Results 251 to 260 of about 9,446,943 (295)

Power conservation and path efficiency for multicast ad hoc networks

2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577), 2004
For power-constrained wireless ad hoc networks, a crucial issue in routing and multicasting is to conserve as much power as possible while still achieving good throughput performance. In this paper, we propose a class of power-efficient multicasting algorithms using a new cost function that jointly optimizes power conservation and path efficiency ...
J. Ye, Kee Chaing Chua, W. C. Wong 0001
openaire   +2 more sources

Power efficient range assignment in ad-hoc wireless networks

2003 IEEE Wireless Communications and Networking, 2003. WCNC 2003., 2004
We study the problem of assigning transmission ranges to the nodes of ad hoc wireless networks to minimize power consumption while ensuring network connectivity. We give an exact branch and cut algorithm based on a new integer linear program formulation solving instances with up to 35-40 nodes in 1 hour; a proof that min-power symmetric connectivity ...
Ernst Althaus, Gruia Calinescu, Ion I. Mandoiu, Sushil K. Prasad, N. Tchervenski, Alexander Zelikovsky   +5 more
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Power-added efficiency errors with RF power amplifiers

International Journal of Electronics, 1997
This paper investigates the errors that can result when applying two different definitions of power-added efficiency to RF power amplifiers. The first definition is generic to all multiple-port networks and is simply the ratio of the total output power to total input power. The second definition is specific to RF power amplifiers and widely regarded as
openaire   +1 more source

Class-F power amplifier with high power added efficiency for 900MHz

2014 2nd International Conference on Electronic Design (ICED), 2014
This paper presents a design and implementation of a Power Amplifier for GSM Transmitters using a high efficiency class-F type. A typical class-F circuit has been designed, simulated and implemented using GaAs pHEMT transistor at a frequency of 900MHz. The proposed design achieves 95.5% of theoretical Power Added Efficiency and 28.9dBm output power. To
M. Al-Ajmi, A. Al-Blushi, R. Al-Mamari, Z. Nadir, M. Bait-Suwailam   +4 more
openaire   +1 more source

Distributed Power Control for Energy Efficient Routing in Ad Hoc Networks

Wireless Networks, 2004
In this paper, distributed power control is proposed as a means to improve the energy efficiency of routing algorithms in ad hoc networks. Each node in the network estimates the power necessary to reach its own neighbors, and this power estimate is used both for tuning the transmit power (thereby reducing interference and energy consumption) and as the
BERGAMO, PIERPAOLO, MANIEZZO, Daniela, A. TRAVASONI, GIOVANARDI, Alessandra, MAZZINI, Gianluca, ZORZI, Michele   +5 more
openaire   +4 more sources

Highly Efficient InP/GaAsSb DHBTs With 62% Power-Added Efficiency at 40 GHz

IEEE Electron Device Letters, 2011
We report the large-signal load-pull characterization of InP/GaAsSb double heterojunction bipolar transistors (DHBTs) with fT and fMAX cutoff frequencies as high as 380 and 320 GHz, respectively. Measurements were performed at 40 GHz in a passive load-pull system to characterize the output power and power-added-efficiency (PAE) performance. A PAE of 60%
TEPPATI, VALERIA, Zeng Y., Ostinelli O., Bolognesi C. R.   +3 more
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Power Efficient MAC Protocol for Mobile Ad Hoc Networks

2013
Maximizing throughput and battery power are the key factors to design an efficient power control MAC protocol. Power management in MANET is a critical issue, since these are powered by batteries. It is also due to mobility of MANETs, the size of batteries is of great concerns.
Sohan Kumar Yadav, D. K. Lobiyal 0001
openaire   +1 more source

Power-Efficient Reliable Routing Protocol for Mobile Ad-Hoc Networks

IEICE Transactions on Communications, 2005
Since mobile ad-hoc networks have certain constraints, including power shortages, an unstable wireless environment, and node mobility, more power-efficient and reliable routing protocols are needed. Accordingly, this paper propose a new routing protocol, PERRA (Power Efficient Reliable Routing protocol for mobile Ad-hoc networks), that includes the ...
Kyoung-Jin Kim, Sang-Jo Yoo
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A Power Efficient QoS Provisioning Architecture for Wireless Ad Hoc Networks

2006 IEEE International Conference on Communications, 2006
The work presented in this paper1 focuses on a new approach in provisioning Quality of Service (QoS) in ad hoc wireless networks, aiming at making the best use of ad hoc networking as a candidate technology for next generation wireless networks. Specifically, a cross-layer QoS provisioning architecture for wireless ad hoc networks is introduced and ...
Didem Gözüpek, Symeon Papavassiliou, Nirwan Ansari, Jie Yang 0008   +3 more
openaire   +2 more sources

Energy Efficiency of High Power Accelerators for ADS Applications

2016
One important issue identified by the 2014 comprehensive nuclear fuel cycle Evaluation & Screening report* that was chartered by the US Department of Energy was the impact of the electricity required to operate the accelerator on the overall efficiency of an Accelerator Driven System (ADS).The objective of this paper is to contribute some ...
Haj Tahar, Malek, Méot, Francois, Peggs, Steve   +2 more
openaire   +1 more source