Year: 2025
Type: article
Abstract: Orthogonal Multiple Access such as OFDM technique became inadequate scheme since it provides limited spectral efficiency and limited number of users. In addition to Orthogonal Multiple Access (OMA), Non-Orthogonal Multiple Access (NOMA) technique is applied in 5th generation of mobile communications that enhances both spectral efficiency and capacity with high Quality of Service (QoS). In this paper, three techniques were combined NOMA, OFDM, and CDMA in order to have optimal system performance in the presence of worst fading channel situations; fast frequency selective Rayleigh multi-path fading channel. The main contribution of this paper is the novel channel pairing technique introduced to PD-NOMA (Power Domain- NOMA) techniques denoted by Optimal Channel Pairing technique. This proposed pairing technique will be compared at the end of this paper, using MTALB Code simulation with two old paring techniques in PD-NOMA system, which are random pairing and orthogonal pairing.
Source: MEJ Mansoura Engineering Journal
Authors: Hazem H. El-Banna, Nelly M. Shafik
Institution: Modern Academy for Engineering and Technology
Language: English
Topic: PAPR reduction in OFDM
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4414384061