Achievable Rate of NOMA-Based Cooperative Spectrum-Sharing CRN over Nakagami-m Channels
Source abstract
Abstract
Efficient data dissemination is a key challenge for IoT applications. In this paper, we present an ergodic achievable rate analysis of the non-orthogonal multiple access (NOMA)-based cooperative transmission scheme in spectrum-sharing cognitive radio networks (CRNs). The transmission scheme consists of two phases, where the NOMA transmission strategy is employed at the secondary transmitter (ST) in the second phase to serve the primary receiver (PR) and secondary receivers (SRs). This cooperative spectrum-sharing transmission is favourable when the ST-PR link is strong and the ST faces a spectrum scarcity issue. To evaluate the performance of the network over Nakagami-m channels, ergodic achievable rates at PR and SRs are derived in closed forms, which can be used for any integer or non-integer value of fading index m. Finally, we compare the results of the analytical expressions with simulated results for validation.
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Research context
OpenAlex topics: Advanced Wireless Communication Technologies · Optical Wireless Communication Technologies · PAPR reduction in OFDM
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Affiliations
Department of Physics, COMSATS University, Islamabad 45550, Pakistan
Department of Electrical and Computer Engineering, COMSATS University, Islamabad 45550, Pakistan
Department of Computer Science and Engineering, Sejong University, Seoul 05006, Republic of Korea
Department of Smart Device Engineering, Sejong University, Seoul 05006, Republic of Korea
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