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Software Defined Radios

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Software Defined Radios
Revised Outline of the Report:
I. Introduction to Software Defined Radios
A. History
B. Definition
C. Basic Components
II. Operating Principles of SDRs
A. Ideal concept
B. SDR Receiver Architecture
a) Superheterodyne Receiver
b) Digital Down Conversion
C. SDR Transmitter Architecture
a) Digital Up Conversion
III. Common SDR Implementations
IV. SDR Software
V. Advantages and Trade-Offs in using SDRs
A. Performance Parameters
VI. Current Usage
VII. SDRs of the Future
References:

l Software-defined radio, Wikipedia, the free encyclopedia l An Introduction to Software Defined Radios, Jeff Blaine, ACOC, July 2009 l Software Defined Radio Theoretical Analysis and Design, Regulagadda Srinivasa Adiya and Suresh Angadi, International Journal of Engineering Trends and Technology (IJETT), Volume 4, Issue 5, May 2013 l Structures and Theories of Software Antennas for Software Defined Radio, Ryuji Kohno, IEICE Trans. Commun., Vol.E83-B, No.6, June 2000 l Telecommunication Breakdown: Concepts of Communication Transmitted via Software-Define Radio, C. Richard Johnson Jr and William A. Sethares, Prentice-Hall, February 2003

SOFTWARE DEFINED RADIOS radio communication system wherein implementations that should be done in hardware are instead made in software personal computer with sound card,ADCs, RF Front End military and cellphone services

HISTORY
“digital receiver” : DoD Laboratory, 1970
Midas-software baseband analysis tool: Gold Room, TRW, California
“software radio”: Garland Texas Division of E-Systems 1984
Joe Mitola,1991: true software based transceiver
SPEAKeasy-military software radio:Wayne Bonser, et al, Rome Labs
Hoeher and Lang, Germany,1988: first software based radio transceiver design and implementation
Stephen Blust: redefining software radio, 1995

SPEAKEasy-military project, initiated one of the first public software radios -aim: use programmable processing for more than 10


References: “digital receiver” : DoD Laboratory, 1970 Midas-software baseband analysis tool: Gold Room, TRW, California Stephen Blust: redefining software radio, 1995 SPEAKEasy-military project, initiated one of the first public software radios
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