Performance Comparison of FBMC Prototype Filters with Flexible Numerology for 5G V2I Wireless Networks

In 5th generation (5G) wireless networks high levels of spectral and energy efficiency, reliability and connectivity have to be maintained. Moreover, the ever-increasing requirements for high data rates and low latency, especially when ultra-reliable communications are envisaged, lead to the need for profound examination of wireless technologies and how to improve them. Additionally, from the physical layer perspective, the various types of modulation recently proposed for 5G networks will have the ability to offer well-controlled low levels of interference and reduced Out-of-Band (OOB) leakage, thus maintaining high spectral efficiency. In this paper, the pulse shaping approach implemented through prototype filters with flexible numerology in Filter Bank Multicarrier (FBMC) is studied in Vehicle-to-Infrastructure (V2I) communications characterized by high delay spreads and high velocities of the User Equipment (UE). The key benefits of FBMC technology over Orthogonal Frequency Division Multiplexing (OFDM) in 5G networks are discussed and the impact of flexible numerology-based FBMC on overall network performance is investigated.