Paper Abstract and Keywords |
Presentation |
2007-03-15 16:30
Reduction of Energy Function by Bit Flipping for Multi-User Detection Ryuichi Hane, Yutaka Jitsumatsu, Tohru Kohda (Kyushu Univ) |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In CDMA communications, both decorrelator and MMSE do not achieve the minimum bit error rate(BER).because hard decisions are made on their outputs multiplied by the inverse of correlation matrix. Hence MMSE receiver does not give the minimum bit error rate(BER). On the other hand, maximum a posteriori probability(MAP) receiver minimize BER, but MAP receiver is not feasible because the calculation time is proportional to exponent of the number of users. We show that neighborhood search method using energy function is useful to reduce BER determined by correlator output. This receiver achieves lower BER than decorrelator and MMSE receiver and its calculation time is considerably less than that of MAP receiver. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Asynchronous DS-CDMA / Multi-User Detection / Decorrelator / Energy Function / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 106, no. 594, IT2006-82, pp. 123-128, March 2007. |
Paper # |
IT2006-82 |
Date of Issue |
2007-03-08 (IT, ISEC, WBS) |
ISSN |
Print edition: ISSN 0913-5685 |
Download PDF |
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Conference Information |
Committee |
IT ISEC WBS |
Conference Date |
2007-03-15 - 2007-03-16 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Gunma Univ. (Kiryu Campus) |
Topics (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
IT |
Conference Code |
2007-03-IT-ISEC-WBS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Reduction of Energy Function by Bit Flipping for Multi-User Detection |
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Keyword(1) |
Asynchronous DS-CDMA |
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Multi-User Detection |
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Decorrelator |
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Energy Function |
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1st Author's Name |
Ryuichi Hane |
1st Author's Affiliation |
Kyushu University (Kyushu Univ) |
2nd Author's Name |
Yutaka Jitsumatsu |
2nd Author's Affiliation |
Kyushu University (Kyushu Univ) |
3rd Author's Name |
Tohru Kohda |
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Kyushu University (Kyushu Univ) |
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Speaker |
Author-1 |
Date Time |
2007-03-15 16:30:00 |
Presentation Time |
25 minutes |
Registration for |
IT |
Paper # |
IT2006-82, ISEC2006-137, WBS2006-79 |
Volume (vol) |
vol.106 |
Number (no) |
no.594(IT), no.596(ISEC), no.598(WBS) |
Page |
pp.123-128 |
#Pages |
6 |
Date of Issue |
2007-03-08 (IT, ISEC, WBS) |