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5G systems are designed to provide connectivity for anyone at any time and from any location. The 5G communication systems are expected to be in practice in 2021. Several new technologies, like multiple-input multipleoutput, high-speed train, vehicle-to-vehicle, and millimeter-wave communications are researched for 5G systems. Many research projects going under the usage enabling of 5g tech to a high-speed train. High-speed trains (HSTs) have recently emerged as an emerging fast-moving transportation system and also increased HST passengers' desire for broadband services, presenting significant difficulties to HST wireless communication systems. However, offering continuous internet for broadband passengers onboard trains at high speeds and across long rural distances remains a challenge. Here we are going to discuss enabling 5G to a high-speed train. This article initially offers a comprehensive …