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Nonuniform Code Multiple Access
Joint Authors
Zhang, Ningbo
Kang, Guixia
Yan, Cheng
Source
Wireless Communications and Mobile Computing
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-18
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Information Technology and Computer Science
Abstract EN
For sparse code multiple access advanced (SCMAA), the quality of initial information on each resource node and the convergence reliability of the detected user in each decision process were unsatisfactory at the message passing algorithm (MPA) receiver.
Driven by these problems, this paper proposes a nonuniform code multiple access (NCMA) scheme.
In the codebook design of NCMA, different transmitted layers are generated from different complex multidimension constellations, respectively, and a novel basic complex multidimension constellation design is proposed to increase the minimum intrapartition distance.
Then a novel criterion of permutation set is proposed to maximize the sum of distances between interfering dimensions of transmitted codewords multiplexed on any resource node, where the number of nonzero elements of transmitted codewords is more than 1.
On the other side, an advanced MPA receiver is proposed to improve the reliability of detection on each transmitted layer of NCMA.
Simulation results show that the block error rate performance of NCMA outperforms SCMAA and sparse code multiple access (SCMA) under the same spectral efficiency.
American Psychological Association (APA)
Yan, Cheng& Zhang, Ningbo& Kang, Guixia. 2018. Nonuniform Code Multiple Access. Wireless Communications and Mobile Computing،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1216244
Modern Language Association (MLA)
Yan, Cheng…[et al.]. Nonuniform Code Multiple Access. Wireless Communications and Mobile Computing No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1216244
American Medical Association (AMA)
Yan, Cheng& Zhang, Ningbo& Kang, Guixia. Nonuniform Code Multiple Access. Wireless Communications and Mobile Computing. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1216244
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1216244