| Presentation | 2016-03-04 Interference Alignment for Time-Varying Channel with Low Complexity Channel Prediction based on Auto Regressive Model Masayoshi Ozawa, Tomoaki Ohtsuki, Wenjie Jiang, Yasushi Takatori, Tadao Nakagawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Interference alignment (IA) is a interference suppression technique with a few number of antennas by aligning interference signals using transmit weights. Although weights are calculated based on channel state information (CSI) fed back from each receiver, weights based on delayed channels can not align them due to time-varying channel. Therefore, IA with a channel prediction is gathering attention. Auto regressive (AR) model is a prediction method that predicts the future state based on past states. However, the calculation amount is large. In this report, we propose a low complexity and high accuracy channel prediction based on AR model and apply it to IA. We use differences of channels between adjacent time to predict future channel. Past channels are used directly in conventional IA with channel prediction. However, the prediction error becomes small when the future channel is predicted with differences of channels between adjacent time. Through computer simulation, IA with the proposed channel prediction is shown to improve the channel prediction accuracy, reduce the calculation amount, and improve the transmission rate. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Interference alignment / Channel prediction / Auto regressive model |
| Paper # | RCS2015-381 |
| Date of Issue | 2016-02-24 (RCS) |
| Conference Information | |
| Committee | RCS / CCS / SR / SRW |
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| Conference Date | 2016/3/2(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Chair | Makoto Taromaru(Fukuoka Univ.) / Hiroo Sekiya(Chiba Univ.) / Takeo Fujii(Univ. of Electro-Comm.) / Hiroshi Harada(Kyoto Univ.) |
| Vice Chair | Hidekazu Murata(Kyoto Univ.) / Satoshi Denno(Okayama Univ.) / Yukitoshi Sanada(Keio Univ.) / Yasuhiro Tsubo(Ritsumeikan Univ.) / Naoki Wakamiya(Osaka Univ.) / Kenta Umebayashi(Tokyo Univ. of Agric. and Tech.) / Masayuki Ariyoshi(NEC) / Masafumi Kato(Fujitsu) / Satoshi Denno(Okayama Univ.) |
| Secretary | Hidekazu Murata(Mitsubishi Electric) / Satoshi Denno(NTT DoCoMo) / Yukitoshi Sanada(Kagawa National College of Tech.) / Yasuhiro Tsubo(Kyoto Sangyo Univ.) / Naoki Wakamiya(Shinshu Univ.) / Kenta Umebayashi(NICT) / Masayuki Ariyoshi(NTT) / Masafumi Kato(NICT) / Satoshi Denno |
| Assistant | Jun Mashino(NTT) / Tetsuya Yamamoto(Panasonic) / Takamichi Inoue(NEC) / Tomoya Tandai(Toshiba) / Toshihiko Nishimura(Hokkaido Univ.) / Takayuki Kimura(Nippon Inst. of Tech.) / Song-Ju Kim(NIMS) / Ryo Takahashi(Kyoto Univ.) / Junnosuke Teramae(Osaka Univ.) / Kazuto Yano(ATR) / Mamiko Inamori(Tokai Univ.) / Hiroyuki Shiba(NTT) / Gia Khanh Tran(Tokyo Inst. of Tech.) / Wen Yun(Fujitsu) / Keiichi Mizutani(Kyoto Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Complex Communication Sciences / Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Interference Alignment for Time-Varying Channel with Low Complexity Channel Prediction based on Auto Regressive Model |
| Sub Title (in English) | |
| Keyword(1) | Interference alignment |
| Keyword(2) | Channel prediction |
| Keyword(3) | Auto regressive model |
| 1st Author's Name | Masayoshi Ozawa |
| 1st Author's Affiliation | Keio Univercity(Keio Univ.) |
| 2nd Author's Name | Tomoaki Ohtsuki |
| 2nd Author's Affiliation | Keio Univercity(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 | Tadao Nakagawa |
| 5th Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| Date | 2016-03-04 |
| Paper # | RCS2015-381 |
| Volume (vol) | vol.115 |
| Number (no) | RCS-472 |
| Page | pp.pp.279-284(RCS), |
| #Pages | 6 |
| Date of Issue | 2016-02-24 (RCS) |