A new framework for soft decision equalization in frequency selective MIMO channels
IEEE Transactions on Communications
An iterative list-based multiuser detector for overloaded receivers in a rayleigh fading channel
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
IEEE Transactions on Communications
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We consider a narrowband multiuser system in which several transmitting users are received through a synchronous, flat fading channel at an antenna array. The paper introduces a multiuser detection technique that combines group wise detection with iteration. It is well suited to overloaded conditions, where there are more transmitter antennas than receive antennas. The soft decisions it uses internally also make it suitable as a detector in a concatenated structure. Its performance and computation can be traded off through selection of group size. A variant of the algorithm achieves further computation reduction by incorporating a soft sphere detection core.