01-06-2012, 04:35 PM
5G Based on Cognitive Radio
[attachment=23905]
Introduction:-
In the recent years the cognitive radio (CR) technology imposed itself as a very good solution to the increasing spectrum utilization.
This technology proposes the development of a new Radio type cognitive radio endowed with intelligence that senses, shares, and uses the(Spectrum opportunities) of the preexisting wireless networks, the channels that are not used by the licensed users.
Evolution from 1G to 5G
The first steps were made at the beginning of the ‘1980s’, with the first mobile standards Family development and implementation (the user was able to geographically move along its session period).
5G Based on Cognitive Radio
The related literature defines the 5G technology, especially by indicating the differences over the 4G and the necessary improvements needed to accept the evolution towards a new mobile telecommunications generation.
CR Technology:
Features and Research DirectionsBy definition, a CR is an “intelligent communication system that is aware of its surrounding Environment (i.e., outside world), and uses the methodology of understanding-by-building toLearn from the environment and adapt its internal states to statistical variations in the incoming stimuli by making corresponding changes in certain operating parameters (e.g., transmitpower,
carrier-frequency, and modulation strategy) in real-time, with two primary objectives.
Proposed Solution for 5G:
CR Based 5GThe traditional communications systems present (as basic characteristic) the partition into“access-network” and “core network” respectively.
The centralized manner of approaching the communication is no longer responding to the increasing user’s demands.
Increasing the Performance in WISDOM
5G is a high performance technology with high-band demanding applications and services, and without time or space limitations.
First of all, should be emphasized that a cognitive performance metric is more complex because of the dynamic, mobileandflexible CR networks nature.
[attachment=23905]
Introduction:-
In the recent years the cognitive radio (CR) technology imposed itself as a very good solution to the increasing spectrum utilization.
This technology proposes the development of a new Radio type cognitive radio endowed with intelligence that senses, shares, and uses the(Spectrum opportunities) of the preexisting wireless networks, the channels that are not used by the licensed users.
Evolution from 1G to 5G
The first steps were made at the beginning of the ‘1980s’, with the first mobile standards Family development and implementation (the user was able to geographically move along its session period).
5G Based on Cognitive Radio
The related literature defines the 5G technology, especially by indicating the differences over the 4G and the necessary improvements needed to accept the evolution towards a new mobile telecommunications generation.
CR Technology:
Features and Research DirectionsBy definition, a CR is an “intelligent communication system that is aware of its surrounding Environment (i.e., outside world), and uses the methodology of understanding-by-building toLearn from the environment and adapt its internal states to statistical variations in the incoming stimuli by making corresponding changes in certain operating parameters (e.g., transmitpower,
carrier-frequency, and modulation strategy) in real-time, with two primary objectives.
Proposed Solution for 5G:
CR Based 5GThe traditional communications systems present (as basic characteristic) the partition into“access-network” and “core network” respectively.
The centralized manner of approaching the communication is no longer responding to the increasing user’s demands.
Increasing the Performance in WISDOM
5G is a high performance technology with high-band demanding applications and services, and without time or space limitations.
First of all, should be emphasized that a cognitive performance metric is more complex because of the dynamic, mobileandflexible CR networks nature.