Blind multiuser receiver design in ISI channels

In this paper, we present an alternative multiuser signal model and discuss its applications for blind multiuser receiver design. We compare the model with the conventional and signal subspace-based signal models as well as their applications in receiver design. The geometric interpretation, bit-error rate, signal processing bounds, etc., of these signal models and blind receivers are compared and discussed. From the analyses, the trade-offs between the complexity and performance of blind multiuser receiver design are presented. Computer simulations are finally provided to demonstrate the performance and theoretic analysis