| Presentation | 2005-06-17 A Peak Power Reduction Scheme based on Adaptive Reversal of Clustered Parity-Carriers for a Turbo-coded OFDM signal Osamu MUTA, Yoshihiko AKAIWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose a peak power reduction (PPR) scheme based on adaptive reversal of clustered parity-carriers for a turbo-coded OFDM signal. In our PPR scheme, the parity-carriers where parity-bits of turbo encoder output are allocated are grouped into several clusters. Peak power can be reduced by adaptively reversing the phase of each cluster so as to minimize PAPR of OFDM signal after combining data- and parity-carriers, symbol-by-symbol. The proposed PPR scheme does not send any side information to the receiver for peak reduction. At the receiver, the reversal of parity-bits is iteratively estimated with a sufficient accuracy by observing the extrinsic information of component decoder. When a turbo-code of K=4 and R=1/2 is employed, PAPR of OFDM signal at the CCDF (complementary cumulative distribution function) of 10^<-4> can be reduced by about 2dB by applying PPR scheme that achieves approximately the same BER performance as the case of ideal decoding in attenuated 12-path Rayleigh fading condition. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / Peak-to-average power ratio / Peak power reduction / Turbo-code / Reversal of parity-bits |
| Paper # | RCS2005-30 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2005/6/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Peak Power Reduction Scheme based on Adaptive Reversal of Clustered Parity-Carriers for a Turbo-coded OFDM signal |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | Peak-to-average power ratio |
| Keyword(3) | Peak power reduction |
| Keyword(4) | Turbo-code |
| Keyword(5) | Reversal of parity-bits |
| 1st Author's Name | Osamu MUTA |
| 1st Author's Affiliation | Kyushu University Graduate School of Information Science and Electrical Engineering() |
| 2nd Author's Name | Yoshihiko AKAIWA |
| 2nd Author's Affiliation | Kyushu University Graduate School of Information Science and Electrical Engineering |
| Date | 2005-06-17 |
| Paper # | RCS2005-30 |
| Volume (vol) | vol.105 |
| Number (no) | 121 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |