Chapter 22: The Relay Channel

Learning Objectives

• Formulate the relay channel model and distinguish full-duplex from half-duplex operation
• Derive the cut-set upper bound on relay channel capacity using the max-flow min-cut principle
• Prove the achievability of decode-and-forward via block-Markov encoding and backward decoding
• Prove the achievability of compress-and-forward using Wyner-Ziv coding at the relay
• Understand compute-and-forward as lattice-based relaying using the Nazer-Gastpar framework
• Analyze the diamond network as a multi-relay extension and connect to noisy network coding