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This paper deals with optimization of the re- ceived power profile for iterative parallel and successive in- terference cancellation (PIC/SIC) in coded CDMA systems. For practical implementation additional constraints should be applied. This paper focuses on the maximum tolerable bit error rate. It will be shown that optimized power pro- file can considerably gain the overall system performance. Due to unequal required receive powers an allocation to cer- tain users can be done with respect to their individual power constraints. This is important especially in near-far scenar- ios. Beside these constraints also the maximum number of iterations is implemented due to limiting the computational complexity in the receiver.

Optimized power allocation for iterative multiuser detection for a SC-CDMA uplink