نتایج جستجو برای: peak power constraint

تعداد نتایج: 683376  

Journal: :CoRR 2017
Rania Morsi Vahid Jamali Derrick Wing Kwan Ng Robert Schober

In this paper, we study information-theoretic limits for simultaneous wireless information and power transfer (SWIPT) systems employing a practical nonlinear radio frequency (RF) energy harvesting (EH) receiver. In particular, we consider a three-node system with one transmitter that broadcasts a common signal to separated information decoding (ID) and EH receivers. Owing to the nonlinearity of...

Journal: :Electronics 2022

When the radar system detects low-altitude, small, slow-moving (LSS) targets, strong clutter interference from ground will cause false alarms and affect detection performance. In this paper, a phased array transmit beam steering algorithm is proposed to minimize radiation. By minimizing weighted vector norm choosing variable sidelobe levels, pattern can achieve deep notches in ground-related ar...

Journal: :Wireless Communications and Mobile Computing 2016
Zhen Tong Martin Haenggi

This paper presents a geometric analysis of the convergence condition for the FoschiniMiljanic power control algorithm. The Möbius transform is exploited for the first time to analyze the convergence conditions of the power control algorithm. A novel MAC scheme based on the Möbius transform is proposed for the link scheduling problem and proven to improve spatial reuse by scheduling links in pa...

Journal: :journal of advances in computer research 2014
mostafa ramzanpour hamdi abdi

nowadays, economic load dispatch between generation units with least cost involved is one of the most important issues in utilizing power systems. in this paper, a new method i.e. water cycle algorithm (wca) which is similar to other intelligent algorithm and is based on swarm, is employed in order to solve the economic load dispatch problem between power plants. wca is used to solve complicate...

Journal: :J. Inf. Sci. Eng. 2008
Shih-Hsu Huang Chun-Hua Cheng

As the design complexity continues to increase, huge peak power has become an important concern. A widely used power management technique is to shut down unused operations. However, an unused operation cannot be shut down, unless all the operations involved in identifying the control/data flow of this operation have been scheduled before this operation. Therefore, operation scheduling has a sig...

2003
Mustafa C. Gursoy H. Vincent Poor Sergio Verdú

Transmission of information over a discrete-time memoryless Rician fading channel is considered. The noncoherent scenario, where neither the receiver nor the transmitter knows the fading coefficients, is assumed. If the input is subject to a peak-power constraint, it is shown that uniformly distributed phase is optimal and the capacity-achieving amplitude distribution is discrete with a finite ...

Journal: :EURASIP J. Wireless Comm. and Networking 2010
Antonio García-Zambrana Carmen Castillo-Vázquez Beatriz Castillo-Vázquez

A new upper bound on the capacity of powerand bandwidth-constrained optical wireless links over gamma-gamma atmospheric turbulence channels with intensity modulation and direct detection is derived when on-off keying (OOK) formats are used. In this free-space optical (FSO) scenario, unlike previous capacity bounds derived from the classic capacity of the well-known additive white Gaussian noise...

Journal: :CoRR 2008
Smarajit Das B. Sundar Rajan

— Space-time block codes from square complex orthogonal designs (SCOD) have been extensively studied and most of the existing SCODs contain large number of zeros. The zeros in the designs result in high peak-to-average power ratio and also impose a severe constraint on hardware implementation of the code while turning off some of the transmitting antennas whenever a zero is transmitted. Recentl...

In this paper a new integrated model of the dynamic environmental/economic dispatch (DEED) problem and emergency demand response program (EDRP) has been presented by which their interactions are investigated. DEED schedules the online generators power output over the whole dispatch period subject to some practical constraints so that the fuel costs and emission are optimized simultaneously. EDR...

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