TY - JOUR
T1 - On Performance Comparison of Multi-Antenna HD-NOMA, SCMA, and PD-NOMA Schemes
AU - Yadav, Animesh
AU - Quan, Chen
AU - Varshney, Pramod K.
AU - Poor, H. Vincent
N1 - Funding Information:
Manuscript received October 27, 2020; accepted November 23, 2020. Date of publication December 1, 2020; date of current version April 9, 2021. This work was supported in part by the U.S. National Science Foudnation under Grant CCF-0939370 and Grant CCF-1908308. The associate editor coordinating the review of this article and approving it for publication was W. Cheng. (Corresponding author: Animesh Yadav.) Animesh Yadav, Chen Quan, and Pramod K. Varshney are with the Department of Electrical Engineering and Computer Science, Syracuse University, Syracuse, NY 13244 USA (e-mail: ayadav04@syr.edu; chquan@syr.edu; varshney@syr.edu).
Publisher Copyright:
© 2012 IEEE.
PY - 2021/4
Y1 - 2021/4
N2 - In this letter, we study the uplink channel throughput performance of a proposed novel multiple-antenna hybrid-domain non-orthogonal multiple access (MA-HD-NOMA) scheme. This scheme combines the conventional sparse code multiple access (SCMA) and power-domain NOMA (PD-NOMA) schemes in order to increase the number of users served as compared to conventional NOMA schemes and uses multiple antennas at the base station. To this end, a joint resource allocation problem for the MA-HD-NOMA scheme is formulated that maximizes the sum rate of the entire system. For a comprehensive comparison, the joint resource allocation problems for the multi-antenna SCMA (MA-SCMA) and multi-antenna PD-NOMA (MA-PD-NOMA) schemes with the same overloading factor are formulated as well. Each of the formulated problems is a mixed-integer non-convex program, and hence, we apply successive convex approximation (SCA)- and reweighted ell{1} minimization-based approaches to obtain rapidly converging solutions. Numerical results reveal that the proposed MA-HD-NOMA scheme has superior performance compared to MA-SCMA and MA-PD-NOMA.
AB - In this letter, we study the uplink channel throughput performance of a proposed novel multiple-antenna hybrid-domain non-orthogonal multiple access (MA-HD-NOMA) scheme. This scheme combines the conventional sparse code multiple access (SCMA) and power-domain NOMA (PD-NOMA) schemes in order to increase the number of users served as compared to conventional NOMA schemes and uses multiple antennas at the base station. To this end, a joint resource allocation problem for the MA-HD-NOMA scheme is formulated that maximizes the sum rate of the entire system. For a comprehensive comparison, the joint resource allocation problems for the multi-antenna SCMA (MA-SCMA) and multi-antenna PD-NOMA (MA-PD-NOMA) schemes with the same overloading factor are formulated as well. Each of the formulated problems is a mixed-integer non-convex program, and hence, we apply successive convex approximation (SCA)- and reweighted ell{1} minimization-based approaches to obtain rapidly converging solutions. Numerical results reveal that the proposed MA-HD-NOMA scheme has superior performance compared to MA-SCMA and MA-PD-NOMA.
KW - Hybrid-domain non-orthogonal multiple access (HD-NOMA)
KW - multiple-antenna NOMA
KW - power-domain NOMA (PD-NOMA)
KW - sparse code multiple access (SCMA)
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U2 - 10.1109/LWC.2020.3041601
DO - 10.1109/LWC.2020.3041601
M3 - Article
AN - SCOPUS:85097420495
SN - 2162-2337
VL - 10
SP - 715
EP - 719
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
IS - 4
M1 - 9274393
ER -