| Paper Abstract and Keywords |
| Presentation |
2005-11-17 15:40
Iterative Modified QRM-MLD Based on CRC Check for OFDM MIMO Multiplexing
Koichi Adachi, Masao Nakagawa (Keio Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
QR decomposition associated with M-algorithm to maximum likelihood detection (MLD) is one of the decoding methods in multiple-input multiple-output (MIMO) multiplexing. Recently, we proposed iterative QRM-MLD with pilot assisted decision feedback channel estimation and showed that the better performance can be obtained compared to that of QRM-MLD with conventional pilot assisted channel estimation. However, in the previously proposed iterative QRM-MLD, as the number of iterations increases, the computational complexity also increases. Thus, in this paper, to further improve the performance while keeping the computational complexity low, we propose modified QRM-MLD based on cyclic redundancy check (CRC) codes. In the proposed method, after the transmitted signals are ranked according to their CRC check results and signal-to-interference plus noise power ratios (SINRs), signal detection is performed using modified M-algorithm. The numbers of iterations and surviving symbol replica candidates are adaptively controlled based on CRC check results. In this paper, the performance of the proposed modified QRM-MLD is evaluated by computer simulation. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
OFDM MIMO / QRM-MLD / Iterative detection / Decision feedback channel estimation / / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 105, no. 411, RCS2005-111, pp. 25-30, Nov. 2005. |
| Paper # |
RCS2005-111 |
| Date of Issue |
2005-11-10 (RCS) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
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| Conference Information |
| Committee |
RCS |
| Conference Date |
2005-11-17 - 2005-11-18 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
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| Topics (in Japanese) |
(See Japanese page) |
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| Paper Information |
| Registration To |
RCS |
| Conference Code |
2005-11-RCS |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Iterative Modified QRM-MLD Based on CRC Check for OFDM MIMO Multiplexing |
| Sub Title (in English) |
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| Keyword(1) |
OFDM MIMO |
| Keyword(2) |
QRM-MLD |
| Keyword(3) |
Iterative detection |
| Keyword(4) |
Decision feedback channel estimation |
| Keyword(5) |
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| Keyword(6) |
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| 1st Author's Name |
Koichi Adachi |
| 1st Author's Affiliation |
Keio University (Keio Univ.) |
| 2nd Author's Name |
Masao Nakagawa |
| 2nd Author's Affiliation |
Keio University (Keio Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2005-11-17 15:40:00 |
| Presentation Time |
20 minutes |
| Registration for |
RCS |
| Paper # |
RCS2005-111 |
| Volume (vol) |
vol.105 |
| Number (no) |
no.411 |
| Page |
pp.25-30 |
| #Pages |
6 |
| Date of Issue |
2005-11-10 (RCS) |
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