Video transmission over wireless links is becoming an interesting issue in modern communication networks. The paper presents a framework for modeling and providing an optimal solution to the problem of power control in transmission of embedded video over a single Wi-Fi link. The approach, based on a constrained optimization problem, is then compared with equal energy distribution, demonstrating...

Because the power systemload the randomness of the nature, power transmission of AC induction system has the low efficiency. In order to improve the transmission efficiency,the transmission efficiency influenced factors of the system is analyzed. Based on the current source power transfer system, DC/DC circuit for dynamic adjustment method is proposed. The method ensures that the transmission e...

Problem statement: Vehicular Ad hoc Networks (VANET) is one of the most challenging research area in the field of Mobile Ad Hoc Networks. Approach: In this research we proposed a dynamic power adjustment protocol that will be used for sending the periodical safety message. (Beacon) based on the analysis of the channel status depending on the channel congestion and the power used for transmissio...

Communication is usually the most energy-consuming event in Wireless Sensor Networks (WSNs). One way to significantly reduce energy consumption is applying transmission power control (TPC) techniques to dynamically adjust the transmission power. This article presents two new TPC techniques for WSNs. The experimental evaluation compares the performance of the TCP techniques with B-MAC, the stand...

In this paper, we propose a distributed transmission power control algorithm which cannot only prolong the lifetime of sensor nodes by saving the energy consumption but enhance the performance of packet delivery ratio. Besides, it can also reduce the interference between transmitting nodes. Before designing our algorithm, we firstly investigate the impact of link quality when utilizing differen...

Two algorithms for dynamically adjusting transmission power level on a per-node basis have been evaluated using a simulative approach. Network lifetime, convergence speed as well as resulting network connectivity have been obtained for these two algorithms using a particular indoor sensor environment. The network lifetime metrics of these two local algorithms are also benchmarked against power ...

In a wireless sensor network, sensor nodes are deployed in an ad hoc fashion and they deliver data packets using multihop transmission. However, transmission failures occur frequently in the multihop transmission over wireless media. Thus, a loss recovery mechanism is required to provide end-to-end reliability. In addition, because the sensor nodes are very small devices and have insufficient r...

Multiple access-based collision avoidance MAC protocols have typically used fixed transmission power, and have not considered power control mechanisms based on the distance of the transmitter and receiver in order to improve spatial channel reuse. In this paper, we motivate transmission power control and investigate the challenges involved in implementing power control in multiple access wirele...

Power management is an important constraint in the design of various loads in industries for automation. So if power consumption increases then the substation monitoring is very important for the purpose of controlling the hardware and software optimization with the help of PLC ladder logic system and SCADA were used. This technique in order to reach strong conclusion about their actual impact ...

We consider downlink transmission at high data rates in a multi-cellular code-division multiple-access (CDMA) network where signals are directed to a mobile station (MS) from antennas located at the same or different base stations (BSs). All antennas use different pilots and transmit data to individual MSs with specified powers when selected to do so. Two sources of error are found to degrade c...