5G: Radio

5G: Radio

Ravi Sekhar Yarrabothu (Vignan's University, India)
Copyright: © 2018 |Pages: 30
DOI: 10.4018/978-1-5225-2799-2.ch002
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In evolution towards a successful mobile communications, the radio technology plays major role and the chosen radio technology should be spectrally efficient, robust and reliable. OFDM provided the much needed spectral efficiency, reliability, robustness and scalability for LTE, compared to the previous access methods such as TDMA, FDMA, and CDMA. For 5G, we should look for more spectrally efficient and massively scalable radio technology to cater to IoT and high bandwidth applications. The objective of this chapter is to introduce the 5G radio system, its challenges from both user and network perspective, and the key disruptive technologies for 5G – such as carrier aggregation, waveform engineering, full duplex, Multi-RAT, flexible networks, and Massive MIMO. Finally, the chapter discusses the current developments in 5G radio research.
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Challenges For 5G Radio Systems

5G networks need to present the opportunity for the operators to launch the new services, efficiently and cost-effectively, thus creating an ecosystem for technical and business innovation. In addition, the 5G infrastructures provides a customized network solutions to support vertical markets such as automotive, energy, food and agriculture, healthcare, etc. In addition, it is essential to accelerate the delivery of services to all the involved stakeholders. Compared to the evolution of earlier generations of mobile networks, 5G networks require not only improved networking solutions but involves sophisticated integration of massive computing and storage infrastructures

There are three fundamental requirements for building 5G wireless radio networks:

  • Capabilities for supporting massive capacity and massive connectivity.

  • Support for an increasingly diverse set of services, application and users all with extremely diverging requirements for work and life.

  • Flexible and efficient use of all available non-contiguous spectrum for wildly different network deployment scenarios.

Challenges for 5G are broadly categorized into two:

  • User-driven,

  • Network-driven.

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