Carrier-wave recovering method for time-domain synchronous orthogonal frequency-division duplex receiver and system thereof |
Title： |
| Carrier-wave recovering method for time-domain synchronous orthogonal frequency-division duplex receiver and system thereof |
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Application Number： |
200410003486 |
Application Date： |
2004/03/31 |
Announcement Date： |
2005/10/05 |
Pub. Date： |
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Publication Number： |
1677911 |
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： |
H04J 11/00, H04N 7/015, H04L 27/32 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Yang Zhixing, Yang Lin |
Key Words： |
Carrier-wave recovering, time-domain synchronous, orthogonal frequency-division duplex, receiver |
Abstract： |
Carrier frequency estimation is completed in three phases: (1) receiver carries out coarse frequency estimation, (CFE) in order to locate frequency deviation correction within a small region; (2) non coherent auto frequency estimation (AFC) is carried out under obtained timing information is not completed; (3) coherent AFC is carried out under obtained timing information is completed i.e. the receiver enters into locking state, carrier frequency correction of data is completed by using a tracking loop in first order. The invention is realized at FPGA of Tsinghua DMB - T, ASIC version receiver. Favorable effect is obtained through actual try out broadcasting and testing, and performance is better than existing other system evidently. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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