| Presentation | 2015-06-26 A Study on Approximated LLR Computation for Space Time Block Code and Forward Error Correction Code in Presence of Phase Noise Makoto Nishikori, Shinsuke Ibi, Seiichi Sampei, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a computation method of log likelihood ratio (LLR) of frequency domain equalizer (FDE) output in presence of phase noise for single carrier millimeter-wave (mmW) transmissions with low density parity check (LDPC) coded space-time block code (STBC). In mmW systems, local oscillators at both transmitter and receiver are suffering from severe phase noise while operating much higher frequency bands. In order to mitigate the impairment of phase noise, STBC and forward error correction (FEC), such as LDPC, techniques are effective tools. However, if the probabilistic model does not capture exact behavior of a random process on received signal, the capability of FEC is severely deteriorated. To address this issue, we appropriately define approximated LLR of FDE output for LDPC coded STBC. We have demonstrated that the derived LLR is capable of improving bit error rate (BER) performances in the presence of phase noise. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | log likelihood ratio / phase noise / millimeter wave / space-time block code / frequency domain equalizer |
| Paper # | RCS2015-94 |
| 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 | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Approximated LLR Computation for Space Time Block Code and Forward Error Correction Code in Presence of Phase Noise |
| Sub Title (in English) | |
| Keyword(1) | log likelihood ratio |
| Keyword(2) | phase noise |
| Keyword(3) | millimeter wave |
| Keyword(4) | space-time block code |
| Keyword(5) | frequency domain equalizer |
| 1st Author's Name | Makoto Nishikori |
| 1st Author's Affiliation | Osaka University(Osaka Univ.) |
| 2nd Author's Name | Shinsuke Ibi |
| 2nd Author's Affiliation | Osaka University(Osaka Univ.) |
| 3rd Author's Name | Seiichi Sampei |
| 3rd Author's Affiliation | Osaka University(Osaka Univ.) |
| Date | 2015-06-26 |
| Paper # | RCS2015-94 |
| Volume (vol) | vol.115 |
| Number (no) | RCS-113 |
| Page | pp.pp.281-286(RCS), |
| #Pages | 6 |
| Date of Issue | 2015-06-17 (RCS) |