17 search results - page 2 / 4 » Joint Rate Control and Spectrum Allocation under Packet Coll... |
ICASSP
2011
IEEE
12 years 8 months ago
2011
IEEE
A problem of joint optimal bandwidth and power allocation in cognitive networks under fading channels is considered. It is assumed that multiple secondary users (SUs) share the sp...
WOWMOM
2009
ACM
13 years 11 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...
VTC
2008
IEEE
13 years 11 months ago
2008
IEEE
— We consider a resource allocation problem for spectrum sharing in cognitive radio networks. Specifically, we investigate the joint subchannel, rate and power allocation for se...
INFOCOM
2012
IEEE
11 years 7 months ago
2012
IEEE
Cognitive radio (CR) techniques improve the spectrum utilization by exploiting temporarily-free frequency bands (i.e., in the time domain). The spectrum utilization can be boosted...
INFOCOM
2012
IEEE
11 years 7 months ago
2012
IEEE
—In this paper we study the resource allocation in OFDM-based cognitive radio (CR) networks, under the consideration of many practical limitations such as imperfect spectrum sens...