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CORR
2008
Springer
189views Education» more  CORR 2008»
13 years 7 months ago
Algorithms for Dynamic Spectrum Access with Learning for Cognitive Radio
We study the problem of dynamic spectrum sensing and access in cognitive radio systems as a partially observed Markov decision process (POMDP). A group of cognitive users cooperati...
Jayakrishnan Unnikrishnan, Venugopal V. Veeravalli
ICC
2007
IEEE
14 years 1 months ago
A Novel Transmitter-Based Selective-Precoding Technique for DS/CDMA Systems
— In this paper a new transmitter precoding technique is presented that outperforms conventional precoding by making use of a portion of the interference between the users in a C...
Christos Masouros, Emad Alsusa
VTC
2008
IEEE
115views Communications» more  VTC 2008»
14 years 1 months ago
Graph-Based Turbo DeCodulation with LDPC Codes
—Turbo DeCodulation is the combination of iterative demodulation and iterative source-channel decoding in a multiple Turbo process. The receiver structures of bit-interleaved cod...
Birgit Schotsch, Laurent Schmalen, Peter Vary, Tho...
GLOBECOM
2006
IEEE
14 years 1 months ago
An Evaluation of Ultra Wideband Technology for Indoor Ranging
Abstract— Ultra wideband technology shows promise for precision ranging due to its fine time resolution to resolve multipath fading and the presence of lower frequencies in the ...
Camillo Gentile, Alfred Kik
ICASSP
2008
IEEE
14 years 2 months ago
HMM adaptation using a phase-sensitive acoustic distortion model for environment-robust speech recognition
In this paper, we present a new approach to HMM adaptation that jointly compensates for additive and convolutive acoustic distortion in environment-robust speech recognition. The ...
Jinyu Li, Li Deng, Dong Yu, Yifan Gong, Alex Acero