5G New Radio

3PHY Layer

Mihai Enescu¹, Youngsoo Yuk², Fred Vook³, Karri Ranta-aho¹, Jorma Kaikkonen¹, Sami Hakola¹, Emad Farag³, Stephen Grant⁴, and Alexandros Manolakos⁵

¹Nokia Bell Labs, Finland

²Nokia Bell Labs, Korea

³Nokia Bell Labs, USA

⁴Ericsson, USA

⁵Qualcomm Technologies, Inc.

3.1 Introduction (Mihai Enescu, Nokia Bell Labs, Finland)

In the following two chapters we are following on the 5G new radio (NR) physical layer description as well as on the defined procedures utilizing the PHY elements. We are starting this chapter with two main design elements: the 5G waveform and the antenna architectures. These two are basic components of the new system especially from the perspective of defining a unified framework across the operating frequency bands, hence we tackle the challenges in selecting these technical components as well as describing the specified framework. Following the introduction of these two design points, we describe the basic system design components such as frame structure and resource allocation, synchronization signals, and broadcast channels, the physical random access channel (PRACH). The 5G NR reference signals have their dedicated chapters where Channel–state information reference signals (CSI-RS), DeModulation Reference Signals (DM-RS), phase tracking reference signal (PT-RS) and Sounding reference signals (SRS) are described in detail, including their downlink (DL) and uplink (UL) characteristics (where applicable). A short description on power control is also ...