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<p>A growing demand for high-capacity, reliable, and low-latency communication networks to support emerging technologies (like 5G, IoT, and smart cities) requires new solutions. Integrating optical and wireless networks through Radio-over-Fiber (RoF) and DAPSK–OFDMA (Differential Amplitude Phase Shift Keying–Orthogonal Frequency Division Multiple Access) modulation addresses the limitations of standalone wireless or optical systems. RoF extends the reach of wireless networks by leveraging optical fiber’s capacity, while DAPSK–OFDMA enhances spectral efficiency and transmission reliability. This research aims to develop a scalable, high-performance heterogeneous network that can meet bandwidth, latency, and coverage requirements of recent broadband applications, especially in densely populated areas. The performance of the proposed network is analyzed by transmitting bit stream, text, and image. The transmission of images and text is significant compared to bit streams because they represent real-world data types commonly used in communication systems. Performance is evaluated through Bit Error Rate (BER) and Error Vector Magnitude (EVM), comparing wireless, PON (Passive Optical Networks)-only, and PON-RoF systems over various transmission distances (b2b, 25&#xa0;km, 50&#xa0;km), considering text, image, and audio data transmission.</p>

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DAPSK–OFDMA PON-based heterogeneous optical network with improved data transmission

  • 期刊论文

  • 发表日期：

    2026年4月8日

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  • R. Priyadharshini

摘要

A growing demand for high-capacity, reliable, and low-latency communication networks to support emerging technologies (like 5G, IoT, and smart cities) requires new solutions. Integrating optical and wireless networks through Radio-over-Fiber (RoF) and DAPSK–OFDMA (Differential Amplitude Phase Shift Keying–Orthogonal Frequency Division Multiple Access) modulation addresses the limitations of standalone wireless or optical systems. RoF extends the reach of wireless networks by leveraging optical fiber’s capacity, while DAPSK–OFDMA enhances spectral efficiency and transmission reliability. This research aims to develop a scalable, high-performance heterogeneous network that can meet bandwidth, latency, and coverage requirements of recent broadband applications, especially in densely populated areas. The performance of the proposed network is analyzed by transmitting bit stream, text, and image. The transmission of images and text is significant compared to bit streams because they represent real-world data types commonly used in communication systems. Performance is evaluated through Bit Error Rate (BER) and Error Vector Magnitude (EVM), comparing wireless, PON (Passive Optical Networks)-only, and PON-RoF systems over various transmission distances (b2b, 25 km, 50 km), considering text, image, and audio data transmission.