Sciweavers

5741 search results - page 267 / 1149
» Accessibility in oriented networks
Sort
View
INFOCOM
2010
IEEE
15 years 5 months ago
Distributed Power Control for Cognitive User Access based on Primary Link Control Feedback
—We venture beyond the “listen-before-talk” strategy that is common in many traditional cognitive radio access schemes. We exploit the bi-directional nature of most primary c...
Senhua Huang, Xin Liu, Zhi Ding
PIMRC
2010
IEEE
15 years 5 months ago
Opportunistic channel access scheme for cognitive radio system based on residual white space distribution
We propose an opportunistic channel access scheme for cognitive radio-enabled secondary networks. In our work, we model the channel occupancy due to Primary User (PU) activity as a...
Manuj Sharma, Anirudha Sahoo
CHI
2010
ACM
16 years 2 months ago
After access: challenges facing mobile-only internet users in the developing world
This study reports results of an ethnographic action research study, exploring mobile-centric internet use. Over the course of 13 weeks, eight women, each a member of a livelihood...
Shikoh Gitau, Gary Marsden, Jonathan Donner
ICC
2009
IEEE
144views Communications» more  ICC 2009»
16 years 2 months ago
Power Allocation for Multi-Access Two-Way Relaying
—We consider a multi-access two-way relay network where multiple pairs of users exchange information with their pre-assigned partners with the assistance of an intermediate relay...
Min Chen, Aylin Yener
ADAPTIVE
2007
Springer
16 years 1 months ago
User Profiles for Personalized Information Access
Abstract. The amount of information available online is increasing exponentially. While this information is a valuable resource, its sheer volume limits its value. Many research pr...
Susan Gauch, Mirco Speretta, Aravind Chandramouli,...