The course addresses modern radio systems, their principal design, performance analysis, and the design methodology for both complete systems as well as important sub systems. Radio system design possibilities and limitations are discussed with a starting point in the properties of radio channels. Fundamental building blocks, required to meet different system specifications, are presented and their design is discussed. System requirements considered include data rate, bit error rate, reliability, cost, complexity, energy etc. Both traditional systems for mobile telephony as well as modern wireless systems for data, multimedia communications and Internet of Things (IoT) are addressed. New results in the area are introduced in the form of journal paper studies, where the last year's development is summarized in a number of presentations by the students themselves.