Presentation | 2015-06-25 A Riemannian Optimization Based Interference Alignment for Multi-User MIMO Interference Channels Fereidoun H. Panahi, Tomoaki Ohtsuki, Wenjie Jiang, Yasushi Takatori, |
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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 technique shown to be able to achieve a significant overall throughput in a K-user multiple-input multiple-output (MIMO) interference channel (IC). In this paper, we try to modify the conventional IA designs to achieve enhanced sum-rate performance. We jointly design transmit and receive IA filters (precoding and suppression filters) at a central unit (CU) to reduce the channel state information (CSI) feedback/sharing overhead. At the CU, in a one-way iterative strategy (left ‘L’ to right ‘R’, see Fig. 1), the precoding filters are optimized (on side ‘L’) in the direction of the gradient of the sum-rate, and the suppression filters are chosen (on side ‘R’) to minimize the leakage interferences. Then, in a two-way iterative strategy, the proposed scheme alternates between ‘L’ and ‘R’ sides to design the IA filters through the joint sum-rate maximization and interference leakage minimization on each side. Finally, a modified version of the two-way iterative strategy is proposed to design the IA filters on the basis of signal-to-interference-plus-noise ratio (SINR) (instead of the interference minimization) and the sum-rate maximization techniques. Comparing to other conventional IA designs, the proposed designs with provable convergence show a significant sum-rate performance improvement and often outperform other widely used algorithms, as shown in the simulation examples. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Interference Alignment (IA)Optimization ProblemIterative Algorithms |
Paper # | RCS2015-73 |
Date of Issue | 2015-06-17 (RCS) |
Conference Information | |
Committee | RCS |
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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 |
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Language | ENG |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | A Riemannian Optimization Based Interference Alignment for Multi-User MIMO Interference Channels |
Sub Title (in English) | |
Keyword(1) | Interference Alignment (IA)Optimization ProblemIterative Algorithms |
1st Author's Name | Fereidoun H. Panahi |
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) |
Date | 2015-06-25 |
Paper # | RCS2015-73 |
Volume (vol) | vol.115 |
Number (no) | RCS-113 |
Page | pp.pp.161-166(RCS), |
#Pages | 6 |
Date of Issue | 2015-06-17 (RCS) |