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Telecommunications System & Management

ISSN: 2167-0919

Open Access

Performance Evaluation of Energy Efficiency and Spectral Efficiency: NOMA vs OFDMA

Abstract

Aakarsh Dhariwal

Non-orthogonal multiple access (NOMA) has emerged as a promising technique to satiate the fifth-generation (5G) requirements like high spectral efficiency, energy efficiency, increased throughput, and optimized sub-channel utilization over the previously deployed orthogonal multiple access (OMA). In this paper, we employ a low-complexity fractional power allocation algorithm to allocate to each user in the Base Stations transmitting area. In this paper, we aim to explore energy efficiency versus spectral efficiency trade-off with the average signal to noise ratio by employing the superposition method to effectively utilize the sub-channel with Successive Interference Cancellation in the downlink case at the receiver end to achieve the expected simulations results. Furthermore, we have also studied the effect on spectral and energy efficiency with an increased number of users in the cellular area. Finally, we have presented simulation results to corroborate our proposed results where SE increases when we increase transmission power and signal to noise ratio.

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