In this paper, UWB technology operating in broad frequency range of 3.1-10.6 GHz has shown great achievement for highspeed wireless communications. to satisfy the UWB system requirements, a band pass filter with a broad pass band width, low insertion loss, and high stop-band suppression. UWB band-pass filter (BPF) with wireless local area network (WLAN) notch at 5.8 GHz and 3-dB fractional band...

GFGDFGDFGDFG ABSTAAAAR Wireless networking is inherently insecure. From jamming to eavesdropping, from man-in the middle to spoofing, there are a variety of attack methods that can be used against the users of wireless networks. Modern wireless data networks use a variety of cryptographic techniques such as encryption and authentication to provide barriers to such infiltrations. However, much o...

In heterogeneous wireless networks, wireless local area network (WLAN) is highly preferred by mobile terminals (MTs) owing to its high transmission bandwidth and low access cost. However, in high-speed environment, handover from a cellular network to a WLAN cell will lead to a high number of handover failures and unnecessary handovers due to the WLAN coverage limitation and will become worse at...

As Wireless Local Area Networks (WLANs) are rapidly deployed to expand the eld of wireless products, the provision of authentication and privacy of the information transfer will be mandatory. These functions need to take into account the inherent limitations of the WLAN medium such as the noisy wireless channel, limited bandwidth and limited computational power. In this paper, we introduce a to...

In recent years, the concept of nomadic computing has received considerable attention from the business community. As an early form of nomadic information environment (NIE), wireless local area network (WLAN) has gained tremendous popularity with organizations. Using mostly anecdotal evidences, WLAN equipment manufacturers and practitioners claimed that WLAN brought dramatic improvements in the...

Nowadays, the use of wireless technologies in industrial environments gains importance because of the many advantages (cost, mobility, etc) it can bring. Flexibility related with the nodes’ mobility, which are no longer “fixed by a cable”, is one of the greatest benefits provided by wireless technologies. Unfortunately, the state-of-the-art IEEE 802.11 Wireless Local Area Network (WLAN) technol...

With increase in ageing population, health care market keeps growing. There is a need for monitoring of health issues. Wireless Body Area Network (WBAN) consists of wireless sensors attached on or inside human body for monitoring vital health related problems e.g, Electro Cardiogram (ECG), Electro Encephalogram (EEG), ElectronyStagmography (ENG) etc. Due to life threatening situations, timely s...

There is increasing interest in wireless ad-hoc networks built from portable devices equipped with short-range wireless network interfaces. IEEE 802.11b WLAN (Wi-Fi) and IEEE 802.15.1 WPAN (Bluetooth) are popular wireless emerging technologies. These technologies migrates wired system applications into the wireless domain. Applications includes, computing, sensing, and communication. Growth in ...

Nowadays, public wireless local area networks (WLANs), commonly called hotspots, are being largely deployed by WISPs (Wireless Internet Service Providers) as a means of offering ubiquitous Internet access to their customers. Although a substantial number of solutions have been proposed to improve security, mobility and quality of service on the wireless area, access network management which is ...