Scheduling and Layer Selection Based Performance Improvement of Uplink SCMA System with Receive Beamforming

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A modified uplink sparse code multiple access (SCMA) scheme with receive beamforming is herein proposed. Although a base station equipped with multiple antennas can support many users simultaneously using multi-beams, the complexity of the optimal SCMA system may be too large to be implemented in view of a practical system. Therefore, a two stage SCMA system with receive beamforming is proposed, based on uplink scheduling and three step layer selection. Analysis and simulation results of the proposed scheme showed the advantage of large complexity reduction with little performance degradation.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2019-07
Language
English
Article Type
Article
Citation

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, v.68, no.7, pp.7209 - 7213

ISSN
0018-9545
DOI
10.1109/TVT.2019.2918748
URI
http://hdl.handle.net/10203/264276
Appears in Collection
EE-Journal Papers(저널논문)
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