Improving UDP performance using intermediate QoD‐aware hop system for wired/wireless multimedia communication systems

Darabkh, Khalid A.; Aygün, Ramazan

doi:10.1002/nem.768

Cited by 33 publications

(19 citation statements)

References 25 publications

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“…Actually, saving a picture (or frame at this point) requires encoding it firstly into .PNG format where then the pixels generated are saved in array called "data," as shown in line 12. Through using System.IO library, we write, in line [13][14], that all pixels generated are saved in the application directory. Captivatingly, this sample code can save up to 10,000 pictures upon each interaction (or call).…”

Section: Code Samplesmentioning

confidence: 99%

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VRCDEA‐TCS: 3D virtual reality cooperative drawing educational application with textual chatting system

Darabkh

Alturk

Sweidan

2018

Comp Applic In Engineering

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Virtual reality (VR) products have noticeably improved in terms of quality and price in the last few years which made them more popular than ever. A number of wearable VR glasses are commercially available like Google cardboard. Moreover, leap motion is a small sensor that is connected to a USB port of a personal computer (PC) and allows the user to draw three dimensional (3D) shapes by tracking the movements of hands and fingers. On the other hand, Unity is a game engine which can be used to build 3D Games and VR applications using Java or C# programming languages. In this work, we present a novel 3D Virtual Reality Cooperative Drawing Educational Application with Textual Chatting System (VRCDEA‐TCS), which is a drawing application (app) that allows engineering students to interact together via text messages in addition to the ability to draw 3D models either individually or cooperatively whereas each student is capable of working remotely in a common 3D drawing area with the options of adding or removing parts to the design. Interestingly, the proposed app uses Google cardboard and leap motion sensor to create a VR drawing area and works on both windows PCs and Android smart phones. To this end, the app has shown a reliable and solid performance after being used by a large number of students of the school of engineering at the University of Jordan in which their responses were very positive and encouraging toward the features and characteristics included in our work.

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Section: Code Samplesmentioning

confidence: 99%

“…The modern life style has been noticeably affected by new technologies [3,13,14]. Communication devices and applications have literally reshaped our way of living [4,11,15,17].…”

Section: Introductionmentioning

confidence: 99%

VRCDEA‐TCS: 3D virtual reality cooperative drawing educational application with textual chatting system

Darabkh

Alturk

Sweidan

2018

Comp Applic In Engineering

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“…Computer applications have become an essential part of the educational process in almost every field . Science, mathematics, engineering, computer networking, medical specialties, and even literature are some of the fields which use computer programs in their courses to apply the skills taught theoretically in the class room in a practical way and to create a simulated environment which make the learning process more interactive, realistic, and even efficient compared to the old traditional methods . However, to take advantage of these programs, a basic knowledge of computer software is required by the student along with the physical ability to interact with the machine using input and output devices .…”

Section: Introductionmentioning

confidence: 99%

An efficient speech recognition system for arm‐disabled students based on isolated words

Darabkh

Haddad

Sweidan

et al. 2017

Comp Applic In Engineering

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Over the previous decades, a need has emerged to empower human‐machine communication systems, which are essential to not only perform actions, but also obtain information especially in education applications. Moreover, any communication system has to introduce an efficient and easy way for interaction with a minimum possible error rate. The keyboard, mouse, trackball, touch‐screen, and joystick are all examples of tools which were built to provide mechanical human‐to‐machine interaction. However, a system with the ability to use oral speech, which is the natural form of communication between humans instead of mechanical communication systems, can be more practical for normal students and even a necessity for arm‐disabled students who cannot use their arms to handle traditional education tools like pens and notebooks. In this paper, we present a speech recognition system that allows arm‐disabled students to control computers by voice as a helping tool in the educational process. When a student speaks through a microphone, the speech is divided into isolated words which are compared with a predefined database of huge number of spoken words to find a match. After that, each recognized word is translated into its related tasks which will be performed by the computer like opening a teaching application or renaming a file. The speech recognition process discussed in this paper involves two separate approaches; the first approach is based on double thresholds voice activity detection and improved Mel‐frequency cepstral coefficients (MFCC), while the second approach is based on discrete wavelet transform along with modified MFCC algorithm. Utilizing the best values for all parameters in just mentioned techniques, our proposed system achieved a recognition rate of 98.7% using the first approach, and 98.86% using the second approach of which is better in ratio than the first one but slower in processing which is a critical point for a real time system. Both proposed approaches were compared with other relevant approaches and their recognition rates were noticeably higher.

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“…On the other hand, there are works in the literature focused on efficient message or email file discarding for TCP/IP-based transmissions utilizing discrete-time [41,42] and continuous-time queuing systems [43][44][45][46][47][48][49]. It cannot be missed that an attempt was made for proposing discarding policies for asynchronous transfer mode networks utilizing AAL5 adaptation layer as reported by Darabkh and Aygun [30]. However, in discrete-time queuing systems, Zhou and Wang [41] proposed a model that is characterized by having a single server, a buffer with infinite capacity, correlated arrivals and general service times.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, proposing efficient video discarding polices for maintaining the buffer occupancy becomes of great interest and very compelling.In this paper, we propose two video discarding policies called eclectic early frame discarding with dependency (EEFD-wD) and intra-frame-aware early frame discarding with dependency (IFAEFD-wD) policies. Our policies are considered as novel extensions to the early frame discarding without dependency (EFD-woD) policy proposed by Darabkh and Aygun [30]. Complete details about our proposed policies (EEFD-wD and IFAEFD-wD) and the EFD-woD policy will be provided shortly.…”

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confidence: 99%

New video discarding policies for improving UDP performance over wired/wireless networks

2015

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SUMMARYMultimedia communication over wired and wireless networks becomes a compulsory need for many recent applications. To effectively react to the tremendous demand of video streaming over the Internet, videos are usually compressed by utilizing spatial and temporal redundancy. It is noteworthy to mention that compressing videos may degrade their quality if it is not investigated properly. In other words, as a consequence of exploiting redundancies, frame dependencies emanate, which make discarding frames, because of occupying the whole capacity of network elements, have severe implications on the video quality. Furthermore, transmitting videos over capacity-limited links owing to error-prone channels, power constraints and bandwidth variations will severely affect the video quality. Additionally, as the current coding schemes are characterized by being able to afford high compression efficiency, sensitivity to packet losses becomes untolerated. Therefore, insuring the perceived quality of the delivered videos to be always high in spite of aforementioned challenges is the primary focus of current researchers. In this paper, we propose efficient and novel video discarding policies that mainly aim to reduce the number of frames being lost through substitution of those frames that are very difficult or even impossible to decode at the receiver side. This is accomplished by controlling and maintaining the buffer occupancy of network elements. Our proposed policies are evaluated in terms of frameput, rate of non-decodable frames, peak signal-to-noise ratio, structural similarity index and average buffer occupancy. Our proposed policies behave very well and achieve a remarkable enhancement over what is closely connected in the literature.

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Improving UDP performance using intermediate QoD‐aware hop system for wired/wireless multimedia communication systems

Cited by 33 publications

References 25 publications

VRCDEA‐TCS: 3D virtual reality cooperative drawing educational application with textual chatting system

VRCDEA‐TCS: 3D virtual reality cooperative drawing educational application with textual chatting system

An efficient speech recognition system for arm‐disabled students based on isolated words

New video discarding policies for improving UDP performance over wired/wireless networks

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