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This work presents joint iterative power allocation and interferencesuppression algorithms for DS-CDMA networks which employ multiple relays andthe amplify and forward cooperation strategy. We propose a joint constrainedoptimization framework that considers the allocation of power levels across therelays subject to individual and global power constraints and the design oflinear receivers for interference suppression. We derive constrained minimummean-squared error (MMSE) expressions for the parameter vectors that determinethe optimal power levels across the relays and the parameters of the linearreceivers. In order to solve the proposed optimization problems efficiently, wedevelop recursive least squares (RLS) algorithms for adaptive joint iterativepower allocation, and receiver and channel parameter estimation. Simulationresults show that the proposed algorithms obtain significant gains inperformance and capacity over existing schemes.

Joint Iterative Power Adjustment and Interference Suppression Algorithms for Cooperative DS-CDMA Networks