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Comprehensive Performance Analysis of Uplink and Downlink Transmission in NOMA-OFDM Systems
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Author(s): E. Udayakumar (Kalaignarkarunanidhi Institute of Technology, Coimbatore, India), V. Krishnaveni (PSG College of Technology, Coimbatore, India)and Shilpa Mehta (Independent Researcher, New Zealand)
Copyright: 2026
Pages: 16
Source title:
Recent Advances in Smart Communication Technologies for a Sustainable Future
Source Author(s)/Editor(s): Valentina E. Balas (Aurel Vlaicu University of Arad, Romania), Hari Mohan Pandey (Bournemouth University, UK), Mohd. Anshari Bin Ali (Universiti Brunei Darussalam, Brunei), Vineeta Singh (Chhatrapati Shahu Ji Maharaj University, Kanpur, India)and Alok Kumar (Chhatrapati Shahu Ji Maharaj University, Kanpur, India)
DOI: 10.4018/979-8-3373-3541-4.ch003
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Abstract
As wireless communication systems evolve to meet growing demands for high data rates and efficient connectivity, the integration of Non-Orthogonal Multiple Access (NOMA) with Orthogonal Frequency Division Multiplexing (OFDM) offers significant potential for enhancing system performance. This chapter presents a study on performance analysis of uplink and downlink transmissions in NOMA- OFDM systems, focusing on optimizing resource allocation for both data transmission and wireless power transfer (WPT). The system under consideration utilizes power splitting technology at mobile users to simultaneously decode information & harvest energy. We analyze the performance of the system by optimizing sub-carrier allocation, power allocation, and power splitting ratios to maximize the minimum total transmit rate for users in both uplink & downlink scenarios. The impact of imperfect CSI is also considered. We approximate the non-convex optimization problems for practical solution implementation.
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