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TWC
2010
14 years 11 months ago
Temporal Spectrum Sharing Based on Primary User Activity Prediction
Abstract--In this paper we investigate the opportunistic spectrum access in temporal domain where a secondary user shares a radio channel with a primary user during the OFF period ...
Ki Won Sung, Seong-Lyun Kim, Jens Zander
DCC
2002
IEEE
16 years 4 months ago
On-Line Adaptation in Image Coding with a 2-D Tarp Filter
On-line adaptation to nonstationary distributions is essential to good performance in image coding. Fixed-size contexts (with adaptive tables) are also widely used, in conjunction...
Patrice Simard, David Steinkraus, Henrique S. Malv...
140
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NORDSEC
2009
Springer
15 years 11 months ago
Towards True Random Number Generation in Mobile Environments
In our paper, we analyze possibilities to generate true random data in mobile devices such as mobile phones or pocket computers. We show how to extract arguably true random data w...
Jan Bouda, Jan Krhovjak, Vashek Matyas, Petr Svend...
ICIP
2008
IEEE
15 years 11 months ago
MAP-MRF approach for binarization of degraded document image
We propose an algorithm for the binarization of document images degraded by uneven light distribution, based on the Markov Random Field modeling with Maximum A Posteriori probabil...
Jung Gap Kuk, Nam Ik Cho, Kyoung Mu Lee
ISCAS
2008
IEEE
179views Hardware» more  ISCAS 2008»
15 years 11 months ago
Direction of arrival estimation for speech sources using fourth order cross cumulants
— In many applications where speech separation and enhancement is of interest, e.g. conferencing systems, mobile phones and hearing aids, accurate speaker localization is importa...
Mikael Swarding, Benny Sallberg, Nedelko Grbic