| Presentation | 2004-11-19 A Study on Adaptive Successive Detection using M algorithm based on ML criterion for down-link MC-CDMA Systems Yoshihito MORISHIGE, Masahiro FUJII, Makoto ITAMI, Kohji ITOH, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | It is known that Maximum Likelihood (ML) criterion results in optimum detector for CDMA systems in the sense of minimizing the probability of the decision error. While the ML detector minimizes the BER, it requires a computational complexity that grows exponentially with the increasing number of simultaneous users. In this paper, we propose a sub-optimum multiuser detection using M algorithm based on ML criterion for synchronous down-link MC-CDMA system. ye consider tree search algorithm based on linear filters such as MRC, ZF and MMSE, and introduce M algorithm in searching survivors which extend to next stage. Although the complexity of the ML detector as a function of the number of users is exponentially increasing, the proposed scheme requires linear complexity. The proposed scheme achieves the lower complexity without the loss of BER performance in comparison with ML detector. Further, the proposed scheme reduces more computational complexity of ML detector by introducing grouping of reliability of signal detection based on ML criterion. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MC-CDMA / Maximum Likelihood detector / Tree structure / M algorithm / Multiuser Detection |
| Paper # | RCS2004-234 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2004/11/12(1days) |
| Place (in Japanese) | (See Japanese page) |
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| 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) | A Study on Adaptive Successive Detection using M algorithm based on ML criterion for down-link MC-CDMA Systems |
| Sub Title (in English) | |
| Keyword(1) | MC-CDMA |
| Keyword(2) | Maximum Likelihood detector |
| Keyword(3) | Tree structure |
| Keyword(4) | M algorithm |
| Keyword(5) | Multiuser Detection |
| 1st Author's Name | Yoshihito MORISHIGE |
| 1st Author's Affiliation | Department of Applied Electronics, Tokyo University of Science() |
| 2nd Author's Name | Masahiro FUJII |
| 2nd Author's Affiliation | Department of Applied Electronics, Tokyo University of Science |
| 3rd Author's Name | Makoto ITAMI |
| 3rd Author's Affiliation | Department of Applied Electronics, Tokyo University of Science |
| 4th Author's Name | Kohji ITOH |
| 4th Author's Affiliation | Department of Applied Electronics, Tokyo University of Science |
| Date | 2004-11-19 |
| Paper # | RCS2004-234 |
| Volume (vol) | vol.104 |
| Number (no) | 440 |
| Page | pp.pp.- |
| #Pages | 6 |
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