5G Communication Networks and Modulation Schemes for Next-Generation Smart Grids

Abstract

Future wireless communication systems should have the ability to accommodate large number of mobile users increasing day by day. Moreover, various high-speed mobile applications such as online video streaming and online gaming, interconnection of different wireless devices for Internet of Things (IoT) are also some of the key requirements must be fulfilled. Hence, next-generation 5G wireless communication systems and smart grid (SG) communication systems requires high data rate, low latency, high spectral efficiency, low out-of-band (OOB) radiation, low power consumption, secure connectivity and ability to accommodate more number of users as well as diversified wireless devices distributed in large geographical regions for different mobile applications with maintaining uninterrupted connectivity at high speed. More sophisticated signaling schemes are required to overcome the limitations of orthogonal frequency-division multiplexing (OFDM), which is widely accepted by many researchers as one of the potential modulation schemes for 3.5G and 4G wireless standards. Even some of the multicarrier modulation schemes suitable for 5G applications, which work well at the frequency range of around 28 GHz, may not be suitable for millimeter wave (mmWave) frequency range of 60–90 GHz. Hence, in this chapter a comprehensive analysis of various types of potential waveforms such as generalized frequency-division multiplexing (GFDM), filter bank multicarrier (FBMC), universal filtered multicarrier (UFMC), and some of the extended version of OFDM, which can be used in 5G wireless communication systems. Some single-carrier modulation schemes suitable for mmWave are studied and discussed. Various issues for implementing these new waveforms and their advantages and disadvantages are also discussed. Smart grid (SG) communication technologies can be more reliable, secure and faster by using some of the modern signaling schemes. Finally, some of the standards of SG and its applications are discussed.