Sciweavers

646 search results - page 29 / 130
» A Spatially Dependent Communication Model for Ubiquitous Sys...
Sort
View
PIMRC
2008
IEEE
14 years 2 months ago
Carrier frequency dependent throughput analysis for impaired OFDM links under user mobility
—In this paper we present an analytical approach to evaluate the M-QAM bit error rate and carrier frequency dependent throughput of OFDM systems subject to various receiver impai...
Marco Krondorf, Gerhard Fettweis
SRDS
2003
IEEE
14 years 1 months ago
Group Communication Protocols under Errors
Group communication protocols constitute a basic building block for highly dependable distributed applications. Designing and correctly implementing a group communication system (...
Claudio Basile, Long Wang, Zbigniew Kalbarczyk, Ra...
JIPS
2010
110views more  JIPS 2010»
13 years 3 months ago
A License Audit Model for Secure DRM Systems in IP-based Environments
Communication devices aim to provide a multimedia service without spatial or temporal limitations in an IP-based environment. However, it is incapable of allowing for fair use by c...
Ui-Jin Jang, Hyung-Min Lim, Yong-Tae Shin
KI
2010
Springer
13 years 6 months ago
Positions, Regions, and Clusters: Strata of Granularity in Location Modelling
Location models are data structures or knowledge bases used in Ubiquitous Computing for representing and reasoning about spatial relationships between so-called smart objects, i.e....
Hedda Rahel Schmidtke, Michael Beigl
AAAIDEA
2005
IEEE
14 years 1 months ago
SOSIMPLE: A Serverless, Standards-based, P2P SIP Communication System
Voice over IP (VoIP) and Instant Messaging (IM) systems to date have either followed a client-server model or have required the use of clients that do not follow any VoIP or IM st...
David A. Bryan, Bruce Lowekamp, Cullen Jennings