Paper Abstract and Keywords |
Presentation |
2012-07-26 13:45
A Study on Semi-Blind Interference Alignment Exploiting Frequency Selectivity of Fading Channels Manato Takai (Shizuoka Univ.), Koji Ishibashi (Univ. Electoro-Communications), Won-Yong Shin (Dankook Univ.), Akihisa Yokoyama (TOYOTA InfoTechnology Center), Tadahiro Wada (Shizuoka Univ.) WBS2012-23 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In this paper, we focus on a X channel; a system with two transmitters, two receivers, each equipped with a single antenna, where independent messages need to be conveyed over channels from each transmitter to each receiver. A key concept of that arises in the context of the X channel is interference alignment (IA) that refers to an overlap of signal spaces occupied by undesired interference at each receiver while keeping desired signal spaces distinct. However, all the channel responses and the precise time synchronization are required at the transmitters, which are practically demanding. In this paper, we propose semi-blind IA (S-BIA) scheme exploiting frequency selectivity of wireless channels using orthogonal frequency division multiplexing (OFDM), which only requires channel responses corresponding to each transmitter, and show that it can achieve the same degrees of freedom as conventional IA via computer simulations. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Interference Alignment (IA) / distributed network / X Channel / frequency selective channel / orthogonal frequency division multiplexing(OFDM) / / / |
Reference Info. |
IEICE Tech. Rep., vol. 112, no. 147, WBS2012-23, pp. 73-78, July 2012. |
Paper # |
WBS2012-23 |
Date of Issue |
2012-07-18 (WBS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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WBS2012-23 |
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