The increasing demand for location-based services inside buildings has made indoor positioning a significant research topic. This study deals with indoor positioning using the Wireless Ethernet IEEE 802.11 (Wi-Fi) standard that has a distinct advantage of low cost over other indoor wireless technologies. Most of the proposed Wi-Fi indoor positioning systems use either proximity detection via ra...

Introduction In examining wireless-internet technologies (Wi-Fi), several ethical issues are exposed. While the unauthorized use of Wi-Fi is illegal in a few select cases, what is considered permissible still varies from state to state. What does not vary, however, is the fact that individuals are going to great lengths to locate unsecured wireless access points whether it is for their own bene...

Radio over Fiber is the future technology. It will take over all traditional fiber technology, as it offers quality and service up to the requirement of the users. The ROF is being implemented over traditional fiber widely as it offers replacing of optical fiber’s high range and also flexible in wireless mode. Along with the ease, optical fiber bandwidth utilization increase by this. Because fi...

This paper describes a long-range directional wake-up radio (LDWuR) for wireless mobile networks. In contrast to most wake-up radios (WuR) to date, which are short range, ours is applicable to long-range deployments. Existing studies achieve long distance by using modulation and coding schemes or by directional antennas, though the latter require exploring the direction of the transmitter. To a...

By definition, IEEE 802.11 wireless LANS (WLANs) are constantly in flux. There is no way to predict where a particular client will be at any moment, making it equally impossible to predetermine the load on any wireless access point (AP). How will 802.11 Wi-Fi networks running in adjoining offices or on different floors affect one another? Even something as seemingly trivial as rearranging cubic...

Wireless communications are increasingly important. Performance is a very relevant issue. Laboratory measurements are made about several performance aspects of Wi-Fi IEEE 802.11a, b, g point-to-point links, using two types of access points from Enterasys Networks. Detailed results are presented and discussed, namely at OSI levels 4 and 7: TCP throughput, jitter, percentage datagram loss, and FT...

In recent years, plenty of interest has been shown in wireless technology. The idea of wireless local area networks (WLAN) started with the 802.11 standards, referred to as Wi-Fi. The importance of Wi-Fi is currently very evident, almost all laptops and PDAs have Wi-Fi as a standard feature. There are a number of standards that constitute 802.11. There are three main flavors of the 802.11 stand...

With the arrival of the era of Internet of Things (IoT), Wi-Fi Direct is becoming an emerging wireless technology that allows one to communicate through a direct connection between the mobile devices anytime, anywhere. In Wi-Fi Direct-based IoT networks, all devices are categorized by group of owner (GO) and client. Since portability is emphasized in Wi-Fi Direct devices, it is essential to con...

Abstract: In recent decades, the proliferation of smart phones, tablets, and wireless networks has fostered a growing interest in indoor passive positioning. The Wi-Fi-based passive positioning systems can provide Location-Based Services (LBSs) to the third party such as market and security departments. Most of the existing systems are based on the Receive Signal Strength Indication (RSSI) info...

With the rising industrial interest in cyber-physical systems (CPSs), there has been growing concern in the application of real-time wireless technologies to CPS applications. We proposed in previous work the RT-WiFi protocol that provides realtime high-speed predictable data delivery and enables designs to meet time-critical industrial needs. However, without explicit reliability enforcement m...