5G and Beyond: Key Challenges and Emerging Trends in Wireless Communication Systems    

Authors : Ashish Kumar Gupta, Dr. Gaurav Bhandari, Prof. (Dr.) Ramesh Chand Ramola, Dr. Shabnam Arad

Publishing Date : 2026

DOI : NSP/EB/GTRDBAIP/2026/Ch-06 (No DOI-Only Chapter ID)

ISBN : 978-93-49381-76-6

Pages : 41-66

Chapter id : NSP/EB/GTRDBAIP/2026/Ch-06

Abstract : The evolution of wireless communication systems toward fifth-generation (5G) networks has enabled unprecedented capabilities in terms of enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), and massive machine-type communication (mMTC). Despite these advancements, 5G systems face significant challenges related to spectrum utilization, energy efficiency, network scalability, and reliability under dense deployment scenarios. This chapter presents a comprehensive technical analysis of the key challenges in 5G and beyond wireless communication systems, including spectrum scarcity in sub-6 GHz and millimeter-wave bands, hardware constraints in massive multiple-input multiple-output (MIMO) systems, interference management in ultra-dense heterogeneous networks, and security vulnerabilities in software-defined and virtualized network architectures. Furthermore, the role of advanced technologies such as beamforming, network slicing, edge computing, and artificial intelligence (AI)-driven network optimization is critically examined as potential enablers for next-generation systems. The chapter also explores emerging paradigms beyond 5G, including terahertz (THz) communication, intelligent reflecting surfaces (IRS), and integrated space-air-ground-sea networks envisioned for sixth-generation (6G) systems. The objective of this chapter is to provide a technically rigorous overview of challenges and solution frameworks, offering insights into the design and deployment of future wireless communication infrastructures.

Keywords : 5G Communication, 6G Networks, Wireless Communication, Massive MIMO, Millimeter Wave, Network Slicing, Spectrum Management, AI in Wireless Networks.

Cite : Gupta, A. K., Bhandari, G., Ramola, R. C., & Arad, S. (2026). 5G and Beyond: Key Challenges and Emerging Trends in Wireless Communication Systems (1st ed., pp. 41-66). Noble Science Press. https://noblesciencepress.org/chapter/nspebgtrdbaip2026ch-06

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