| Presentation | 2001/11/12 An OFDM Receiver Scheme for Multipath Environments with Delay Profile over the Guard Interval Satoshi Suyama, Yoshitaka Hara, Hiroshi Suzuki, Yukiyoshi Kamio, Kazuhiko Fukawa, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | An OFDM transmission in mobile communications suffers severe performance degradation caused by large multipath delay difference over the Guard Interval (GI). This is the reason why the excess delay difference over GI results in considerable Inter-Symbol Interference (ISI) between temporally adjacent symbols and Inter-Carrier Interference (ICI) among subcarriers. This paper proposes a robust OFDM receiver that can effectively suppress both ISI and ICI. This proposed receiver consists of (1) Decision Feedback Equalization (DFE) for ISI, (2) Maximum Likelihood Sequence Estimation (MLSE) that can suppress ICI from the output of DFE and estimate transmitted signals, (3) FFT with smoothed FFT-window that is capable of reducing the number of states of MLSE drastically, and (4) an accurate channel estimation by Recursive Least Squares. First, this paper introduces a configuration of processing units in this receiver and how they are working. Next, computer simulation is conducted in 5 GHz band wireless LAN format in order to verify the performance of the proposed OFDM receiver, and its effectiveness is shown. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile Communication / OFDM / Guard Interval / Inter-Symbol Interference / Inter-Carrier Interference / Equalizer |
| Paper # | RCS2001-175 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2001/11/12(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) | An OFDM Receiver Scheme for Multipath Environments with Delay Profile over the Guard Interval |
| Sub Title (in English) | |
| Keyword(1) | Mobile Communication |
| Keyword(2) | OFDM |
| Keyword(3) | Guard Interval |
| Keyword(4) | Inter-Symbol Interference |
| Keyword(5) | Inter-Carrier Interference |
| Keyword(6) | Equalizer |
| 1st Author's Name | Satoshi Suyama |
| 1st Author's Affiliation | Tokyo Institute of Technology() |
| 2nd Author's Name | Yoshitaka Hara |
| 2nd Author's Affiliation | YRP Mobile Telecommunications Key Technology Research Laboratories |
| 3rd Author's Name | Hiroshi Suzuki |
| 3rd Author's Affiliation | Tokyo Institute of Technology |
| 4th Author's Name | Yukiyoshi Kamio |
| 4th Author's Affiliation | YRP Mobile Telecommunications Key Technology Research Laboratories |
| 5th Author's Name | Kazuhiko Fukawa |
| 5th Author's Affiliation | Tokyo Institute of Technology |
| Date | 2001/11/12 |
| Paper # | RCS2001-175 |
| Volume (vol) | vol.101 |
| Number (no) | 436 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |