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Cognitive Radio Technology, which utilizes the
"opportunistic" spectrum resource management
concept, could represent a breakthrough approach and key
building block for the next generation of communication
technology. At GEDC, Cognitive Radio technology has been installed and is being utilized in
partnership with the Samsung Design Center, which is located near GEDC in the Technology Square Research Building.
The purpose of the CR testbed is to develop
and evaluate:
- spectrum sensing technology, which is the
most critical technology in CR;
- demonstration of innovative communication systems;
- verification of RF/analog circuits and systems;
- interoperability between various communication systems.
All of the functional blocks in the CR system,
including signal generation and MODEM and
RF/analog front end, are designed to be operated by
integrated software for acceleration of response/test
time, as well as for ease of management and expansion.
In addition to spectrum-sensing technology,
the system is capable of instant testing/evaluation at
the algorithm level of the communication system
and of the RF/Analog IC. GEDC, teamed with Samsung
Design Center, has proposed its own spectrum
sensing technologies to the IEEE 802.22 working
group, which is the first CR-oriented communication
standard. In addition, results from CR have been contributed
to the European Computer Manufacturers Association (ECMA) committee.
In the future, after broadcasting and communication
technology have either merged or become undifferentiated,
CR has the potential to be a key enabling technology. To
lead this trend, GEDC will expand its current communication-oriented
system to a pure "Comm-Broadcast Fusion"
system by adding broadcasting capability.
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