公开(公告)号：US20220060295A1

公开(公告)日：2022-02-24

申请号：US17077512

申请日：2020-10-22

Applicant: RESEARCH COOPERATION FOUNDATION OF YEUNGNAM UNIVERSITY

Inventor： Kwon Hue CHOI ,  Dong Jun NA

IPC: H04L5/00 ,  H04J99/00

Abstract: The present disclosure provides a method and apparatus for sequentially detecting and decoding multiuser sparse code multiple access (SCMA) signal. A detection method includes selecting a single variable node depending on how much the plurality of variable nodes each use function nodes that connect to updated variable nodes; updating messages passed to the single variable node, based on a function node input message passed to the plurality of function nodes and signals received by the plurality of function nodes through channels; mapping updated messages to a priori information of a channel decoder; inputting the priori information to the channel decoder and thereby obtaining probability information of a symbol for the single variable node; and updating messages passed from the single variable node to one of the plurality of function nodes by applying a weight to the probability information of the symbol for the single variable node.