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IEICE TRANSACTIONS on Fundamentals

Minimum Kullback-Leibler-Based Turbo Multiuser Detector over Decomposition CDMA Signal

Tuchsanai PLOYSUWAN, Sawat TANTIPHANWADI, Prasit TEEKAPUT

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Summary :

In this paper, we develop a new iterative turbo multiuser detector for direct sequence code-division multiple access (DS-CDMA) systems over unknown frequency-selective channels by decomposing the observation signal into a number of signal components. Virtual trellis model representing the ISI channel for each separating signal user is designed to generate extrinsic probability in term of BCJR algorithm for exchange with a single channel decoder as priori information. Minimum kullback-leibler (MKL) framework is derived to calculate numerical channel estimation and extrinsic probability. In comparison with other similar receiver, simulation results demonstrate that the proposed solution achieves the desirable performance.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E91-A No.10 pp.2963-2972
Publication Date
2008/10/01
Publicized
Online ISSN
1745-1337
DOI
10.1093/ietfec/e91-a.10.2963
Type of Manuscript
Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category
DS-CDMA

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