Reestablishment method of zero signal of frequency spectrum of channel of OFDM receiver and system |
Title： |
| Reestablishment method of zero signal of frequency spectrum of channel of OFDM receiver and system |
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Application Number： |
200510086686 |
Application Date： |
2005/10/21 |
Announcement Date： |
2007/04/25 |
Pub. Date： |
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Publication Number： |
1953436 |
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 University |
Inventor(s)： |
Yang Zhixing, Wang Jian, Pan Changyong, Song Jian, Wang Jun, Yang Lin |
Key Words： |
Reestablishment method, zero signal, frequency spectrum, channel, OFDM receiver, system |
Abstract： |
The invention relates to an OFDM receiver. Wherein, the invention is characterized in that it uses a function module at the FPGA chip or receiver ASIC, adds zero at two ends of received OFDM signal, to change it into frequency-domain signal, and balance the channel with division circuit, and delete the zero point of balanced signal via the noise threshold value set by zero circuit, and the amplified noise signal nearby it, to obtain rebuilt evaluated value of modulated mark. The invention can be used in all zero-full orthogonal frequency-division complex system with TDS-OFDM and relative equal method, to avoid pre-code and bandwidth waste. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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