TY - JOUR
T1 - Outage Analysis for Downlink Non-Orthogonal Multiple Access (NOMA) with CDF-Based Scheduling
AU - Lim, Byungju
AU - Nam, Sung Sik
AU - Ko, Young Chai
AU - Alouini, Mohamed Slim
N1 - Funding Information:
Manuscript received January 15, 2020; accepted January 27, 2020. Date of publication February 4, 2020; date of current version June 10, 2020. This work was supported by a grant-in-aid of HANWHA SYSTEMS. The associate editor coordinating the review of this article and approving it for publication was C. Huang. (Sung Sik Nam is co-first author.) (Corresponding author: Young-Chai Ko.) Byungju Lim and Young-Chai Ko are with the School of Electrical Engineering, Korea University, Seoul 02841, South Korea (e-mail: limbj93@korea.ac.kr; koyc@korea.ac.kr).
Publisher Copyright:
© 2020 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/6
Y1 - 2020/6
N2 - In this letter, we statistically analyze the outage performance of non-orthogonal multiple access (NOMA) with CDF-based scheduling (CS) over Nakagami-m fading channels. Based on our system model assumptions, CS selects the multiple users based on CDF of channel gain, which guarantees fair resource allocation. With this CS algorithm, the closed-form of outage is derived to show the effect of CS. Specifically, we first analyze the selection probability of each user and, via the derived distribution results, statistically investigate the outage performance when two users are selected. In addition, we obtain the diversity order that is affected by both the weights of each user and the m parameter of Nakagami-m fading channel. Our analytical results are thoroughly validated by cross-checking them against the results obtained via the Monte-Carlo simulations. Some selected results show that CS exploits multiuser diversity.
AB - In this letter, we statistically analyze the outage performance of non-orthogonal multiple access (NOMA) with CDF-based scheduling (CS) over Nakagami-m fading channels. Based on our system model assumptions, CS selects the multiple users based on CDF of channel gain, which guarantees fair resource allocation. With this CS algorithm, the closed-form of outage is derived to show the effect of CS. Specifically, we first analyze the selection probability of each user and, via the derived distribution results, statistically investigate the outage performance when two users are selected. In addition, we obtain the diversity order that is affected by both the weights of each user and the m parameter of Nakagami-m fading channel. Our analytical results are thoroughly validated by cross-checking them against the results obtained via the Monte-Carlo simulations. Some selected results show that CS exploits multiuser diversity.
KW - CDF-based scheduling
KW - NOMA
KW - Nakagami-m fading
KW - diversity order
KW - outage
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U2 - 10.1109/LWC.2020.2971492
DO - 10.1109/LWC.2020.2971492
M3 - Article
AN - SCOPUS:85086630243
VL - 9
SP - 822
EP - 825
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
SN - 2162-2337
IS - 6
M1 - 8982077
ER -