  This work presents blind joint interference suppression and power allocation
algorithms for DS-CDMA networks with multiple relays and decode and forward
protocols. A scheme for joint allocation of power levels across the relays
subject to group-based power constraints and the design of linear receivers for
interference suppression is proposed. A code-constrained constant modulus (CCM)
design for the receive filters and the power allocation vectors is devised
along with a blind channel estimator. In order to solve the proposed
optimization efficiently, an alternating optimization strategy is presented
with recursive least squares (RLS)-type algorithms for estimating the
parameters of the receiver, the power allocation and the channels. Simulations
show that the proposed algorithms obtain significant gains in capacity and
performance over existing schemes.
