This module provides a deep dive into the technical foundations of the 5G air interface, 5G New Radio (NR). We will explore the physical layer that makes high-speed, low-latency communication possible.

The journey begins with the 5G Spectrum and the OFDMA waveform, which constructs the 5G Resource Grid. You will learn how data is structured into frames, modulated, and coded (Modulation and Coding Schemes) for transmission. We'll demystify key procedures like Initial Access, facilitated by the Synchronization Signal Block (SSB), and the crucial role of the Scheduler in dynamic Resource Allocation.

This technical exploration covers the essential components—from Downlink Signals & Channels and flexible Bandwidth Parts (BWP) to Duplex methods—that collectively define the performance and capabilities of the 5G radio link.