Quadrature frequency division complex digita receiver |
Title： |
| Quadrature frequency division complex digita receiver |
|
Application Number： |
200410003499 |
Application Date： |
2004/04/02 |
Announcement Date： |
2005/01/12 |
Pub. Date： |
2007/08/22 |
Publication Number： |
1564468 |
Announcement Number： |
1333532 |
Grant Date： |
2007-8-22 |
Granted Pub. Date： |
2007-8-22 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H04B 1/16, H04J 11/00 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Ni Zuyao, Lu Jianhua, Pei Yukui |
Key Words： |
Quadrature frequency, division complex, digita receiver |
Abstract： |
The receiving set includes following parts: A/D converter of sampling in mid frequency converts received OFDM signal to OFDM data stream through bandpass sampling method; digit down-conversion and decimator carried out digit down-conversion processing for OFDM data stream and extracts up character rate; frame synchronization and frequency bias estimator picks up frame start location and frequency shift value through specified synchronization method; first frequency bias rectification device in froward direction adjusts phase of OFDM data; Fast Fourier Transform (FFT) device carries out FFT and outputs symbols of carrier waves; compensator and phase estimator compensates channel distortion and coarse value of frequency bias as well as detects increment of phase error of data symbol; second frequency bias rectification device adjusts phase symbol drift symbol of sub carrier wave. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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