نتایج جستجو برای: transmission rate

تعداد نتایج: 1174877  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده مهندسی شیمی و نفت 1391

برای اطمینان از درستی کارکرد فرآیند های صنعتی، نیاز به ابزارهایی هست که وضعیت های نامطلوب عملکرد فرآیند را با دقت و سرعت بالا به راهبر فرآیند نشان دهد. یک روش موثر برای تشخیص و ردیابی عیوب، به کاهش اثر این عیوب، تأمین ایمنی عملیات، کم کردن عدم زمان کارکرد و کاهش هزینه های بازسازی کمک می کند. در حال حاضرbayesian belief networks (bbns) از جمله روش های مورد توجه جهت تعیین و تشخیص عیوب فرآیندها به ...

احمدی, سحر, رضائی لطیفی, علی,

Electromagnetically induced transparency is an optical phenomenon that is characterized by the elimination of the effect of a medium on a propagating beam of electromagnetic radiation in a specific frequency band. In this study, EIT was investigated at a proposed metamaterial with the dimensions milimeter and in the area of frequency of GHz. The computation results indicated that EIT with high ...

2007
George Kesidis

We consider an integrated-services communication network handling, in particular, best-effort data traffic and rate-regulated, delaysensitive variable bit-rate (VBR) traffic. From the user’s perspective, the pricing mechanism of the network may provide an incentive for the user to transmit best-effort packets in the real-time VBR channel, i.e., transmit best-effort packets “in-band” using some ...

2014
Hamada Esmaiel Danchi Jiang

In this paper, image transmission in underwater channels is considered. The images are encoded with forward error correction using an unequal error protection technique together with the Reed-Solomon codes and dynamic bit-rate allocation before transmitted. This paper proposes a novel rate allocation scheme for efficient image bit stream transmission in underwater acoustic channels with optimum...

Journal: :EURASIP J. Wireless Comm. and Networking 2018
Thu Phuong Nguyen Xuan Nam Tran Minh-Tuan Le Huan Xuan Nguyen

This paper introduces a new differential spatial modulation (DSM) scheme which subsumes both the previously introduced DSM and high-rate spatial modulation (HR-SM) for wireless multiple input multiple output (MIMO) transmission. By combining the codeword design method of the HR-SM scheme with the encoding method of the DSM scheme, we develop a high-rate differential spatial modulation (HR-DSM) ...

2003
Timothy K. Shih Louis H. Lin

It is important to transmit pictures efficiently in most Web sites, especially for those users with low bandwidth connections. In this demonstration, we propose a system which progressively transmits images using a very low transmission rate (as low as 15% in some cases). The transmitted images maintain a reasonable picture quality for the users to browse images quickly. Interested readers can ...

Journal: :IEEE Journal on Selected Areas in Communications 1996
Jean M. McManus Keith W. Ross

We introduce a specific transport and transmission scheme for video-on-demand (VoD) called constant-rate transmission and transport (CRTT). CRTT establishes a constant bit-rate (CBR) virtual channel between the video provider and the viewer’s set-top box (STB) and then transmits cells from the provider into this channel at a constant rate. Since we assume that the number of cells in a frame is ...

2006
Ioannis Z. Koukoutsidis Eitan Altman

Regulating the transmission rate of non real-time applications offers enhanced flexibility for QoS management and capacity control on a CDMA link. For a system working at saturation conditions, i.e., with the highest number of on-going transmissions, controlling data rates can further enhance its capacity. A more thorough investigation of this possibility and the trade-offs involved is presente...

2000
Veronique INGHELBRECHT Bart STEYAERT Herwig BRUNEEL Sabine WITTEVRONGEL

In ATM-based communication networks, the transmission links that interconnect the network nodes do not necessarily operate at the same transmission speeds. If the speed of the incoming link in a node exceeds the speed of the outgoing link, a rate adaptation buffer must be provided in order to avoid frequent cell loss. This paper presents an analytical queueing analysis of a rate adaptation buff...

Journal: :Neuron 2002
Peter J Simmons

Second-order neurons L1-3 of the locust ocellar pathway make inhibitory synapses with each other. Although the synapses transmit graded potentials, transmission depresses rapidly and completely so that a synapse only transmits when the presynaptic terminal depolarizes rapidly. The rate at which a presynaptic neuron depolarizes determines the rate at which a postsynaptic neuron hyperpolarizes, a...

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