A New Linear Group-Wise SIC Multiuser Detector
Abdelouahab Bentrcia, Azzedine Zerguine, Asrar U. H. Sheikh, Moussa Benyoucef · IEEE Communications Letters · 2007
In this work, we introduce a new linear group-wise SIC multi-user detector that can converge to either the decorrelator or the least minimum mean-square error (LMMSE) detector. We study the convergence behavior of the proposed scheme and show that the latter is equivalent to the block Gauss-Seidel iterative method if the group-detection scheme used is the decorrelator detector. Moreover, we prove that the latter is convergent if the group-detection matrix is positive definite. Our simulation results are in excellent agreement with the proposed theory