375 search results - page 4 / 75 » Accessible Capacity of Secondary Users |
ICASSP
2011
IEEE
14 years 1 months ago
2011
IEEE
In this paper we consider an interference channel where a set of primary active users are cooperating through interference alignment over a constant multiple-input-multiple-output...
CISS
2008
IEEE
15 years 4 months ago
2008
IEEE
Cognitive radio is a desirable technique for secondary users to utilize the spectrum gray space. In order to avoid intolerable interference to primary users, the transmission powe...
GLOBECOM
2010
IEEE
14 years 8 months ago
2010
IEEE
Cognitive radios, which enable the coexistence on the same bandwidth of licensed primary and unlicensed secondary users, have the potential for dramatically increasing the efficien...
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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...
WICON
2008
14 years 11 months ago
2008
We consider the problem of efficient opportunistic spectrum access in cognitive radio networks where there are multiple secondary users trying to share access to multiple channels...