Title :
EM and SAGE algorithms for multi-user detection
Author :
Nelson, Laurie B. ; Poor, H. Vincent
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., NJ, USA
Abstract :
This work describes an EM-based approach to multi-user detection that treats the signals of interfering users as hidden data. We consider a new algorithm based on the space-alternating generalized EM (SAGE) algorithm appropriate for estimation of discrete random parameters, and we use it to derive rapidly-convergent nearly optimum multi-user receivers
Keywords :
convergence of numerical methods; interference (signal); iterative methods; parameter estimation; random processes; signal detection; EM algorithm; SAGE algorithm; convergence rates; discrete random parameters estimation; hidden data; interfering users; iterative method; multi-user detection; optimum multi-user receivers; space-alternating generalized EM algorithm; Bayesian methods; Convergence; Interference; Iterative algorithms; Iterative methods; Multiaccess communication; Multiuser detection; Parameter estimation; Statistics; Symmetric matrices;
Conference_Titel :
Information Theory and Statistics, 1994. Proceedings., 1994 IEEE-IMS Workshop on
Conference_Location :
Alexandria, VA
Print_ISBN :
0-7803-2761-6
DOI :
10.1109/WITS.1994.513899
