The Software Communications Architecture: two decades of software radio technology innovation
Claude Belisle, Vince Kovarik, Lee Pucker, Mark Turner
What began more than 20 years ago as a U.S. Department of Defense project aimed at implementing a radio system that could be reprogrammed on the fly to support multiple waveforms has evolved to become a widely adopted, versatile, and industry-changing architecture. The resulting Software Communication Architecture has now been deployed in more than 400,000 radios worldwide. This article explores the evolution of the SCA starting with its origins back in the SPEAKEasy Program to the upcoming release of SCA 4.1.
The Software Communications Architecture (SCA) is an implementation-independent architectural framework that specifies a standardized infrastructure for a software defined radio (SDR). Initially developed and published by the U.S. Department of Defense (DoD), the SCA is maintained by the Joint Tactical Networking Center (JTNC) in collaboration with various industry partners and organizations, such as the Wireless Innovation Forum . The specification has significantly influenced the evolution of the SDR domain, and its concepts have been used within multiple industries, products, and countries worldwide as depicted in Fig. 1 .