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The design of efficient parallel pruned channel interleavers for 3GPP2 ultra mobile broadband (UMB) standard is considered. Channel interleaving in UMB is based on a bit-reversal algorithm in which addresses get mapped from linear order into bit-reversed order. To accommodate for variable packet lengths L, interleaving is done using a mother interleaver length of M = 2n, where n is the smallest integer...
In reference, some weak points in the design of the Shannon stream cipher and a differential distinguisher with complexity of O(214.92) keystream bits (i.e. O(29.92) keystream words) were presented. Another distinguishing attack based on a multidimensional linear transformation was presented in which require 2106.996 keystream words. Both of these attacks need to have access to the initial state that...
Quality Without Reference (QNR) index can be used to globally assess the quality of pansharpened images without the need of a reference high resolution multispectral (MS) image. The QNR index relies on local calculation of the Q4 index. Exploiting the local Q4 calculation property of the QNR index, we propose an injection model for pansharpening. The injection model determines the weight of extracted...
In ubiquitous environment, wireless sensor networks are increasingly being deployed to collect information from real world. For sharing huge amount of sensor data efficiently with diverse users, an information dissemination (INFOD) system is very important. In our previous work, we proposed an INFOD system integrated with sensor network and data grid as a publish/subscribe system for a ubiquitous-healthcare...
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