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Improved iterative parallel interference cancellation for coded CDMA systems

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3 Author(s)
Marinkovic, S. ; Dept. of Electr. & Inf. Eng., Sydney Univ., NSW, Australia ; Vucetic, B.S. ; Evans, J.

A novel method for interference estimation in the iterative parallel interference canceller is presented. The standard log-likelihood ratio algorithm suffers from a bias problem that limits the system capacity. We propose an improved iterative parallel interference canceller which is able to overcome this problem. In a highly loaded system the correlation between the the decoder inputs in successive iterations is low enough so that a simple combining of the decoder inputs, as if they were independent, yields a high capacity increase

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Information Theory, 2001. Proceedings. 2001 IEEE International Symposium on

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