Preface.- Chapter 1.- Introduction.- Chapter 2.- Spectrum Sensing for Half and Full-Duplex Cognitive Radio.- Chapter 3.- Dynamic Spectrum Access Algorithms without Common Control Channels.- Chapter 4.- Quantified Dynamic Spectrum Access Paradigm.- Chapter 5.- Secure Spectrum Management for Positive Train Control Operations using a Multi-tiered Cognitive Radio Network.- Chapter 6.- Centralized and Distributed Algorithms for Stable Communication...