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A rapid acquisition technique for impulse radio

A novel rapid acquisition algorithm, called sequential block search, is proposed for impulse radio systems, which can reduce the mean acquisition time considerably. The algorithm is compared to the conventional serial search algorithm and output statistics for both algorithms are derived for a binary phase-shift keyed random time hopping impulse radio system. The mean acquisition time formulas are

Development of Second and Third Generation Bioelectronics

The field of research dealing with the integration of biomolecules with electronic elements to form functional devices is called ‘‘bioelectronics’’. Bioelectronics based on mediated electron transfer (MET) between the biological element and the electrodes are designated as “second generation” while the one based on direct electron transfer (DET) is specified as “third generation”. Implanted bioele

Fast Authentication in a Collaborative Wireless Access Network

In this paper, we propose a novel inter-domain fast-authentication scheme based on a concept of "trust clouds". A trust cloud is formed among neighbouring access points based on a relationship among the owners of the access points. Fast-authentication for inter-domain sites is achieved through cooperation among the trust cloud members. The approach is distributed without a central authentication s

Physical bounds and summation rules in antenna theory

Although the concept of physical bounds for electrically small antennas was first introduced more than half a century ago by Wheeler and Chu it continuous to receive attention and still there is only a partial knowledge of these bounds. Most of the research effort in this field are based on the ideas of a stored energy in the different partial waves as introduced by Chu and, hence, suffers from th

Discourse markers and the segmentation of spontaneous speech - The case of Swedish men 'but/and/so'

Prosodic and lexical correlates of ‘clause-like’ and ‘paragraph-like’ boundaries associated with the Swedish discourse marker men ‘but/and/so’ are examined. Men-tokens in spontaneous monologues were labelled as to their boundary-status, first using text-only data. The ‘strong’ tokens (labelled identically by all labellers) were subsequently seen to be correlated with clear differences in the proso