| Presentation | 2010-11-11 PAPR Reduction Method Based on Significant-Bit Scrambling in Adaptive Modulated MIMO Vector Coding Systems Yasuto ANDO, Osamu MUTA, Hiroshi FURUKAWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In high speed wireless transmission, inter-symbol interference (ISI) caused in a frequency-selective channel severely degrades bit error rate (BER) performance. As a method to overcome frequency selectivity in wireless channel, vector coding (VC) transmission has been studied. VC is a kind of code-division multiplexing (CDM) where eigenvectors of channel autocorrelation matrix are used as spreading code, and VC needs to adopt an adaptive modulation to enhance transmission performance. A major drawback of the VC is that the transmit signal exhibits high peak-to average power ratio (PAPR) which causes nonlinear distortion and/or power efficiency degradation at power amplifier, similarly to OFDM and CDM systems. As a method to solve this problem, an SLM method with a self-synchronized scrambler (SLM-SS) has been studied. However, on the receiver side, it is needed to restore the original constellation data mapping to obtain information data. In this paper, we propose an SLM-SS method with the significant-bit scrambling for adaptive modulated VC transmission systems, where only most significant bits of I- and Q-phase of each modulated symbol are scrambled to reduce PAPR. Simulation results show that BER degradation caused by error propagation is effectively mitigated, while achieving almost the same PAPR reduction performance as conventional SLM-SS method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Vector coding / Adaptive modulation / PAPR reduction / Selected mapping / Significant bit scrambling |
| Paper # | RCS2010-144 |
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| Committee | RCS |
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| Conference Date | 2010/11/4(1days) |
| Place (in Japanese) | (See Japanese page) |
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| 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) | PAPR Reduction Method Based on Significant-Bit Scrambling in Adaptive Modulated MIMO Vector Coding Systems |
| Sub Title (in English) | |
| Keyword(1) | Vector coding |
| Keyword(2) | Adaptive modulation |
| Keyword(3) | PAPR reduction |
| Keyword(4) | Selected mapping |
| Keyword(5) | Significant bit scrambling |
| 1st Author's Name | Yasuto ANDO |
| 1st Author's Affiliation | Graduate School of Information Science and Electrical Engineering, Kyushu University() |
| 2nd Author's Name | Osamu MUTA |
| 2nd Author's Affiliation | Center for Japan-Egypt Cooperation in Science and Technology, Kyushu University |
| 3rd Author's Name | Hiroshi FURUKAWA |
| 3rd Author's Affiliation | Graduate School of Information Science and Electrical Engineering, Kyushu University |
| Date | 2010-11-11 |
| Paper # | RCS2010-144 |
| Volume (vol) | vol.110 |
| Number (no) | 268 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |