The paper evaluates the security status of Wireless Local Area Networks (WLAN) used by residents and companies in two major cities of the United Arab Emirates (UAE). The goal is to study the security vulnerabilities that lie beneath the usage of WLAN by the public in UAE. Data will be collected from various populated sites and will be analyzed to better understand the wireless security awarenes...

Although playing real-time multi-player games online over the Internet became more and more popular in the past few years, people still enjoy meeting for so-called “LAN Parties” because of higher social interaction. As the number of participants increases, the deployment of the required infrastructure (i.e. the LAN) however gets more and more bothersome. With the current availability of compute...

Abstrucr-IEEE 802.11a is a new high-speed physical layer (PHY) defined for the 5 GHz U-NI1 hands as a supplement to the existing IEEE 802.11 wireless LAN (WLAN) standard. In this paper, we give an overview of the IEEE 802.11a Orthogonal Frequency Domain Multiplexing (OFDM) PHY with eight different PHY rates as well as the distributed coordination function (DCF) of the IEEE 802.11 MAC, then deri...

This paper presents an application of DSP technology to an emerging service: Voice-over-IP in Wireless LAN networks. In this context, energy consumption is a key factor and DSP’s contribute to considerable savings compared to general purpose CPU. ST Nomadik TM application processor embeds an ARM core and DSP based accelerators for Multimedia processing. This System on Chip can be used in combin...

This paper presents an adaptive reservation protocol called Centralized Adaptive Reservation (CAR) for supporting voice and data communications over a wireless ATM LAN. The protocol has two novel features, which may also be applied in other wireless LANs. First, with the aim of enhancing access efficiency, the access probability of the voice terminals is varied dynamically based on the predicte...

Network coding is known to benefit the downlink retranmissions by the AP in a wireless LAN from exploiting overhearing at the client nodes. However, designing an efficient and practical retranmission scheme remains a challenge. We present an (asymptotically) optimal scheme, ECR, for reducing the downlink retransmissions by the AP in a wireless LAN from exploiting overhearing at the client nodes...

With the popularity of portable devices, public Internet access service using wireless LAN has started in many countries. In the public wireless LAN network, since re-authentication latency during handoff affects the service quality of multimedia applications, minimizing authentication latency is very important in order to support real-time multimedia applications on the wireless IP network. In...

Distributed audio and video applications require end-to-end performance guarantees from the underlying networks for smooth delivery of real-time media streams. The end-to-end nature dictates that real-time support be built into both wide-area and local-area networks. With the enormous growth of portable computers equipped with networking capabilities, it is important to develop real-time protoc...

Digital Video Broadcasting over Terrestrial Networks (DVB-T) is an increasingly popular option for receiving TV in Europe, with computer hardware available to capture the MPEG-2 [2] compressed digital streams. 802.11 wireless networks are also becoming commonplace in the home, and so it is a logical extension to allow digital TV to be distributed over a wireless LAN. In such an environment, it ...