| Presentation | 2015-06-25 An Study on Cost Functions in Adaptive Transmission Power Control Method Based on Soft FFR for Downlink OFDMA Daiki Nakajima, Kenichi Higuchi, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose a new cost functions for our previously reported adaptive transmission power control method based on soft fractional frequency reuse (SFR) for cellular downlink using orthogonal frequency division multiple access (OFDMA). Our previously reported method is a decentralized approach, in which a complicated inter-base station cooperation is not required, and adaptively controls the transmission power density at the protected and non-protected bands of SFR dependent on the user distribution within a cell, aiming at the maximization of the geometric mean of the user throughput (in other words, log sum of user throughput), thus, proportional fair (PF) criteria. While our previously reported method controls the transmission power density at the protected and non-protected bands with cost function proportional to transmission power to suppress unnecessary inter-cell interference, the proposed new cost function is based on the approximated cell-edge user throughput of neighbor cells. From the computer simulation results, we show that the proposed method reduces the variance of the user throughput within a system coverage, which means the improvement of user fairness, compared to the previously reported method, while the geometric mean of the user throughput is almost identical among two methods. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Downlink / Fractional frequency reuse / Inter-cell interference coordination / Transmission power control |
| Paper # | RCS2015-65 |
| Date of Issue | 2015-06-17 (RCS) |
| Conference Information | |
| Committee | RCS |
|---|---|
| Conference Date | 2015/6/24(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. |
| Chair | Makoto Taromaru(Fukuoka Univ.) |
| Vice Chair | Hidekazu Murata(Kyoto Univ.) / Satoshi Denno(Okayama Univ.) / Yukitoshi Sanada(Keio Univ.) |
| Secretary | Hidekazu Murata(Mitsubishi Electric) / Satoshi Denno(NTT DoCoMo) / Yukitoshi Sanada |
| Assistant | Jun Mashino(NTT) / Tetsuya Yamamoto(Panasonic) / Takamichi Inoue(NEC) / Tomoya Tandai(Toshiba) / Toshihiko Nishimura(Hokkaido Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Study on Cost Functions in Adaptive Transmission Power Control Method Based on Soft FFR for Downlink OFDMA |
| Sub Title (in English) | |
| Keyword(1) | Downlink |
| Keyword(2) | Fractional frequency reuse |
| Keyword(3) | Inter-cell interference coordination |
| Keyword(4) | Transmission power control |
| 1st Author's Name | Daiki Nakajima |
| 1st Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| 2nd Author's Name | Kenichi Higuchi |
| 2nd Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| Date | 2015-06-25 |
| Paper # | RCS2015-65 |
| Volume (vol) | vol.115 |
| Number (no) | RCS-113 |
| Page | pp.pp.113-118(RCS), |
| #Pages | 6 |
| Date of Issue | 2015-06-17 (RCS) |