In recent years, wireless LAN (WLAN) has gained popularity in a variety of locations. This has lead to development of high level security protocols for WLAN. The newest protocol IEEE 802.11i ratified to provide strong data encryption but it can not prevent Denial of Service (DoS) attacks on WLAN. This paper in a testbed, conducts an experimental framework to implement and quantify common types ...

صخلملا This study was designed to evaluate the cytotoxic effect ةتبن قارولأ يئاملا صلختسملا ةيمس ىدم ميقتل ةساردلا هذه تممص ايلاخ ضر MDA-MB231 و FaDu ةدملل ةيناطرسلا ايلاخلا ةجلا يف تابارطضاب صلختسملا اذهب لختسم ص ملا ةتبن قارولأ يئا © 2009 Jordan Journal of Biological Sciences. All rights reserved

OFDM, MC-CDMA and DS-CDMA are being researched vigorously as the prospective signaling technique for the next generation mobile communications systems, which will be characterized by the broadband packet technology. With packet transmissions, hybrid ARQ (HARQ) will be inevitable for error control. HARQ with rate compatible punctured turbo (RCPT) codes is one of the promising techniques. Data ra...

In this paper, new direct constructions of Z-complementary code sets (ZCCSs) from generalized Boolean functions are proposed. the literature, most ZCCS based on lead to sequences power-of-two length. study, we show that our proposed methods result in ZCCSs both length and non-power-of-two Since monomials degrees more than 2 employed constructions, can be obtained. The constructed admit theoreti...

Introduction The success whereby variants of multi-carrier orthogonal frequency division multiplexing (Mc-OFDM), including Mc-CDMA, have been introduced in WLAN standards such as 802.11a and g (WiFi), as well as in broadband wireless access standards such as 802.16-2004 (WiMax), has spawned the idea of extending their application to next generation single-carrier wireless cellular systems that ...

Nowadays most communication networks like GSM, WLan or WiMAX are based on pre-existing infrastructure. These infrastructures are complicated, costly and difficult to deploy in very short time. Whereas Wireless Ad Hoc Networks are infrastructure-free self organizing networks which consist of cooperating nodes. These networks are highly desirable for various emerging applications for military and...

First generation Wireless LAN (WLAN) systems were all about basic standards, connectivity, and end-user benefits. They did not address a number of key enterprise requirements. Second generation WLAN systems are all about enhanced standards addressing security, Quality of Service (QoS), interoperability, enterprise-wide roaming, and architected solutions with placement of functionality for optim...

Quasi-complementary sequence sets (QCSSs) play an important role in multi-carrier code-division multiple-access (MC-CDMA) systems. They can support more users than perfect complementary MC-CDMA It is desirable to design QCSSs with good parameters that are a trade-off of large set size, small periodic maximum magnitude correlation and alphabet size. The main results construct new infinite famili...

—As the number of wireless subscribers rapidly increases guaranteeing the quality of services anytime, anywhere, and by any-media becomes indispensable. These services require various networks (such as CDMA2000 and Wireless LAN) to be integrated into IP-based networks, which further require a seamless vertical handoff to 4 th generation wireless networks. This paper presents a seamless vertical...