Rate Splitting Multiple Access (RSMA) has recently emerged as a promising technique to enhance the transmission rate for multiple access networks. Unlike conventional schemes, RSMA requires splitting and transmitting messages at different rates. The joint optimization of power allocation control transmitter is challenging given uncertainty dynamics environment. Furthermore, securing transmissio...

For cooperative multicast systems using nonorthogonal multiple access, we propose optimal power allocation to maximize the achievable rate, and present its performance analysis in terms of average achievable rate and outage probability assuming Rayleigh fading channels. To perform the optimal power allocation, the source requires instantaneous channel information for a subset of the links. In t...

Multi-User Orthogonal Frequency Division Multiplexing (MU-OFDM) is an efficient technique for achieving high downlink capacity in high-speed communication systems. A key issue in MU-OFDM is the allocation of the OFDM subcarriers and power to users sharing the channel. In this paper a proportional rate-adaptive resource allocation algorithm for MU-OFDM is presented. Subcarrier and power allocati...

Abstract In this paper, we investigate the performance of link adaptation (LA) algorithms for cooperative multiple access relay networks. first transmission phase, sources transmit in turn consecutive time slots. second retransmission destination schedules one relaying node to send redundancies. LA is a fundamental mechanism allowing source nodes adapt radio channel conditions. problem rate all...