نتایج جستجو برای: peak power constraint

تعداد نتایج: 683376  

1997
Jindrich Zejda

Electronic systems became an essential component of our lives. The demand for increased functionality is satisfied by higher integration which, however, make the design process more complex and introduces new problems. These problems must be considered in every step involved in the design of electronic systems. One of these steps is verification checking, whether what is manufactured will work ...

A. Falahati, M.-R. Ardestani,

A low complexity dynamic subcarrier and power allocation methodology for downlink communication in an OFDM-based multiuser environment is developed. The problem of maximizing overall capacity with constraints on total power consumption, bit error rate and data rate proportionality among users requiring different QOS specifications is formulated. Assuming perfect knowledge of the instantaneo...

Journal: :J. Inf. Sci. Eng. 2012
Junghoon Lee Hye-Jin Kim Gyung-Leen Park Mikyung Kang

This paper presents a design and evaluates the performance of a power consumption scheduler in smart grid homes or buildings, aiming at reducing the peak load in them as well as in the system-wide power transmission network. Following the task model consist of actuation time, operation length, deadline, and a consumption profile, the scheduler linearly copies the profile entry or maps a combina...

Journal: :international journal of smart electrical engineering 2015
sadegh etemad nasser mozayani

the use of renewable energy in power generation and sudden changes in load and fault in power transmission lines  may cause a voltage drop in the system and challenge the reliability of the system. one way to compensate the changing nature of renewable energies in the short term without the need to disconnect loads or turn on other plants, is the use of renewable energy storage. the use of ener...

Journal: :EURASIP J. Adv. Sig. Proc. 2010
Qijia Liu Robert J. Baxley Xiaoli Ma G. Tong Zhou

Orthogonal frequency division multiplexing (OFDM) has been widely adopted for high data rate wireless transmissions. By deploying multiple receiving antennas, single-input multiple-output(SIMO-) OFDM can further enhance the performance with spatial diversity. However, due to the large dynamic range of OFDM signals and the nonlinear nature of analog components, it is pragmatic to model the trans...

Journal: :Magnetic resonance in medicine 2014
Peter Kellman Daniel A Herzka Michael Schacht Hansen

PURPOSE To evaluate the error in T1 estimates using inversion-recovery-based T1 mapping due to imperfect inversion and to perform a systematic study of adiabatic inversion pulse designs in order to maximize inversion efficiency for values of transverse relaxation (T2) in the myocardium subject to a peak power constraint. METHODS The inversion factor for hyperbolic secant and tangent/hyperboli...

Journal: :IET Communications 2016
Jinghua Zhang Nam-Phong Nguyen Junqing Zhang Emi Garcia-Palacios Ngoc Phuc Le

In this paper, we investigate the effect of of the primary network on the secondary network when harvesting energy in cognitive radio in the presence of multiple power beacons and multiple secondary transmitters. In particular, the influence of the primary transmitter’s transmit power on the energy harvesting secondary network is examined by studying two scenarios of primary transmitter’s locat...

2015
Sakshi Sharma Gaurav Gupta

We study the resource allocation algorithm design for multiuser orthogonal frequency division multiplexing (OFDM) downlink systems with simultaneous wireless information and power transfer. The algorithm design is formulated as a non-convex optimization problem for maximizing the energy efficiency of data transmission (bit/Joule delivered to the users). In particular, the problem formulation ta...

2012
Satoshi Imamura Hiroshi Sasaki Naoto Fukumoto Koji Inoue Kazuaki Murakami

As power consumption being the first order constraint to build microprocessors, they are required to achieve high performance within the strictly limited power budget. For example, capping the peak power consumption is a strongly desired feature in large scale data centers or massive HPC machines. Future many-core processors are expected to host a variety of workloads which have different chara...

Journal: :CoRR 2010
Junwei Zhang Mustafa Cenk Gursoy

In the spectrum-sharing technology, a secondary user may utilize the primary user’s licensed band as long as its interference to the primary user is below a tolerable value. In this paper, we consider a scenario in which a secondary user is operating in the presence of both a primary user and an eavesdropper. Hence, the secondary user has both interference limitations and security consideration...

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