This paper proposes a transmission capacity model with an overlaid regime that models the cognitive radio technology. We study a case of two coexisting wireless networks (the primary (PR) network and the secondary (SR) network) operating in the same geographical region and sharing the same spectrum and define the transmission capacity as a product of three signal propagation parameters: the den...

It is well-known that a single node in a network cooperates with one another employing cooperative communications can lead to transmission power saving. However, due to the additional processing power in receiving and retransmitting other’s information, not all nodes and cooperative protocols can achieve energy efficiency. To ensure energy efficiency of a cooperative network, a novel merge proc...

developing of mobile technologies in the field of health create a new branch of e-health called mobile-health. the goal of this study is evaluation of communications infrastructure for mobile-health. for this purpose, fuzzy analytic hierarchy process is used for modeling and ranking the criterions and applications. three main criteria in mobile communication network namely, data transmission, a...

To achieve much efficient multimedia transmission over an error-prone wireless network, there are still some problem must to be solved, especially in energy limited wireless sensor network. In this paper, we propose a joint detection based on Schur Algorithm for image wireless transmission over wireless sensor network. To eliminate error transmissions and save transmission energy, we combine Sc...

-In MWSN, security is one of the main constrain for transmission of data in network, in existing system arises drawback in security area of WSN. We implement the protocol named secure distributed reprogramming protocol (SDRP) for efficient transaction; it has limited bandwidth support of data (1.6Ghz) transmission in network. It also suitable only for homogenous network, SDRP is implemented in ...

This paper proposes an algorithm for transmission cost allocation (TCA) in a large power system based on nodal pricing approach using the multi-area scheme. The nodal pricing approach is introduced to allocate the transmission costs by the control of nodal prices in a single area network. As the number of equations is dependent on the number of buses and generators, this method will be very ti...

Network coding has been recently proposed as a new promising technique that can potentially improve the performance of a wireless multi-hop network significantly. However, most existing studies in this field perform network coding without considering the interplay between transmission power/rate and network coding gain. In many scenarios, the selection of the transmission power/rate brings big ...

Transmission network expansion planning (TNEP) is an important component of power system planning that its task is to minimize the network construction and operational cost while satisfying the demand increasing, imposed technical and economic conditions. Up till now, various methods have been presented to solve the static transmission network expansion planning (STNEP) problem. But in all of t...