Low-profile coplanar waveguide antennas are successfully designed considering body-centric communications requirements. A finite difference in time-domain-based programme, which considers dispersion human tissues and antenna dielectric substrates, is developed for this purpose. Parametric simulations visualisation helped to acquire a greater understanding of radiation mechanisms. Consequently, ...

Due to unique characteristics of sensor nodes, choosing energy-efficient modulation scheme with low-complexity implementation (refereed to as green modulation) is a critical factor in the physical layer of Wireless Sensor Networks (WSNs). This paper presents (to the best of our knowledge) the first in-depth analysis of energy efficiency of various modulation schemes using realistic parameters i...

Cooperative spectrum sensing in cognitive radio (CR) networks is studied in which each CR performs energy detection to obtain a binary decision on the absence/presence of the primary user. The problem of interest is how to efficiently report and combine the local decisions to/at the fusion center under fading channels. In order to reduce the required transmission bandwidth in the reporting phas...

Let X(t) , t >1 O, be a Polish space-valued r a n d o m process defined on a probabi l i ty space (~, ~ , P), where ~ is the P-comple t ion of a countab ly generated a-field ~ o . Let ~(t + ) (the ' l ook-ahead ' a-field at t) and r ) (the ' l ook-back ' a-field at t) denote the P-comple t ions of c~>,a(X(y), t <~ y <~ s) and c~s<ta(X(y), s ~< y ~< t) respectively. The aim of this note is to p ...