|Alguien dijo ...|
|Es de importancia para quien desee alcanzar una certeza en su investigación, el saber dudar a tiempo.|
Aristóteles(384 AD - 322 AD).
|Tektronix and Virginia Tech Collaborate On Advancement of Cognitive
BEAVERTON, Ore. - Tektronix, Inc. today announced joint research with the Mobile
and Portable Radio Research Group (MPRG) at Virginia Tech in the development of Cognitive Radio (CR) technology.
This extends a research relationship with Virginia Tech that began with developing integrated solutions for
characterizing and testing Software Defined Radio (SDR). CR is the evolution of SDR and the joint research is the
first effort to establish a test methodology for cognitive algorithms which will enable a radio to be aware of its
environment. The use of cognitive radio will provide flexible spectrum utilization to meet the dynamic needs of
commercial and military/government customers.
CR builds on SDR to adapt to changing communications protocols and
inserts a new element - the ability to recognize its environment and learn, by drawing on artificial intelligence.
CR can sense its environment and location and then alter its power, frequency, modulation and other parameters for
more efficient spectrum utilization - negotiating the best transmission path to overcome obstacles. In contrast,
today's radios are fixed to operate within spectrum blocks as authorized by a country's communications agencies.
Additionally, CR could, in theory, allow multidimensional reuse of spectrum in space, frequency and time,
significantly reducing the spectrum and bandwidth limitations that have impeded wireless technology expansion in the
United States and the world.
"The use of cognitive radio technology has the potential to vastly
improve the efficiency of spectrum usage at a time when there is a scarcity of available spectrum and wireless
communication services are rapidly increasing," said Jeff Reed, Professor and Deputy Director, Mobile and Portable
Radio Research Group (MPRG) at Virginia Tech. "Our joint research is the first of its kind and will provide a
repeatable test methodology for the testing and validation of Cognitive Radio software algorithms and we expect, in
the future, that this design will serve as a test bed for manufacturers to use in developing products. Tektronix
test technology is fundamental to the success of our research to validate the use and operation of cognitive radio
and we are very excited to continue to build on our relationship."
Test & Measurement Equipment
To Provide Validation for Cognitive Radio MPRG's Open Source SCA (Software Communications Architecture) OSSIE
implementation has already been successfully integrated with existing Tektronix equipment in support of SDR.
Tektronix provides a unique capability of real-time spectral and digital time-domain analysis tools. This integrated
approach, enables engineers to simultaneously evaluate the RF, base-band and DSP logic associated with a given
spectral event, a critical validation step in the design of Cognitive Radios. Tektronix will continue to assist in
providing test and measurement equipment in support of the OSSIE test bed for engineers doing Cognitive Radio
"We are pleased to be extending our relationship with Virginia Tech, one of the
nation's premier academic institutions," said Rich McBee, Sr. Vice President, Tektronix Communications Business.
"Test equipment is crucial to enable the development of efficient Cognitive Radio systems that marry artificial
intelligence with radio technology and drive innovation for the future of wireless communications."
Miércoles, 27 Julio, 2005 - 05:17