Frequency division multiple address access method of time-domain synchronous orthogonal frequency division multiplexing system |
Title： |
| Frequency division multiple address access method of time-domain synchronous orthogonal frequency division multiplexing system |
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Application Number： |
200710176163 |
Application Date： |
2007/10/22 |
Announcement Date： |
2008/03/05 |
Pub. Date： |
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Publication Number： |
101136897 |
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, H04J 11/00 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Yang Zhihang, Du Dengbao, Wang Jun, Wang Jintao, Song Jian |
Key Words： |
Frequency division multiple address, access,time-domain synchronous, OFDM system |
Abstract： |
The method includes steps: repeating the training sequence with length as NS utilized by any user in system of time domain synchronization-orthogonal frequency division multiplexing (TDS-OFDM) for NT times to generate first training sequence; NT is as number of users in system of TDS-OFDM; multiplying each element in first training sequence by first phase rotation factor so as to obtain second training sequence; repeating the data sequence with length as ND sent from user for NT times to generate first data sequence; multiplying each element in first data sequence by second phase rotation factor so as to obtain second data sequence; forming signal frame composed of second training sequence as guard spaces and second data sequence. The invention eliminates mutual interference among multi users in system of TDS-OFDM. |
Claim： |
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PCT： |
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