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TSP
2008
87views more  TSP 2008»
15 years 6 months ago
Joint Data Detection and Channel Tracking for OFDM Systems With Phase Noise
This paper addresses the problem of data detection in orthogonal frequency division multiplexing (OFDM) systems operating under a time-varying multipath fading channel. Optimal det...
Stelios Stefanatos, Aggelos K. Katsaggelos
CL
2002
Springer
15 years 6 months ago
Security boundaries in mobile ambients
A new notion of security boundary is introduced to model multilevel security policies in the scenario of mobile systems, within Cardelli and Gordon's "pure" mobile ...
Chiara Braghin, Agostino Cortesi, Riccardo Focardi
PUC
2002
107views more  PUC 2002»
15 years 6 months ago
Location Models from the Perspective of Context-Aware Applications and Mobile Ad Hoc Networks
Location models are crucial to location-aware applications. In this paper we present two approaches for modeling location information in an infrastructure-based and an ad hoc netwo...
Martin Bauer, Christian Becker, Kurt Rothermel
SIGOPS
2002
69views more  SIGOPS 2002»
15 years 6 months ago
On the value of threshold signatures
Threshold signature schemes are examples of threshold cryptosystems, as introduced by Desmedt, [4]. The purpose of this paper is to present a rather simple alternative to threshol...
Niklas Borselius, Chris J. Mitchell, Aaron Wilson
TIT
2002
65views more  TIT 2002»
15 years 6 months ago
Existence and construction of noncoherent unitary space-time codes
We consider transmission using transmit and reception using receive antennas in a wireless environment assuming that neither the transmitter nor the receiver knows the channel coef...
Vahid Tarokh, Il-Min Kim