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Optimization of Unequal Power coded Multiuser DS-CDMA using Extrinsic Information Transfer Charts

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


We utilize Extrinsic Information Transfer (EXIT) charts to optimize the power allocation in a multiuser turbocoded CDMA system. We investigate two methods to obtain the optimal power levels: the first minimises the total power; the second minimises the area between the transfer curves of the interference canceller (IC) or turbo decoder. We show through simulation that the optimized power levels allow for successful decoding of heavily loaded systems.

CollectionsANU Research Publications
Date published: 2006
Type: Conference paper
Source: Proceedings of the 40th Conference on Information Sciences and Systems
DOI: 10.1109/CISS.2006.286690


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