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Adaptive Optimization of an Iterative Multiuser Detector for Turbo-Coded CDMA

Shepherd, David; Brannstrom, Fredrik; Schreckenbach, Frank; Shi, Zhenning; Reed, Mark


Extrinsic information transfer (EXIT) charts are utilized to optimize the iterative multiuser detector receiver in a multiuser turbo-coded CDMA system. The (receive) power levels are optimized for the system load using a constrained nonlinear optimization approach. The optimal decoding schedule is derived dynamically using the power optimized EXIT chart and a Viterbi search algorithm. Dynamic scheduling is shown to be a more flexible approach which results in a more stable QoS for a typical...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: IEEE Transactions on Wireless Communications
DOI: 10.1109/T-WC.2008.070557


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