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124
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CORR
2008
Springer
15 years 2 months ago
2008
Springer
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...
114
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TIP
2008
15 years 2 months ago
2008
The local polynomial approximation (LPA) is a nonparametric regression technique with pointwise estimation in a sliding window. We apply the LPA of the argument of cos and sin in o...
166
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TIP
2008
15 years 2 months ago
2008
Abstract--Hyperspectral images present some specific characteristics that should be used by an efficient compression system. In compression, wavelets have shown a good adaptability...
101
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TIT
2008
15 years 2 months ago
2008
In this paper, we propose a new class of low-rate error correction codes called repeat-zigzag-Hadamard (RZH) codes featuring simple encoder and decoder structures, and flexible cod...
113
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TC
2002
15 years 2 months ago
2002
This paper describes a group communication system called the timewheel group communication system that has been designed for a timed asynchronous distributed system model. The tim...