Presentation 2006-05-19
Turbo Equalization for DS-CDMA with Frequency-domain Equalization
Kazuaki TAKEDA, Fumiyuki ADACHI,
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Abstract(in English) In direct sequence code division multiple access (DS-CDMA), frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion can be applied to exploit the channel frequency-selectivity and therefore can replace the conventional rake combining with much improved bit error rate (BER) performance. However, the residual inter-chip interference (ICI) is present after MMSE-FDE and hence the achievable BER performance is degraded compared to the lower bound performance. We proposed a frequency-domain ICI cancellation that can significantly suppress the residual ICI. In this paper, we propose DS-CDMA turbo equalization in which frequency-domain ICI cancellation is incorporated into iterative turbo decoding. The achievable BER performance is evaluated by computer simulation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) DS-CDMA / frequency-domain equalization / residual inter-chip interference / frequency-domain adaptive ICI canceller / turbo equalization
Paper # RCS2006-32
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Committee RCS
Conference Date 2006/5/11(1days)
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Registration To Radio Communication Systems (RCS)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Turbo Equalization for DS-CDMA with Frequency-domain Equalization
Sub Title (in English)
Keyword(1) DS-CDMA
Keyword(2) frequency-domain equalization
Keyword(3) residual inter-chip interference
Keyword(4) frequency-domain adaptive ICI canceller
Keyword(5) turbo equalization
1st Author's Name Kazuaki TAKEDA
1st Author's Affiliation Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University()
2nd Author's Name Fumiyuki ADACHI
2nd Author's Affiliation Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University
Date 2006-05-19
Paper # RCS2006-32
Volume (vol) vol.106
Number (no) 43
Page pp.pp.-
#Pages 6
Date of Issue