| Presentation | 2012-03-07 Application of 2-step QRM-MLD for MIMO-OFDM Katsuhiro TEMMA, Tetsuya YAMAMOTO, Fumiyuki ADACHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Maximum likelihood detection employing QR decomposition and M-algorithm (QRM-MLD) can achieve almost the same transmission performance as MLD in multiple-input multiple-output (MIMO) - orthogonal frequency division multiplexing (OFDM) systems. Recently, we proposed the reduced complexity 2-step QRM-ML block signal detection (QRM-MLBD) which discards the unreliable symbol candidates by computing the a posteriori probability from the output of minimum mean square error based frequency-domain equalization (MMSE-FDE) for single-carrier (SC) transmission. This scheme can be applied to MIMO-OFDM system. In this paper, we apply the 2-step QRM-MLD which uses the MMSE detection (MMSED) as the tentative decision to MIMO-OFDM transmission. It is shown that detection order affects the achievable performance of QRM-MLD. We consider two ordering schemes: the ordering based on the number of symbol candidates and the sorted QR decomposition (SQRD). We evaluate, by computer simulation, the average packet error rate (PER) performance and complexity of MIMO-OFDM transmission using 2-step QRM-MLD. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / MIMO / MLD / MMSED / QR decomposition / M-algorithm / ordering |
| Paper # | RCS2011-316 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2012/2/29(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| 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) | Application of 2-step QRM-MLD for MIMO-OFDM |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | MIMO |
| Keyword(3) | MLD |
| Keyword(4) | MMSED |
| Keyword(5) | QR decomposition |
| Keyword(6) | M-algorithm |
| Keyword(7) | ordering |
| 1st Author's Name | Katsuhiro TEMMA |
| 1st Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Tetsuya YAMAMOTO |
| 2nd Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| 3rd Author's Name | Fumiyuki ADACHI |
| 3rd Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| Date | 2012-03-07 |
| Paper # | RCS2011-316 |
| Volume (vol) | vol.111 |
| Number (no) | 451 |
| Page | pp.pp.- |
| #Pages | 6 |
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