Wimax vs Wifi

Topics: WiMAX, IEEE 802.11, Wi-Fi Pages: 9 (3517 words) Published: December 24, 2010
WiMAX or Wi-Fi: The Best Suited Candidate Technology for Building Wireless Access Infrastructure

order to highlight that which technology will be better to build a wireless access infrastructure. The first part of the paper examines the both of these wireless technology in order to understand both technologies and their underlying concepts. Then, I have discussed some key characteristics to compare the both of these technologies. The last part concludes and presents a conclusion of which will be the best technology to build a wireless access infrastructure. II. OVERVIEW OF THE CANDIDATE TECHNOLOGIES. 2.1 Wi-Fi The dream to network PCs and other devices without the cost and complexity of cable infrastructures has driven the rapid growth in the wireless market over the last few years.Wi-Fi is one of the wireless technology which appeared early in the wireless market. Wi-Fi is based on the IEEE 802.11 wireless local area network (WLAN) specification. Actually it was designed to be used indoors at close range for example home user and office environment. The main goal of Wi-Fi technology is to provide service for mobile computing device like laptop. But recently it is used for more services for example consumer device such as televisions, digital cameras, and DVD players. A user with a mobile computing device such as a laptop, cell phone, or PDA which is Wi-Fi enabled can connect to the global Internet when it is within in range of an access point. The region which is covered by one or more access points is called a hotspot. Hotspots can range from a single room to thousand of square feet’s of overlapping hotspots. Wi-Fi can also be used to create a mesh network. Wi-Fi also allows connectivity in peer-to-peer (wireless ad-hoc network) mode, which enables devices to connect directly with each other [1]. This connectivity mode is useful in consumer electronics and gaming applications [1]. Wi-Fi products can use different radio frequencies [2]: • The 802.11a standard uses 5 GHz in an AP-to-AP interlink.

Abstract: This paper presents a description of the existing wireless technology Wi-Fi and WiMAX, and try to compare Wi-Fi (IEEE 802.11) and WiMAX (IEEE 802.16), with respect to which technology provides a better solution to build a wireless access infrastructure. Each technology is evaluated based on some key characteristics. This paper concludes with a statement of, which technology will be the best and most cost effective solution to end user.

I. INTRODUCTION With the help of many expert communication engineers IEEE has developed various wireless standards in a hierarchical fashion. Some of the deployed wireless standards are: 802.15 (Bluetooth), 802.11 (Wi-Fi), and 802.16 (WiMAX) promoted by WiMAX forum. Recently a new standard, 802.20 for WANs has been proposed, which is currently under development. Each of these IEEE standards has been deployed to fulfill certain criteria and they complement each other. IEEE 802.11 also known as Wi-Fi standards has had a lot of commercial success, for this reason now the focus of wireless networking shifting to the wide area market. Wi-Fi has been optimized to address the requirements for home or office connectivity but the wide area market is still open to grabs. So to grab the market the low cost wireless which appears is WiMAX, short for Worldwide Interoperability for Microwave Access, is positioned as solution for outdoor and long-range last-mile solutions. Many service providers had adopted this technology as a quick and cheap option to provide connectivity between access points or base stations and their backbone network. The main goal of WiMAX is to provide cheap and fast connectivity of both voice and data communication to remote and difficult terrain locations. With the increasing market demand for WiMAX, it is now regularly compared with Wi-Fi. While both technologies have some identical technical characteristics, however they are approaching the wireless space from...
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