Transcript Study and Implementation of Flexible Physical Layer

Study and Implementation of
Flexible Physical Layer
Algorithms for a SoftwareDefined Radio Platform
David Ho
Mentor: Professor H. Jafarkhani
Professor H.Yousefi’zadeh
Outline
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Why Future Wireless Telecommunication
Systems Require Flexibility?
What is the Software Defined Radio (SDR)?
Universal Software Radio Peripheral (USRP) in
the context of SDR
Project Goals
Progress and Future Steps
Why Future Wireless Telecommunication
Systems Require Flexibility?
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Implement multi-standard solutions
Enable legacy systems
Allow upgradable solutions during lifetime
Facilitate introduction of new services
Reduce of production costs
Speed-up time to market
Optimize performance after recognizing
operational environment during run-time
What is the Software Defined
Radio (SDR)?
SDR is a radio communication system that
replaces some dedicated hardware with
software on general computers or embedded
systems
 Due to the software implementation, SDR is
characterized by increased flexibility
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USRP in the context of SDR
USRPs are inexpensive, computer hosted
hardware solutions for developing software
radios through GNU radio.
 Two USRP generations (USRP -1 and -2) are
available
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Project Goals
Achieve reliable transmission in a lower signalto-noise ratio (SNR) environment
 Increase throughput, reduce error-rate
 Increase the system’s operational range
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Progress and Future Steps
(1/2)
Progress:
 USRP-1 communication protocols have been
modified to be operable in USRP-2
 Interoperability between USRP-1 and USRP-2
has been achieved.
Progress and Future Steps
(2/2)
Future Steps
 Evaluate system performance in different
operational scenarios (e.g. line-of-sight,
scattering environment)
 Improve physical layer algorithms (e.g.
synchronization, channels estimation)
Thank you!
Questions?