Enabling Sphere Decoding for SCMA

Volume: 21, Issue: 12, Pages: 2750 - 2753
Published: Dec 1, 2017
Abstract
In this paper, we propose a reduced-complexity optimal modified sphere decoding (MSD) detection scheme for SCMA. As SCMA systems are characterized by a number of resource elements (REs) that are less than the number of the supported users, the channel matrix is rank-deficient, and sphere decoding (SD) cannot be directly applied. Inspired by the Tikhonov regularization, we formulate a new full-rank detection problem that it is equivalent to the...
Paper Details
Title
Enabling Sphere Decoding for SCMA
Published Date
Dec 1, 2017
Volume
21
Issue
12
Pages
2750 - 2753
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