NDLI: Multistage MMSE weighted decision feedback multiuser detector for DS-CDMA and MC-CDMA

Content Provider	IEEE Xplore Digital Library
Author	Chen-Chu Hsu Yumin Lee
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan (Chen-Chu Hsu; Yumin Lee)
Abstract	This paper proposes the MMSE weighted decision feedback (WDF) multiuser detector (MUD), which is an enhancement of the MMSE decision-feedback MUD. In contrast to MMSE-DF MUD, in MMSE-WDF past decisions are scaled by weighting factors that reflect their reliability. Furthermore, a multistage structure is utilized to improve the decision quality. An algorithm is also presented for jointly optimizing the reliability weighting factors and the coefficients of feedforward and feedback filters for every stage. Simulation results show that some variations of MMSE-WDF perform very closely to the single-user bound for E/sub b//N/sub 0/ lower than 25 dB and the number of active users less than 30.
Starting Page	2421
Ending Page	2425
File Size	360434
Page Count	5
File Format	PDF
ISBN	0780379543
ISSN	10903038
DOI	10.1109/VETECF.2003.1285964
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-10-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Feedback Multiaccess communication Multicarrier code division multiple access Multiuser detection Multiple access interference Interference cancellation Signal processing algorithms Spread spectrum communication Silicon carbide Detectors
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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