There are many similarities between the situations in which the armed forces and first responders must operate. In both cases, rapid response and mobility are required as well as instant and secure communications, and all of this must take place where functioning infrastructure might not exist and the environment may be changing by the minute or second.
Preface FPGAs have become an increasingly important resource for software radio systems. Programmable logic technology now offers significant advantages for implementing software radio functions such as DDCs (Digital Downconverters). Over the past few years, the functions associated with DDCs have seen a shift from being delivered in ASICs (Application-Specific ICs) to operating as IP (Intellectual Property) in FPGAs.
After its initial implementation in civil mobile telephones, the concept of a software defined radio (SDR) has now started making inroads in radios used for military applications. This document provides an introduction to SDR as used for military radios and presents the relevant T and M solutions offered by Rohde and Schwarz.