96 search results - page 16 / 20 » Resource allocation for spectrum underlay in cognitive radio... |
PERCOM
2009
ACM
14 years 1 months ago
2009
ACM
—The primary function of a cognitive radio is to detect idle frequencies or sub-bands, not used by the primary users (PUs), and allocate these frequencies to secondary users. The...
GLOBECOM
2010
IEEE
13 years 4 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...
INFOCOM
2009
IEEE
14 years 1 months ago
2009
IEEE
—Dynamic spectrum access has been proposed as a means to share scarce radio resources, and requires devices to follow protocols that use resources in a proper, disciplined manner...
CISS
2008
IEEE
13 years 9 months ago
2008
IEEE
Cognitive radios permit dynamic control of physical layer resources such as transmission power and constellation size; these degrees of freedom can be employed to achieve significa...
GLOBECOM
2008
IEEE
14 years 1 months ago
2008
IEEE
— In this paper, we study QoS routing in wireless mesh networks with cognitive radios, which involves route selection, channel allocation and scheduling. It turns out to be a har...