| Presentation | 2012-03-09 Application of Interference Alignment to Inter-Vehicle Communications with Simultaneous Multi-User Transmission and Its Performance Evaluation Takayuki SHIMIZU, Akihisa YOKOYAMA, Hisato IWAI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Interference alignment (IA) is a transmission technique that achieves the maximum multiplexing gain of multiple-input multiple-output (MIMO) interference channels, where multiple pairs of transmitters and receivers communicate simultaneously. In conventional IA in the spatial domain, the number of terminals is limited by the number of antennas of each terminal, and therefore the multiplexing gain and the sum rate performance are upper-bounded. This paper shows that when IA is applied to inter-vehicle communications at an intersection, we can improve the sum rate performance of the conventional IA by taking into account the effect of path loss. In this paper, we consider MIMO interference channels with two IA groups, where all interference signals from the same group are aligned at each receiver by virtue of IA, but interference signals from the other group are not. Through numerical simulations, we evaluate the achievable sum rate in an inter-vehicle communication system where there are two IA groups around an intersection. We show that the achievable sum rate can be significantly improved by two-group interference alignment, compared with that of single-group interference alignment. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | interference alignment / inter-vehicle communications / ITS / MIMO interference channel |
| Paper # | RCS2011-358 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2012/2/29(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| 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) | Application of Interference Alignment to Inter-Vehicle Communications with Simultaneous Multi-User Transmission and Its Performance Evaluation |
| Sub Title (in English) | |
| Keyword(1) | interference alignment |
| Keyword(2) | inter-vehicle communications |
| Keyword(3) | ITS |
| Keyword(4) | MIMO interference channel |
| 1st Author's Name | Takayuki SHIMIZU |
| 1st Author's Affiliation | Graduate School of Engineering, Doshisha University() |
| 2nd Author's Name | Akihisa YOKOYAMA |
| 2nd Author's Affiliation | TOYOTA Info Technology Center, U.S.A., Inc. |
| 3rd Author's Name | Hisato IWAI |
| 3rd Author's Affiliation | Graduate School of Engineering, Doshisha University |
| Date | 2012-03-09 |
| Paper # | RCS2011-358 |
| Volume (vol) | vol.111 |
| Number (no) | 451 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |