| Presentation | 2006-03-17 Relation between CDMA demodulation dynamics and bit error rate Hiroaki TAKEDOMI, Masaki KAWAMURA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | There are some methods for CDMA demodulations. The best CDMA demodulation is the Bayesian optimal multiuser demodulation method. Since this method is NP-hard, quasi optimal multiuser demodulation methods have been proposed. A multistage demodulation method is one of the quasi optimal multiuser demoduration methods. The multistage demodulation method demodulates by synchronous dynamics. We can concider various demodulation methods except for the synchronous dynamics: asyncronous dynamics, continuous time dynamics, and finite temperature dynamics. These demodulation methods can be theoretically analyzed. However, difference between these methods have not been discussed yet. We compare bit error rate (BER) on equilibrium states by SCSNA with one by the demodulation methods. In the results, the BERs by these methods agree with each other in the case of a small load. However, they do not in the case of the load which bistability exists. Comparing the BERs of these methods, we found the continuous time dynamics have best performance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | CDMA demodulation / multistage demodulation method / demodulation dynamics / SCSNA |
| Paper # | NC2005-163 |
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| Committee | NC |
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| Conference Date | 2006/3/10(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Neurocomputing (NC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Relation between CDMA demodulation dynamics and bit error rate |
| Sub Title (in English) | |
| Keyword(1) | CDMA demodulation |
| Keyword(2) | multistage demodulation method |
| Keyword(3) | demodulation dynamics |
| Keyword(4) | SCSNA |
| 1st Author's Name | Hiroaki TAKEDOMI |
| 1st Author's Affiliation | Graduate School of Science and Engineering, Yamaguchi University() |
| 2nd Author's Name | Masaki KAWAMURA |
| 2nd Author's Affiliation | Faculty of Science, Yamaguchi University |
| Date | 2006-03-17 |
| Paper # | NC2005-163 |
| Volume (vol) | vol.105 |
| Number (no) | 659 |
| Page | pp.pp.- |
| #Pages | 6 |
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