Wireless Communications: Principles and Practice

Lots of RF specialists consider that Theodore Rappaport wrote a masterpiece in the field of wireless engineering, and who am I to disagree?

"Wireless Communications: Principles and Practice" is essential for beginners and professionals, because it merges a well-laid theoretical foundation with many practical applications.

This is the book to get if you want to learn how wireless signals travel and behave while passing through different environments. You’d better know your math, though, because you’ll also learn about path loss models, shadowing, and multipath propagation.

Moving on, Rappaport discusses a broad array of modulation techniques, starting with (what else?) AM and FM, and then continuing with Phase Shift Keying (PSK) and Quadrature Amplitude Modulation (QAM) systems.

The book also discusses cellular concepts and design (5G, for example), without forgetting to tackle essential topics such as cell coverage, interference, and more.
If you want to master wireless communications and advanced math is not an obstacle, you should definitely get this book.