Title
Non-Coherent Multi-User Detection Based On Expectation Propagation
Abstract
In this paper, we propose a novel soft-output multi-user detector for non-coherent multiple access with Grassmannian signaling under Rayleigh block fading. Our detector is based on expectation propagation (EP) approximate inference and has polynomial complexity in the number of users. A simplified version of this scheme coincides with a scheme based on soft minimum-mean-square-error (MMSE) estimation and successive interference cancellation (SIC). Both schemes, especially EP, produce accurate approximates of the true posterior. They outperform a baseline decoder based on projecting the received signal onto the subspace orthogonal to the interference in terms of both hard-detected symbol error rate and coded bit error rate.
Year
DOI
Venue
2019
10.1109/IEEECONF44664.2019.9049073
CONFERENCE RECORD OF THE 2019 FIFTY-THIRD ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS
Keywords
DocType
ISSN
non-coherent communications, multiple access, expectation propagation, Grassmannian constellations
Conference
1058-6393
Citations 
PageRank 
References 
0
0.34
0
Authors
6
Name
Order
Citations
PageRank
Khac-Hoang Ngo1131.79
Maxime Guillaud231530.64
Alexis Decurninge3317.78
Sheng Yang428633.29
Subrata Sarkar572.78
Philip Schniter6162093.74