| Presentation | 2006-01-26 Subcarrier-Phase Hopping MIMO-OFDM Transmission Systems with Phase Pattern Control for PAPR Reduction Naoji NOMURA, Satoshi SUYAMA, Hiroshi SUZUKI, Kazuhiko FUKAWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This report proposes a peak-to-average power ratio (PAPR) reduction method optimizing a pattern of the phase hopping in MIMO-OFDM transmission with the subcarrier phase hopping for space division multiplexing (SPH-SDM). An efficient PAPR reduction method is essential in MIMO-OFDM transmission because a larger number of transmit antennas increases PAPR of the signal waveform more than that of SISO-OFDM transmission. This report proposes an enhanced selected mapping (ESLM) to SPH-SDM, which transforms the modulation signals by a selected phase pattern for total peak power reduction. Furthermore, ESLM includes a method to reduce the numerical complexity by quantizing the IFFT processing which is required for selecting the optimum phase pattern, and that to transmit the selected phase pattern efficiently to the receiver by using the pilot subcarriers. SPH-SDM with ESLM can improve the frequency diversity gain due to channel coding, and improves the PAPR characteristics by selecting a phase pattern that can suppress the peak power. Computer simulation shows the relationship between the desired PAPR and various parameters such as the number of phase patterns and the level of quantization. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile communication / MIMO-OFDM / phase hopping / PAPR / phase pattern control / IFFT / quantization |
| Paper # | RCS2005-136 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2006/1/19(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) | Subcarrier-Phase Hopping MIMO-OFDM Transmission Systems with Phase Pattern Control for PAPR Reduction |
| Sub Title (in English) | |
| Keyword(1) | Mobile communication |
| Keyword(2) | MIMO-OFDM |
| Keyword(3) | phase hopping |
| Keyword(4) | PAPR |
| Keyword(5) | phase pattern control |
| Keyword(6) | IFFT |
| Keyword(7) | quantization |
| 1st Author's Name | Naoji NOMURA |
| 1st Author's Affiliation | Tokyo Institute of Technology() |
| 2nd Author's Name | Satoshi SUYAMA |
| 2nd Author's Affiliation | Tokyo Institute of Technology |
| 3rd Author's Name | Hiroshi SUZUKI |
| 3rd Author's Affiliation | Tokyo Institute of Technology |
| 4th Author's Name | Kazuhiko FUKAWA |
| 4th Author's Affiliation | Tokyo Institute of Technology |
| Date | 2006-01-26 |
| Paper # | RCS2005-136 |
| Volume (vol) | vol.105 |
| Number (no) | 559 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |