from data block, and carrying out circulating reconstruction for PRS; based on the circulating reconstructed result to re-estimate CIR, and considering the CIR as CE of iteration at this time of current frame. Carrying out partial judgment on data block of TDS-OFDM system to assist CE, the invention raises precision of CE, and reduces complexity of calculation. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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