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— Spatially-coupled low-density parity-check (LDPC) codes, which were first introduced as LDPC convolutional codes, have been shown to exhibit excellent performance under low-complexity belief-propagation decoding. This phenomenon is now termed threshold saturation via spatial coupling. Spatially-coupled codes have been successfully applied in numerous(More)
—In this paper, we analyze the coexistence of a primary and a secondary (cognitive) network when both networks use the IEEE 802.11 based distributed coordination function for medium access control. Specifically, we consider the problem of channel capture by a secondary network that uses spectrum sensing to determine the availability of the channel, and its(More)
—Low-density parity-check (LDPC) convolutional codes have been shown to exhibit excellent performance under low-complexity belief-propagation decoding [1], [2]. This phenomenon is now termed threshold saturation via spatial coupling. The underlying principle behind this appears to be very general and spatially-coupled (SC) codes have been successfully(More)
Introduction This Taxonomy defines the many potential security threats to VoIP deployments, services, and end users. The overall goal is to help drive VoIP security awareness with the press, industry and public. In particular this Taxonomy provides a detailed structure for technical vulnerabilities that informs the following constitutencies: • Press and(More)
I/O traces are good sources of information about real-world workloads; replaying such traces is often used to reproduce the most realistic system behavior possible. But traces tend to be large, hard to use and share, and inflexible in representing more than the exact system conditions at the point the traces were captured. Often, however, researchers are(More)
In this paper we present an overview of a system that translates English into Malayalam by means of Statistical Machine Translation (SMT) models. The knowledge source that is used to build the translation system includes a monolingual corpus of Malayalam and a bilingual corpus of English/ Malayalam. Various pre-processing mechanisms like suffix separation(More)
It is well known that multipliers consume most of the power in DSP computations. Hence, it is very important for modern DSP systems to develop low-power multipliers to reduce the power dissipation.. In this paper, we presents low power Column bypass multiplier design methodology that inserts more number of zeros in the multiplicand thereby reducing the(More)
We have shown earlier that heat shock renders human colon cancer cells resistant to curcumin-induced apoptosis, but the contribution of individual heat shock proteins (hsps) to this resistance has not been tested. High expression of hsp27 and hsp70 in breast, endometrial and gastric cancers has been associated with metastasis, poor prognosis and resistance(More)
There is increasing evidence that muscle-derived precursor cells can, under appropriate conditions, give rise to other than myogenic cell types. Transplantation into the embryonic ventricular zone provides a unique opportunity to study the migration and differentiation of non-neural somatic progenitor cells in response to instructive cues within the(More)