Performance Improvement on Nonorthogonal Multiple Access without CSIT
Joint Authors
Xia, Wenlong
Zhou, Yuanping
Meng, Qingdang
Source
Wireless Communications and Mobile Computing
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-02-19
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Information Technology and Computer Science
Abstract EN
In this paper, a downlink virtual-channel-optimization nonorthogonal multiple access (VNOMA) without channel state information at the transmitter (CSIT) is proposed.
The novel idea is to construct multiple complex virtual channels by jointly adjusting the amplitudes and phases to maximize the minimum Euclidean distance (MED) among the superposed constellation points.
The optimal solution is derived in the absence of CSIT.
Considering practical communications with finite input constellations in which symbols are uniformly distributed, we resort to the sum constellation constrained capacity (CCC) to evaluate the performance.
For MED criterion, the maximum likelihood (ML) decoder is expected at the receiver.
To decrease the computational cost, we propose a reduced-complexity bitwise ML (RBML) decoder.
Experimental results are presented to validate the superior of our proposed scheme.
American Psychological Association (APA)
Xia, Wenlong& Zhou, Yuanping& Meng, Qingdang. 2020. Performance Improvement on Nonorthogonal Multiple Access without CSIT. Wireless Communications and Mobile Computing،Vol. 2020, no. 2020, pp.1-6.
https://search.emarefa.net/detail/BIM-1214401
Modern Language Association (MLA)
Xia, Wenlong…[et al.]. Performance Improvement on Nonorthogonal Multiple Access without CSIT. Wireless Communications and Mobile Computing No. 2020 (2020), pp.1-6.
https://search.emarefa.net/detail/BIM-1214401
American Medical Association (AMA)
Xia, Wenlong& Zhou, Yuanping& Meng, Qingdang. Performance Improvement on Nonorthogonal Multiple Access without CSIT. Wireless Communications and Mobile Computing. 2020. Vol. 2020, no. 2020, pp.1-6.
https://search.emarefa.net/detail/BIM-1214401
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1214401