| Presentation | 2015-08-18 Complexity Reduction of Pico Cell Clustering for Interference Alignment in Heterogeneous Networks Ryuma Seno, Tomoaki Ohtsuki, Wenjie Jiang, Yasushi Takatori, Kazuhiro Uehara, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Interference alignment (IA) in heterogeneous networks (HetNets) is a promising technique that improves thespectral efficiency significantly. We showed in [1] that transmit antennas at pico base stations (BSs) could be utilized moreefficiently by clustering pico cells in IA in HetNet where the clustering formation was optimized so as to minimize the rate losscaused by inter-cluster interference. In [1], the optimum clustering formation is selected by comparing all possible formations, that is, the value of the objective function for all possible formations is calculated. Therefore, the enormous complexity toconstruct pico cell clusters is required. In this report, we propose a novel algorithm for clustering pico cells that reduces thecomplexity of the clustering process. In particular, we define rate-loss matrix that represents the rate loss caused by inter-picointerference, and translate the optimization problem to the construction of rate-loss matrix. Although the proposed algorithmis sub-optimum in terms of achievable rate compared to all-search algorithm used in [1], the simulation results show that thedifference of achievable rate between the proposed algorithm and all-search algorithm is negligible and becomes smaller asthe cluster size decreases. We evaluate the complexity of proposed algorithm quantitatively comparing to all-search algorithm, and show that our algorithm reduces the complexity of clustering process significantly while achieving almost same performance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | |
| Paper # | RCS2015-153 |
| Date of Issue | 2015-08-10 (RCS) |
| Conference Information | |
| Committee | RCS / SAT |
|---|---|
| Conference Date | 2015/8/17(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Fukuoka Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Satellite Communications, Broadcasting, Error Correction, Wireless Communication Systems, etc. |
| Chair | Makoto Taromaru(Fukuoka Univ.) / Morio Toyoshima(NICT) |
| Vice Chair | Hidekazu Murata(Kyoto Univ.) / Satoshi Denno(Okayama Univ.) / Yukitoshi Sanada(Keio Univ.) / Takatoshi Sugiyama(Kogakuin Univ.) / Toshinori Susuki(Tohoku Gakuin Univ.) |
| Secretary | Hidekazu Murata(Mitsubishi Electric) / Satoshi Denno(NTT DoCoMo) / Yukitoshi Sanada(NICT) / Takatoshi Sugiyama(NTT) / Toshinori Susuki |
| 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 / Technical Committee on Satellite Telecommunications |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Complexity Reduction of Pico Cell Clustering for Interference Alignment in Heterogeneous Networks |
| Sub Title (in English) | |
| Keyword(1) | |
| Keyword(2) | |
| Keyword(3) | |
| Keyword(4) | |
| 1st Author's Name | Ryuma Seno |
| 1st Author's Affiliation | Keio University(Keio Univ.) |
| 2nd Author's Name | Tomoaki Ohtsuki |
| 2nd Author's Affiliation | Keio University(Keio Univ.) |
| 3rd Author's Name | Wenjie Jiang |
| 3rd Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 4th Author's Name | Yasushi Takatori |
| 4th Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 5th Author's Name | Kazuhiro Uehara |
| 5th Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| Date | 2015-08-18 |
| Paper # | RCS2015-153 |
| Volume (vol) | vol.115 |
| Number (no) | RCS-181 |
| Page | pp.pp.123-128(RCS), |
| #Pages | 6 |
| Date of Issue | 2015-08-10 (RCS) |