A challenging problem in Cognitive radio is that the secondary users in cognitive radios must be able to detect primary users under low signal-to-noise ratio (SNR) and dispersive channel. Spectrum sensing based on auto-correlation of the received signal samples being more prone to correlate under dispersive condition, has been investigated. Simplified theoretical expressions for probability of ...

It is proved that innovations in the field of energy are a priority for sustainable development at all levels economy. The purpose this work to build cognitive model enterprise based on saving. Cognitive-linguistic analysis has been used as main method forming system substantiation managerial decisions. choice management decisions industrial enterprises basis saving, which determined by buildin...

Computational prediction of origin of replication (ORI) has been of great interest in bioinformatics and several methods including GC Skew, Z curve, auto-correlation etc. have been explored in the past. In this paper, we have extended the auto-correlation method to predict ORI location with much higher resolution for prokaryotes. The proposed complex correlation method (iCorr) converts the geno...

Assuming a first-order auto-regressive model for the auto-correlation structure between observations, in this paper, a transformation method is first employed to eliminate the effect of auto-correlation. Then, a maximum likelihood estimator (MLE) of a step change in the parameters of the transformed model is derived and three separate EWMA control charts are used to monitor the parameters of th...

This paper investigates cluster formation in decentralized sensor grids and focusses on predicting when the cluster formation converges to a stable configuration. The traffic volume of inter-agent communications is used, as the underlying time series, to construct a predictor of the convergence time. The predictor is based on the assumption that decentralized cluster formation creates multiagen...

Spread-spectrum communication, with its inherent interference attenuation capability, has over the years become an increasingly popular technique for use in many different systems. They have very beneficial and tempting features, like Antijam, Security, and Multiple accesses. This thesis basically deals with the pseudo codes used in spread spectrum communication system. The cross-correlation an...