156 search results - page 27 / 32 » Opportunistic Spectrum Access for Energy-Constrained Cogniti... |
100
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WCNC
2010
IEEE
15 years 1 months ago
2010
IEEE
Abstract—In cognitive mobile multihop relay (CMMR) network, the mobile user as the primary user is allocated with the channel for transmitting data. Relay station as the secondar...
102
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WOWMOM
2009
ACM
15 years 4 months ago
2009
ACM
Abstract— Spectrum-agile radios, also known as cognitive radios, have a great potential to improve spectrum utilization by enabling dynamic access to the spectrum. A key challeng...
104
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JSAC
2008
14 years 9 months ago
2008
Abstract--The concept of cognitive radio (or secondary spectrum access) is currently under investigation as a promising paradigm to achieve efficient use of the frequency resource ...
TCOM
2010
14 years 8 months ago
2010
Abstract—This paper considers an uplink time division multiple access (TDMA) cognitive radio network where multiple cognitive radios (secondary users) attempt to access a spect...
106
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GLOBECOM
2010
IEEE
14 years 7 months ago
2010
IEEE
In a cognitive radio network, the full-spectrum is usually divided into multiple channels. However, due to the hardware and energy constraints, a cognitive user (also called second...