Title | ||
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A Low-Complexity Approach For Sum-Rate Maximization In Cooperative Noma Enhanced Cellular Networks |
Abstract | ||
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This paper investigates the performance of cooperative non-orthogonal multiple access (C-NOMA) in a cellular downlink system. The system model consists of a base station (BS) serving multiple users, where users that have the capability of full-duplex (FD) communications can assist the transmissions between the BS and users with poor channel quality through device-to-device (D2D) communications. To maximize the achievable sum rate of the whole system while guaranteeing a certain quality of service (QoS) for all users, we formulate and solve a novel optimization problem that jointly determines the optimal D2D user pairing and the optimal power control scheme. The formulated problem is a mixed-integer non-linear program (MINLP), which has extremely high complexity. To overcome this issue, a two-step policy is proposed to solve the problem in polynomial time. First, we derive a closed-form expression of the optimal power control scheme that maximizes the sum rate of a given pair of users with a required QoS. Then, using the derived closed-form in the first step, we employ the Hungarian algorithm as the pairing policy in multi-user settings. Our simulation results show that the proposed scheme prevails some previously proposed heuristic approach for the given problem. |
Year | DOI | Venue |
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2020 | 10.1109/ICCWorkshops49005.2020.9145440 | 2020 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (ICC WORKSHOPS) |
Keywords | DocType | ISSN |
Cooperative NOMA, device-to-device communication, power control | Conference | 2164-7038 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
5 |
Name | Order | Citations | PageRank |
---|---|---|---|
Phuc Dinh | 1 | 2 | 1.04 |
Mohamed Amine Arfaoui | 2 | 42 | 7.73 |
sanaa sharafeddine | 3 | 145 | 23.26 |
C. Assi | 4 | 350 | 32.41 |
Ali Ghrayeb | 5 | 1668 | 124.84 |