Method for removing phase noise for time domain synchronous or thogonal frequency-division multiplex receiver and system and thereof |
Title： |
| Method for removing phase noise for time domain synchronous or thogonal frequency-division multiplex receiver and system and thereof |
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Application Number： |
200410003483 |
Application Date： |
2004/03/31 |
Announcement Date： |
2005/10/05 |
Pub. Date： |
2007/11/07 |
Publication Number： |
1677876 |
Announcement Number： |
100347962 |
Grant Date： |
2007-11-7 |
Granted Pub. Date： |
2007-11-7 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H04B 1/10, H04J 11/00 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Yang Zhixing, Yang Lin |
Key Words： |
remove, phase noise, time domain synchronous, thogonal frequency-division multiplex, receiver |
Abstract： |
The method includes procedures: separating received digital signal at receiving end; PN head in use for evaluating channel and TPS in signal frame body in use for evaluating phase noise; obtaining N pieces of TPS in M groups of TPS after carrying out discrete Fourier transform for signal frame body; selecting the TPS with largest amplitude, the selected TPS through extraction of band-pass filter, channel and phase noise interference being as received TPS; multiplying complex conjugate of TPS estimated value passed through channel transmission so as to obtain frequency domain baseband signal of phase noise. Finally, time domain evaluation of phase noise and phase compensation is obtained from discrete Fourier inverse transform. The method is capable of tracking phase transient of received signal at receiving end in time, removing phase noise, recovering system synchronization precisely. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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