Subband adaptive Turbo code modulation method under fixed throughput in OFDM |
Title： |
| Subband adaptive Turbo code modulation method under fixed throughput in OFDM |
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Application Number： |
200310113528 |
Application Date： |
2003/11/14 |
Announcement Date： |
2004/11/10 |
Pub. Date： |
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Publication Number： |
1545232 |
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： |
H03M 13/23H04J 11/00 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Zhou Shidong, Wang Jing, She Xiaoming |
Key Words： |
Turbo, code modulation, OFDM, fixed throughput, adaptive |
Abstract： |
The invention is an in-OFDM fixed throughput bottom subband self-adapting Turbo coding modulating method, a subband-by-subband variable power self-adapting method which adopts continuous block distributing mode at a constant throughput and object miscoding rate, i.e. in an OFDM symbol, different subbands has a different transmitting power but each subcarrier wave in the same subband has the same transmitting power; at the same time, the invention also provides a symbol-by-symbol variable power self-adapting method, but each subcarrier wave in the same subband has the same transmitting power. Each self-adapting coding block includes N.M adjacent subcarrier waves in M adjacent OFDM symbols in time domain, where N is number of subcarrier wave in a subband and it adopts continuous speed Turbo coding modulation in each subband. By this method, it can save transmitting power, reduce feedback expense and is easy to implement. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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