Presentation | 2015-12-17 [Poster Presentation] A Study on Blind Channel Estimation by EM Algorithm for OFDM Systems Hirokazu Abe, Masahiro Fujii, Takanori Iwamatsu, Hiroyuki Hatano, Atsushi Ito, Yu Watanabe, |
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PDF Download Page | PDF download Page Link |
Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | It is necessary to estimate the channel state information coherently to equalize the received signal in wireless communication systems.When the channel estimator uses pilot symbols known at the receiver, the pilot symbols degrade the transmission efficiency because they need the signal spaces and the energy.In this paper, we assume a fixed microwave system in which the channel, whose time-variation is very slow, is in line of sight, and propose a new blind channel estimation method without the pilot symbols for OFDM systems.The proposed estimator makes use of the Expectation-Maximization algorithm and the correlation among the channel frequency responses by considering the assumed channel environment.By computer simulations, we show that the proposed estimator can asymptotically achieve the bit error rate using the ideal channel estimate. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Blind channel estimation / OFDM / EM algorithm / Channel frequency response correlation |
Paper # | WBS2015-53,ITS2015-25,RCC2015-55 |
Date of Issue | 2015-12-10 (WBS, ITS, RCC) |
Conference Information | |
Committee | RCC / ITS / WBS |
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Conference Date | 2015/12/17(2days) |
Place (in Japanese) | (See Japanese page) |
Place (in English) | Okinawa Industry Support Center |
Topics (in Japanese) | (See Japanese page) |
Topics (in English) | ITS Communications, Reliable Communication, etc. Poster Session. |
Chair | Masaaki Katayama(Nagoya Univ.) / Tomotaka Nagaosa(Kanto Gakuin Univ.) / Hiromasa Habuchi(Ibaraki Univ.) |
Vice Chair | Shinsuke Hara(Osaka City Univ.) / Ryu Miura(NICT) / Masahiro Fujii(Utsunomiya Univ.) / Tomotaka Wada(Kansai Univ.) / Fumiaki Maehara(Waseda Univ.) / Minoru Okada(NAIST) |
Secretary | Shinsuke Hara(Kyoto Univ.) / Ryu Miura(Hokkaido Univ.) / Masahiro Fujii(AIST) / Tomotaka Wada(Utsunomiya Univ.) / Fumiaki Maehara(Univ. of Kitakyushu) / Minoru Okada(Tokyo City Univ.) |
Assistant | Koji Ishii(Kagawa Univ.) / Kentaro Kobayashi(Nagoya Univ.) / Kohei Ohno(Meiji Univ.) / Tetsuya Manabe(Saitama Univ.) / Yusuke Kozawa(Tokyo Univ. of Science) / Akira Nakamura(Tokyo Univ. of Science) / Ryohei Nakamura(National Defense Academy) |
Paper Information | |
Registration To | Technical Committee on Reliable Communication and Control / Technical Committee on Intelligent Transport Systems Technology / Technical Committee on Wideband System |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | [Poster Presentation] A Study on Blind Channel Estimation by EM Algorithm for OFDM Systems |
Sub Title (in English) | |
Keyword(1) | Blind channel estimation |
Keyword(2) | OFDM |
Keyword(3) | EM algorithm |
Keyword(4) | Channel frequency response correlation |
1st Author's Name | Hirokazu Abe |
1st Author's Affiliation | Utsunomiya University(Utsunomiya Univ.) |
2nd Author's Name | Masahiro Fujii |
2nd Author's Affiliation | Utsunomiya University(Utsunomiya Univ.) |
3rd Author's Name | Takanori Iwamatsu |
3rd Author's Affiliation | Fujitsu Telecom Networks Limited(Fujitsu Telecom Networks) |
4th Author's Name | Hiroyuki Hatano |
4th Author's Affiliation | Utsunomiya University(Utsunomiya Univ.) |
5th Author's Name | Atsushi Ito |
5th Author's Affiliation | Utsunomiya University(Utsunomiya Univ.) |
6th Author's Name | Yu Watanabe |
6th Author's Affiliation | Utsunomiya University(Utsunomiya Univ.) |
Date | 2015-12-17 |
Paper # | WBS2015-53,ITS2015-25,RCC2015-55 |
Volume (vol) | vol.115 |
Number (no) | WBS-364,ITS-365,RCC-366 |
Page | pp.pp.79-84(WBS), pp.79-84(ITS), pp.79-84(RCC), |
#Pages | 6 |
Date of Issue | 2015-12-10 (WBS, ITS, RCC) |