Performance analysis of high dynamic range OFDM radio over fiber system for 5G/NR signals

Abstract

This paper provides a system architecture to evaluate the results of high dynamic range orthogonal frequency division multiplexing (OFDM) as a technique to transfer the 64-quadrature amplitude modulation (QAM) basebands signal over fiber, for the signals of the fifth generation/new radio (5G/NR) broadcasting at 28 GHz suitable for millimeter wave (mm-wave) applications. With this radio-over-fiber (RoF) system, the Optiwave Opti-system software (2024) is used for the assessment research. The integration of 64QAM-OFDM and RoF methods has led to a reduction in wireless network costs while maintaining a high data rate. This paper shows the RoF system design, for a 100 MHz 5G/NR signal broadcast at 28 GHz, results the largest dynamic range for millimeter wave applications. With an optical modulator design of the IF and LO signals, 64-QAM OFDM is possible. Better dynamic range may be achieved by using this approach to eliminate the error in optical bands before the photo recognition process. The optical spectrum of the transmitted signal, signal to noise ratio (SNR), error vector magnitude (EVM), and the cancelation diagram serve as the foundation for the performance analysis. Based on the acquired results, the system that is being presented is a strong contender for mobile communication systems in the context of 5G and beyond.