Due to nonhomogeneous spread of sunlight, sensing nodes possess nonuniform energy budget in rechargeable wireless sensor networks. An energy-aware workload distribution strategy is therefore necessary to achieve good data accuracy subject to energy-neutral operation. Our previously proposed energy aware sparse approximation technique (EAST) can approximate a signal, by adapting sensor node sampling workload according to…
Category: MS THESIS IN OMNET
Impact of Dirty Devices on CDMA Network Coverage and Capacity
The introduction of cellphones with poor receiver sensitivity, known as dirty devices, to the Code Division Multiple Access (CDMA) cellular network results in a reduction in cell edge coverage, degraded capacity, and higher drop-call rates. This poor network performance has a negative impact on customer experience and satisfaction, which may result in increased churn for…
An Order Optimal Policy for Exploiting Idle Spectrum in Cognitive Radio Networks
In this paper, a spectrum sensing policy employing recency-based exploration is proposed for cognitive radio networks. We formulate the problem of finding a spectrum sensing policy for multiband dynamic spectrum access as a stochastic restless multiarmed bandit problem with stationary unknown reward distributions. In cognitive radio networks, the multiarmed bandit problem arises when deciding where…
Reliability and Survivability Analysis of Artificial Cobweb Network Model Used in Low-voltage Power-line Communication System
In order to verify the feasibility of the artificial cobweb model used in low-voltage power line communication (LVPLC) routing to improve the reliability of LVPLC, the all- terminal reliability of the artificial cobweb model has been calculated based on the factorization method in this paper. Specifically,Analysis shows that the proposed artificial cobweb shows much better…
Ultimate boundedness of non-autonomous dynamical complex networks under impulsive control
This paper is concerned with the ultimate boundedness problem of non-autonomous complex networks with different dynamical nodes by using the impulsive control method. Some ultimate boundedness and asymptotical stability criteria for the non-autonomous complex networks with different dynamical nodes under impulsive control are obtained by using Lyapunov functions. The results show that not only unstable…