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JSAC
2007
147views more  JSAC 2007»
14 years 9 months ago
Capacity limits of cognitive radio with distributed and dynamic spectral activity
Abstract— We investigate the capacity of opportunistic communication in the presence of dynamic and distributed spectral activity, i.e. when the time varying spectral holes sense...
Syed Ali Jafar, Sudhir Srinivasa
ICC
2007
IEEE
15 years 3 months ago
An ESPAR Antenna for Beamspace-MIMO Systems Using PSK Modulation Schemes
— In this paper the use of electronically steerable passive array radiator (ESPAR) antennas is introduced for achieving increased spectral efficiency characteristics in multiple-...
Antonis Kalis, Constantinos B. Papadias
WAPCV
2007
Springer
15 years 3 months ago
Embodied Active Vision in Language Learning and Grounding
Abstract. Most cognitive studies of language acquisition in both natural systems and artificial systems have focused on the role of purely linguistic information as the central co...
Chen Yu
CC
2010
Springer
117views System Software» more  CC 2010»
14 years 6 months ago
Efficiently Certifying Non-Integer Powers
We describe a randomized algorithm that, given an integer a, produces a certificate that the integer is not a pure power of an integer in expected (log a)1+o(1) bit operations unde...
Erich Kaltofen, Mark Lavin
FMSD
2006
131views more  FMSD 2006»
14 years 9 months ago
Specification and analysis of the AER/NCA active network protocol suite in Real-Time Maude
This paper describes the application of the Real-Time Maude tool and the Maude formal methodology to the specification and analysis of the AER/NCA suite of active network multicast...
Peter Csaba Ölveczky, José Meseguer, C...