W i-Fi—consisting of the IEEE 802-11a, 802.11b, and 802.11g technologies—has proven to be a fast wireless-networking approach that is relatively easy and inexpensive to implement. The technology is particularly popular in North America and Asia. About 21 million Wi-Fi (short for wireless fidelity) cards will ship worldwide this year, and 33 million will ship in 2004, said Gemma Paulo, senior an...

Belonging to the same family of standards as Ethernet, it was nicknamed 'Wireless Ethernet' and was considered an appropriate networking technology for offices because it did not rely on cables. Although burdened by inherent insecurity (Fluhrer, 2001) and low bit rates compared to its wired equivalent, IEEE 802.11 was a success. The cost of manufacturing 802.11 chipsets fell quickly and 802.11 ...

The new international standard IEEE802.11p (WAVE) defined enhancements to IEEE802.11 (Wi-Fi). A new mobile e-business platform of Wi-Fi and WAVE is described. Based on cognitive radio, the popular wireless network Wi-Fi can collaborate with WAVE in their common unlicensed spectrum band and licensed spectrum band. As a core technology in the cognitive radio field, OFDM is introduced, and a novel...

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...

A high performance monopole antenna fabricated using a folded wire line and metal patch as radiator is presented. A prototype of the proposed monopole antenna with a compact area size is implemented, and the multi-band WLAN antenna shows a wide operating bandwidth of about 530MHz and 3400MHz for low band and high band, bandwidth, making it easy to cover the IEEE 802.11a, IEEE 802.11b, IEEE 802....

Europe faces a considerable challenge in providing good quality health care in the forthcoming future as the aging population increases. The phenomenon also results in a considerable cost on society due to the dependency on the public health sector particularly because such individuals would not be able to contribute to the economy. On the other hand, younger persons would need to make alternat...

Single hopping is implemented by using software approach over IEEE802.11WLAN card using orthogonality concept and protocol. Most feature of single hopping is to achieve virtual Wi-Fi network. Design parameters of this approach are time delay and energy consumption .There are many scenarios where a wireless device connect to virtual Wi-Fi network. In this paper we improve the energy consumption ...

Several emerging studies have focused on the pricing issue of bandwidth sharing between Wi-Fi and WiMAX networks; however, most either concentrate on the design of collaborated protocols or figure out the issue without the overall consideration of consumer preferences and contract design. In this study, we explore a wireless service market in which there are two wireless service providers opera...

The proposed system exploits Wi-Fi and GeoMagnetic fingerprintings aided by Inertial Measurement Unit (IMU). Basically, the system only consists of the off-the-self Wi-Fi Access Points (APs) and low-cost IMU, while no extra equipment is required. Since the accuracy of Wi-Fi fingerprinting heavily depends on the number of APs deployments, spatial differentiability, and the fluctuation of Receive...