Preface

When multiple analog or digital signals are combined into one signal over a shared medium, it is called multiplexing or muxing. This is a well-known method in telecommunications and computer networking. It is widely applied in communication systems and the aim is to share a scarce resource, for example, a wire or optic fiber cable for telecommunication applications. The reverse process is necessary on the receiver's end to extract the information sent.

This book presents recent applications and advancements in multiplexing (MUX) and de-multiplexing (DEMUX) in optic and wireless communication applications. It examines signals and waveforms from different points of view for both orthogonal and non-orthogonal subcarrier scenarios.

I wish to acknowledge my late father. I hope this book makes him proud. I also wish to thank my mentors Prof. Max Ammann from the Technological University Dublin (TU Dublin) and Prof. Daniel Kilper from Trinity College Dublin (TCD) who helped me immensely in the last two years.

I acknowledge this publication is associated with CONNECT - the Science Foundation Ireland Research Centre for Future Networks and Communications and SFI Centre for Research Training in Advanced Networks for Sustainable Societies (ADVANCE CRT), Dublin, Ireland.

> **Somayeh Mohammady** School of Electrical and Electronic Engineering, Technological University Dublin (TUDublin), Dublin, Ireland

Section 1
