RESEARCH ON THE OPTIMAL ALGORITHM OF THE USER COMBINED IN THE UPLINK  WITH C-NOMA AND C-RSMA

Nguyen Van Vinh; Bui Thi Kim Thoa

Nguyen Van Vinh Hung Yen University of Technology and Education
Bui Thi Kim Thoa Hung Yen University of Technology and Education

Keywords: NOMA, C-NOMA, C-RSMA, 5th Mobile Communication Network (5G)

Abstract

In this paper, we propose two scenarios: cooperative non-orthogonal multiple access (C-NOMA) and cooperative rate multiple access (C-RSMA) with associated users in the uplink. In these two scenarios, in the first slot each user transmits his own signal and receives the other user’s signal in full duplex mode and in the second slot each user forwards the other user’s messages. with amplifiers and forwarding protocols (AF). In both scenarios, to achieve better spectral efficiency, the user transmits the signal in non orthogonal mode in both slots. We then deduce the achievable ratios for C-NOMA and C-RSMA, and set up two optimization problems to maximize the minimum ratio of two users by considering the system ratio fair
number. Finally, the aforementioned performance is confirmed based on the simulation results.

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