Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. A hands-on guide and mathematical approach to tackling security challenges and overall performance issues in 5G-based IoT communications The Internet of Things (IoT) provides connectivity and data exchange anytime and anywhere among a wide variety of physical objects such as sensors, vehicles, and mobile phones. This book is a concise guide to securing wireless Internet of Things (IoT) systems at the communications level, covering wireless spectrum sharing systems, smart grid communications, machine-to-machine communications, and uplink/downlink communications for IoT applications. The methods, optimization problems, mathematical solutions, algorithms, and programming codes in the book can be applied directly or extended as countermeasures for different IoT vulnerabilities. Coverage includes: •Detailed solutions for tackling communications security threats •Secure spectrum auction design  •Spectrum trading architecture •Distributed optimization algorithm •Latency-centric IoT uplink framework •MATLAB code for IoT spectrum sharing and IoT smart grid •Joint carrier aggregation for IoT spectrum sharing systems •Anomaly detection and classification