| Presentation | 2010-03-05 Improvement of Power Added Efficiency by PAPR Reductiuon Technique for MIMO-OFDM Systems Yosuke KANNO, Satoshi SUYAMA, Hiroshi SUZUKI, Kazuhiko FUKAWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In MIMO-OFDM mobile communication systems, this report clarifies a relation between (i) an improvement of peak to average power ratio (PAPR) reduction by subcarrier phase hopping select mapping (SPH-SLM) and (ii) power added efficiency (PAE) of a transmit power amplifier (PA). Although MIMO-OFDM can realize the high-speed and reliable transmission, it suffers from high PAPR characteristics. For reducing such PAPR, SPH-SLM, which can improve both the transmission performance and the PAPR reduction of the transmitted signal, has been proposed. When the PAPR-reduced signal by SPH-SLM is passed into a nonlinear PA, computer simulations have evaluated the spectrum characteristic and the packet transmission performance. However, the improvement of PAE by SPH-SLM has not been clarified. This report shows a relation between the amount ofbackoff of PA and PAE by circuit simulations when the PAPR-reduced signal by SPH-SLM is fed into a Doherty PA. It also shows an effect of the PAPR reduction by SPH-SLM on out-of-band spectrum characteristics and error vector magnitude (EVM), and evaluates the transmission performance by a transmission system simulation that includes radio propagation channels. From the measured relation between the backoff, EVM, and PAE, it is shown that the PAPR reduction by SPH-SLM can improve PAE of 12% under the almost same EVM condition. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile communication / subcarrier phase hopping / PAPR / power added efficiency / RF circuit simulation |
| Paper # | RCS2009-331 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2010/2/24(1days) |
| Place (in Japanese) | (See Japanese page) |
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| 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) | Improvement of Power Added Efficiency by PAPR Reductiuon Technique for MIMO-OFDM Systems |
| Sub Title (in English) | |
| Keyword(1) | Mobile communication |
| Keyword(2) | subcarrier phase hopping |
| Keyword(3) | PAPR |
| Keyword(4) | power added efficiency |
| Keyword(5) | RF circuit simulation |
| 1st Author's Name | Yosuke KANNO |
| 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 | 2010-03-05 |
| Paper # | RCS2009-331 |
| Volume (vol) | vol.109 |
| Number (no) | 440 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |