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Dive into the research topics where Wahab Almuhtadi is active.

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Featured researches published by Wahab Almuhtadi.


canadian conference on electrical and computer engineering | 2009

Wireless network channel quality estimation inside reactor building using RSSI measurement of wireless sensor network

Soorena Merat; Wahab Almuhtadi

It has always been a technical challenge for operations service team to expand wireless network reception inside reactor buildings (RB) and their service wings (SW). This is driven by the volume of metal equipment inside the Reactor Buildings (RB) that blocks and somehow shields the signal throughout the link.


canadian conference on electrical and computer engineering | 2014

WiMAX architecture priority scheduling for multimedia applications

Ricky Wong; Emmanuel Jean-Pierre; Wahab Almuhtadi; Anand Srinivasan

Worldwide Interoperability for Microwave Access (WiMAX) is an architecture that provides the ability to assign priority for Quality of Service (QoS) allowing network operators to configure a network to provide maximum performance compared to conventional non-priority systems. In this paper, we address the demand for bandwidth by data-hungry multimedia devices by utilizing WiMAXs ability to schedule priority for network traffic. We present the results of application testing and implementation using WiMAX protocol where the main focus is to carry out and demonstrate how utilizing a priority scheduling system can benefit streaming real time multimedia. The results also validate how WiMAX technology is valuable to multimedia applications.


2014 International Conference on Computing, Networking and Communications (ICNC) | 2014

Aggregating Internet access in a mesh-backhauled network through MPTCP proxying

Thanh-Hieu Nong; Ricky Wong; Wahab Almuhtadi; Jordan Melzer

Mesh connectivity is part of the 802.11 wireless standards, and many commercial and community wireless networks use meshing as part of their internetwork backhaul. Typically, these networks use L2 or L3 meshing mechanisms to route user traffic along a unique path out of the mesh. Their designs are driven by coverage and wireless capacity concerns, with wired backhaul links assumed to be high capacity. In this work we consider networks in which the wireless mesh links have comparable data-rates to the wired backhaul and ask how users can achieve high data-rates in practice. For these networks, we develop an opportunistic backhaul aggregation technique based on MPTCP and demonstrate it on Linux gateways.


international conference on wireless communications and mobile computing | 2013

WiMAX network with Quality of Service for streaming multimedia applications

Ricky Wong; Wahab Almuhtadi; Anand Srinivasan

WiMAX technology provides a Quality of Service (QoS) system that allows system operators to configure a network to provide maximum performance compared to conventional Best Effort (BE) systems. In this paper, we address the increase in number of data rich mobile devices and the performance issues associated with Video On Demand (VOD) multimedia traffic over a WiMAX network. We present the results of application testing using WiMAX protocol where the main focus is to show how utilizing a QoS system can benefit streaming real time multimedia. The results show how WiMAX technology is beneficial to multimedia applications.


radio and wireless symposium | 2008

The use of explicit congestion notification to shape traffic of an intelligent satellite system

Wahab Almuhtadi; Devin R. Murphy; Brian Cheng

Since the official standardization of explicit congestion notification (ECN) in 2001, the differentiated service (DS) bits 6 and 7 in packets are now classified for purposes of shaping and prioritization. These classifications are used to mark packet streams for controlling traffic flow in an intelligent satellite system (ISS). Using a forward link connection between a transmitting ground terminal to a geostationary satellite (GEO) acting as a relay, to a receiving hub back on the earth; a traffic shaping software which evaluates the ECN type or classification is used to control traffic flow and the results are observed.


canadian conference on electrical and computer engineering | 2015

Comparison of simulated and real network traffic results for multimedia streaming over WiMAX networks with QoS scheduling

Natalia Gorbenko; Emmanuel Jean-Pierre; Wahab Almuhtadi; Anand Srinivasan

Multimedia streaming is one of the main Internet services which tendency of significant growth stays unchanged. In this paper an empirical analysis for three most popular multimedia traffics (Videoconference, Video-on-Demand and Video-surveillance) has been conducted. The quality-of-service (QoS) performance has been evaluated in terms of distributed throughput for these three most popular internet services over a fixed Worldwide Interoperability for Microwave Access (WiMAX) network. Measurement scenarios relate to cases where the wireless broadband link is used as a backhaul connection to the Internet. Typical cases of deployment are femtocell and connecting of rural areas where wired connections, such as fiber, are too expensive to be deployed.


data compression, communications and processing | 2011

QoS Performance Testing of Multimedia Delivery over WiMAX Networks

Douglas J. Reid; Anand Srinivasan; Wahab Almuhtadi

This paper addresses the important performance issues that arises when multimedia traffic is carried over WiMAX systems. In future, WiMAX will be used in conjunction with other wireless systems to bring a variety of multimedia services. This paper presents the results of application testing using commercially available WiMAX products. The main focus is to show the effectiveness of QoS capabilities in delivering streaming multimedia such as IPTV and similar media content. The results provide a good indication on the applicability of WiMAX for multimedia applications. These findings will be followed up by field trials with IPTV and other live stream media.


electrical power and energy conference | 2009

Energy saving by using newly designed automated solar powered evaporative air cooler (ASPEAC)

Abdul Al-Azzawi; Wahab Almuhtadi

The mechanical load of the current evaporative air cooler is the main cause of consuming high energy. This cause prompted us to search for new ways to improve the evaporative air-cooler in terms of energy efficiency, water use efficiency, life, maintenance, and dependence on utility power. As a result, we designed, constructed, and tested a new automated solar powered evaporative cooler that considerably improves on existing designs on all the above-mentioned areas. Test results from the modified cooler based on the new design show that it delivered air with noticeably higher humidity and lower temperature than the standard design.


integrated network management | 2015

Autoconfiguration for faster WiFi community networks

Kelvert Ballantyne; Wahab Almuhtadi; Jordan Melzer

Commercial community wireless networks usually rely on wireless donors to give away Internet access while at home in exchange for access while they are mobile. The donors who make up the network get nothing immediate in return for providing Internet access. In this paper, we explore automatic configuration for a model of community networks in which donors mesh with each other and can aggregate Internet access from their peers with their own. To make the speed gains from access aggregation work for normal internet users, we use Multi-Path TCP (RFC 6824), proxying TCP traffic to MPTCP as needed. We examine the association, addressing, discovery, and routing challenges involved with self-configuring faster community networks, presenting IPv4 and IPv6 solutions to them.


International Journal of Biometrics | 2011

Artificial finger detection by spectrum analysis

Shoude Chang; Jeff Secker; Qinghan Xiao; Brittany Reid; Alexander Bergeron; Wahab Almuhtadi

To prevent fingerprint spoofing attack, a simple, effective and low-cost approach for distinguishing artificial fingers from real ones based on spectrum analysis is presented in this paper. We measured the spectral features of both artificial and real fingers. The results show that near infrared images of fingers are sufficient to distinguish real fingers from artificial ones, while near ultraviolet images can be used to detect the surface details of fingers. We present a practical and simple algorithm based on these features that can successfully distinguish between real and artificial fingers regardless of the race of the test subject.

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Shoude Chang

National Research Council

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Anand Srinivasan

University of North Carolina at Chapel Hill

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Costel Flueraru

National Research Council

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