A survey on increasing the capacity of 5G Fronthaul systems using RoF

Over the previous few decades, the need for wireless connectivity has exploded. Fifth generation (5G) com-munications, which have much more features than fourth-generation communications, will be widely imple-mented in the near future. Faster system capacity, faster data rates, lower latency, increased security, and improved quality of service (QoS) are just a few of the major issues that must be addressed beyond 5G. The goal of this research is to conduct a thorough investigation into ways for enhancing the capacity of 5G systems using Radio over Fiber (RoF). Existing mobile communication research is focused on 5G technologies. The major focus of this paper is the key provisions of the possible applications and technologies to be deployed for several wireless generations, particularly in 5G communication, its need and importance, the Centralized Radio Access Network (C-RAN) architecture used for 5G wireless systems, and the key points and analysis from resource allocation. When it comes to 5G technology, the mobile consumer has taken precedence over all others. Different modulation techniques and resource allocation schemes will be used to ensure this. This review study structured an assessment of the above-mentioned points made by many researchers, with the hope of assisting researchers in conducting further exploration in their next research to improve the field's general competency in handling resource allocation in 5G.