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This chapter conveys a deeper understanding of the roots of the software radio. This includes the technical evolution that has resulted in today's emphasis on SDR, and it includes the management motivations toward realizing appropriately tailored implementations. The chapter begins with an introduction to technology-demographics, a method for studying architecture. The chapter then characterizes the need for software-radio architecture. Because of the intense interest of the commercial and military sectors, and because of the fragmentation of industry into competing groups, there are competing goals for software radio evolution within standards organizations. These goals are considered in some detail since they set the stage for the competition of technical ideas. The chapter concludes with a roadmap of software-radio architecture evolution, and a section of exercises for the reader. [ABSTRACT FROM PUBLISHER]

This chapter analyzes node-level software radio architecture. Attention turns to the internal functions, components, and design rules within a radio node. The node-level architecture analysis treats cost and other externally imposed design constraints (e.g., standards) as explicit design rules. The chapter concludes with exercises for the reader. [ABSTRACT FROM PUBLISHER]

The material covered in this chapter can reduce DSP hardware costs by a factor of 2 : 1 or more. Thus it is pivotal and in some sense the culmination of the SDR design aspects of this text. A section of reader exercises appears at the end of the chapter. [ABSTRACT FROM PUBLISHER]