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Successive interference cancellation with SISO decoding and EM channel estimation

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3 Author(s)
M. Kobayashi ; Ecole Nat. Superieure des Telecommun., Paris, France ; J. Boutros ; G. Caire

We derive a low-complexity receiver scheme for joint multiuser decoding and parameter estimation of code division multiple access signals. The resulting receiver processes the users serially and iteratively and makes use of soft-in soft-out single-user decoders, of soft interference cancellation and of expectation-maximization parameter estimation as the main building blocks. Computer simulations show that the proposed receiver achieves near single-user performance at very high channel load (number of users per chip) and outperforms conventional schemes with similar complexity.

Published in:

IEEE Journal on Selected Areas in Communications  (Volume:19 ,  Issue: 8 )