| Presentation | 2017-06-22 Performance Improvement of Coded OFDM with Insufficient Cyclic Prefix Masaya Arakawa, Hideki Ochiai, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Orthogonal frequency-division multiplexing (OFDM) generally gains its resistance against channel delay spread by insertion of cyclic prefix (CP). In principle, the inter-symbol interference (ISI) can be avoided provided that the CP length is longer than that of the channel delay spread. However, the delay spread is not known a priori in general, and increase of CP length also decreases the spectral efficiency. In this work, under the framework of coded OFDM, we mitigate the degradation caused by the excessive channel delay spread by appropriately adjusting the metric that takes into account the resulting signal-to-interference-plus-noise ratio (SINR). Furthermore, we attempt to optimize the CP length such that the throughput is maximized. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / CP / LDPC code / SINR / throughput |
| Paper # | RCS2017-65 |
| Date of Issue | 2017-06-14 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2017/6/21(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Ishigaki Shoukou Kaikan |
| 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 | Tomoaki Otsuki(Keio Univ.) |
| Vice Chair | Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) |
| Secretary | Eisuke Fukuda(Hokkaido Univ.) / Satoshi Suyama(NTT) / Fumiaki Maehara |
| Assistant | Kazushi Muraoka(NTT DOCOMO) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) |
| 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) | Performance Improvement of Coded OFDM with Insufficient Cyclic Prefix |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | CP |
| Keyword(3) | LDPC code |
| Keyword(4) | SINR |
| Keyword(5) | throughput |
| 1st Author's Name | Masaya Arakawa |
| 1st Author's Affiliation | Yokohama national University(YNU) |
| 2nd Author's Name | Hideki Ochiai |
| 2nd Author's Affiliation | Yokohama national University(YNU) |
| Date | 2017-06-22 |
| Paper # | RCS2017-65 |
| Volume (vol) | vol.117 |
| Number (no) | RCS-103 |
| Page | pp.pp.91-96(RCS), |
| #Pages | 6 |
| Date of Issue | 2017-06-14 (RCS) |