A compact microstrip-fed antenna with dual notched bands is proposed. First, a simple basic configuration is presented for Ultra Wide Band (UWB) applications and then the dual band notched structure is extended from the UWB one. The basic structure of the UWB antenna consists of a simple square radiating patch and a ground plane with a wide square slot on back of the substrate. A semi-circle sh...

This paper addresses the issue of the efficient interworking between a Wireless Local Area Network (WLAN) and a Wireless Metropolitan Area Network (WMAN), in particular High Performance Local Area Network (HiperLAN) and High Performance Metropolitan Area Network (HiperMAN) standards. The dual mode interworking must guarantee Quality of Service (QoS) through the whole system. One of the main con...

LTE is known as long term evolution, and it is fourth generation (4G) wireless network for mobile communication networks. LTE provides higher data rate, lower latency, and a simplified architecture. LTE system uses OFDMA-based multicarrier modulation, MIMO techniques, and other advanced features to greatly improve wireless services. WIFI stands for Wireless Fidelity, and refers to any type of W...

Over the past decade, wireless mobile communications technology based on IEEE 802.11 wireless local area networks (WLANs) has been adopted worldwide on a massive scale. However, as the number of wireless users has soared, so has the possibility of cyber crime, where criminals deliberately and actively break into WLANs with the intent to cause harm or access sensitive information. WLAN digital f...

Knowing consumers’ shopping paths is an essential part of successful retailing. Good space management requires accurate data about consumer behavior. Traditionally, these data have been collected through, for example, panel interviews, camera tracking, and in-store observation. Their nature is more or less subjective. Modern technology makes it possible to use more objective methods, such as wi...

Wireless local area network (WLAN) is a technology that combines computer network with wireless communication technology. The 2.4 GHz and 5 GHz frequency bands in the Industrial Scientific Medical (ISM) band can be used in the WLAN environment. Because of the development of wireless communication technology and the use of the frequency bands without the need for authorization, the application o...

The upcoming IEEE 802.11e is an extension of the 802.11 Wireless Local Area Network (WLAN) standard. We use this new standard with its priority provisioning mechanism to address fairness issues that occur when geographically co-located WLANs share the radio channel in the so-called Overlapping Basic Service Set environment. By allowing a new mechanism that is part of the 802.11e, called EDCF-TX...

A novel compact CPW-fed printed dipole antenna is proposed for dual-band Ultra wide band (UHF) RFID and wireless local area network (WLAN) operations. This antenna consist of two dipole elements and it covers 2.53 GHz Ultra High Frequency (UHF) RFID and 5.2 GHZ WLAN IEEE 802.11 Standards. The return loss, radiation pattern, field pattern, linear and circular polarization components are simulate...

IEEE 802.11 wireless Local Area Network (WLAN) have become more and more popular due to easy to deployment and lower cost. It can only provide a best effort service and do not have quality of service (QoS) support for real time (RT) traffic. The IEEE Task Group has been proposed a new standard IEEE 802.11e[1] to address this MAC-layer QoS issue of WLAN. In this paper we proposed a new service d...

In this paper, the packet error rate (PER) of IEEE 802.15.4 low rate wireless personal area network (WPAN) under the interference of IEEE 802.11b wireless local area network (WLAN) is analyzed. The PER is obtained from the bit error rate (BER) and the collision time. The BER is obtained from signal to noise and interference ratio. The power spectral density of the IEEE 802.11b is considered in ...