1234 search results - page 217 / 247 » Adaptive Groupware for Wireless Networks |
MOBIHOC
2005
ACM
14 years 8 months ago
2005
ACM
IEEE 802.11 MAC, called the Distributed Coordination Function (DCF), employs carrier sensing to effectively avoid collisions, but this makes it difficult to maximally reuse the sp...
WIOPT
2010
IEEE
13 years 7 months ago
2010
IEEE
We consider the problem of providing opportunistic spectrum access to secondary users in wireless cellular networks. From the standpoint of spectrum license holders, achieving ben...
PERCOM
2009
ACM
14 years 9 months ago
2009
ACM
This paper examines the recovery of user context in indoor environments with existing wireless infrastructures to enable assistive systems. We present a novel approach to the extra...
PERCOM
2004
ACM
14 years 8 months ago
2004
ACM
There are many navigation systems for visually impaired people but few can provide dynamic interactions and adaptability to changes. None of these systems work seamlessly both ind...
WOWMOM
2009
ACM
14 years 3 months ago
2009
ACM
The proliferation of mobile computing devices and local wireless networks has promoted a growing interest in location-aware systems. The problem with existing positioning techniqu...