| Presentation | 2003/2/27 MIMO-OFDM Turbo Equalization for Multipath Environments with the Delay Difference Greater than Guard Interval Satoshi SUYAMA, Hiroshi SUZUKI, Kazuhiko FUKAWA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To realize high-speed transmission in OFDM mobile communications, MIMO transmission scheme which spatial-multiplexes data streams by multiple antennas is investigated. Conventional MIMO-OFDM schemes remarkably suffer from both inter-symbol interference (IS1) by the adjacent OFDM symbols and inter-carrier interference (ICI) within the same symbol, when the multipath delay difference is greater than the guard interval (GI). This paper proposes a new MIMO-OFDM Turbo interference cancel equalizer (Turbo-ICE), which consists of the decision feedback equalization (DFE) to cope with ISI and the Turbo equalization to cancel ICI, and can separately detect the spatial-multiplexing data streams. Turbo-ICE can improve the transmission performance, by utilizing bit LLRs which are feedbacked from the decoding process for the equalization and the data stream separation. In addition, this paper shows a configuration of simplified Turbo-ICE which can reduce the computational complexity. Computer simulations in accordance with the wireless LAN applications enhanced to MIMO are conducted so as to verify the effectiveness of Turbo-ICE, and demonstrate that it can accomplish the good performance in multipath environments even when the excess delay is greater than GI. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile communications / OFDM / MIMO / inter-symbol interference / inter-carrier interference / Turbo equalization |
| Paper # | SST2002-96,A・P2002-195,RCS2002-312,MoMuC2002-121,NW2002-203 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2003/2/27(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Microwaves (MW) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | MIMO-OFDM Turbo Equalization for Multipath Environments with the Delay Difference Greater than Guard Interval |
| Sub Title (in English) | |
| Keyword(1) | Mobile communications |
| Keyword(2) | OFDM |
| Keyword(3) | MIMO |
| Keyword(4) | inter-symbol interference |
| Keyword(5) | inter-carrier interference |
| Keyword(6) | Turbo equalization |
| 1st Author's Name | Satoshi SUYAMA |
| 1st Author's Affiliation | Tokyo Institute of Technology() |
| 2nd Author's Name | Hiroshi SUZUKI |
| 2nd Author's Affiliation | Tokyo Institute of Technology |
| 3rd Author's Name | Kazuhiko FUKAWA |
| 3rd Author's Affiliation | Tokyo Institute of Technology |
| Date | 2003/2/27 |
| Paper # | SST2002-96,A・P2002-195,RCS2002-312,MoMuC2002-121,NW2002-203 |
| Volume (vol) | vol.102 |
| Number (no) | 681 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |