This book constitutes the refereed proceedings of the 5th International Symposium on Ubiquitous Networking, UNet 2019, held in Limoges, France, in November 2019.The 17 revised full papers presented together with 1 short paper were carefully reviewed and selected from 41 submissions. The papers are organized in topical sections: ubiquitous communication technologies and networking; ubiquitous Internet of things; pervasive services and applications.

Modern digital receivers need computationally demanding processes that leads to prohibitive complexity and power consumption. The idea of lending analog blocks for realization of digital algorithms can sometimes relaxes the complexity and high power consumption of digital receivers. The issue of analog approaches in digital receivers is studied in this dissertation by concentrating on two areas; analog decoding and front-end processing.