Decision feedback multiuser detection: a systematic approach

Abstract

Abstract-In addition to optimality in symmetric energy, it is also shown that under certain conditions, the optimum DFD achieves the AEE performance of the exponentially complex maximum-likelihood detector for all users simultaneously. None of the results of this paper make the perfect feedback assumption. The implications of our work on power control for multiuser detection are also discussed.

A generalized probabilistic data association detector for multiple antenna systems

“…complex Gaussian, will have full column rank almost surely, and, consequently the symmetric matrix will be positive definite almost surely. For this reason, (7) is analogous to the synchronous CDMA system in [5]. 1 Extending the proposed algorithm for n > n is a straightforward matter of adapting the overloaded version of the PDA method (see [4]) to the current problem.…”

“…1) Based on the matrix in (7), obtain the optimal detection sequence proposed for the decision feedback detector in [5] Under the decoupled system in (8), the GPDA detector computes and probabilities per transmit symbol, respectively, for square and rectangular -QAM. The overall complexity of the new algorithm can be substantially reduced by applying the computational "speed-up" tactics presented in [2].…”

A Novel Probabilistic Data Association Based MIMO Detector Using Joint Detection of Consecutive Symbol Vectors

“…1) Determine the optimal detection sequence according to the ordering criterion proposed for the decision feedback detector in [11], and denote the sequence as { } (10), and set the results equal to the corresponding elements of ( ) j n ′ P .…”

SINR, power efficiency, and theoretical system capacity of parallel interference cancellation

“…Hybrid PIC detectors have also been proposed that use a linear combination of both the hard and soft decision statistics [4]. Since the pioneering work of Varanasi, Aazhang, Kaul, and Woerner, there has been an increased interest in understanding the performance of the PIC detector (see, for instance, [5], [6], [7], [8], [9], [10], [11]). …”