The document discusses Software Defined Radio (SDR), which is a radio communication system that utilizes software for modulation and demodulation of signals. It explores SDR applications in various fields such as mobile communications and military, as well as its advantages and disadvantages. Additionally, it outlines the evolution of SDR software and the functionalities of related Android applications.

1. MADHAV INSTITUTE OF TECHNOLOGY AND SCIENCE GWALIOR ( M.P.)
( SOFTWARE DEFINED RADIO )
DEEPAK LODHA
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B.TECH | ET | MITS | GWL
.

2. CONTENT:
▶ Why SDR ?
▶ Evaluation of SDR technology
▶ Application or Uses
▶ Basic diagram/component of SDR
▶ SDR software as well as Android application
▶ A practical view with SDR Set-Top Box( Receiver )
DEEPAK LODHA
0901ET181019
B.TECH | ET | MITS | GWL

3. ▪What is software defined radio?
• Radio communication system which uses software for the 1st
modulation and demodulation of radio signals
• wireless communications devices
• Wireless around 1890
• More complexity and vulnerability
• Joseph Mitola
President Yang met with DR. Mitola
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4. ▪ SDR uses or Application
✔ Mobile communications
✔ Military ( speakeasy )
✔ Research & development
✔ Requires both hardware and software skills
.
✔ Basic platform may be too expensive
✔ Converters limit top frequencies
▪ Disadvantage
DEEPAK LODHA
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5. ▪ Basic diagram and some components
»Radio Node
» Software
» Physical Layer
» Data Link Layer
» Transmitter
» Receiver
DEEPAK LODHA
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B.TECH | ET | MITS | GWL

6. DEEPAK LODHA
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▪ SDR software and android application
• The Software Radio (1980-1985)
• National Instruments – LabVIEW (1986 - present)
• US Military – SPEAK easy I (1992-1995)
• Massachusetts Institute of Technology – Spectrum Ware
(1994-1999)
• US Military – SPEAK easy II (1995-1997)
• Microsoft – SORA (2009 - present)
• Karlsruhe Institute of Technology – MATLAB / Simulink/ USRP
(2009)
• MathWorks – MATLAB / Simulink / USRP (2011 - present)

7. DEEPAK LODHA
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▪ Android mobile application for SDR
.
⁕Range fluctuate b/w 50Mhz-
2Ghz
⁕ AM,FM,DBV-Arial, SSB….etc
depend hardware
⁕ Capture live frequencies
⁕ May be illegal in some
country

8. DEEPAK LODHA
0901ET181019
B.TECH | ET | MITS | GWL