IEEE802.16 is the standard defining the Worldwide Interoperability for Microwave Access (WiMAX) for Metropolitan Area Network (MAN). WiMAX has recently being considered by Internet Service Providers (ISPs) as an attractive alternative to leasing lines from current ISPs or the deployment of new fiber networks. This is mainly the case since WiMAX is more flexible and much cheaper than other possi...

Wimax is one of the fast growing technologies in the world as compare to other wireless networks. IEEE has defined standard IEEE 802.16 for Wimax. Wimax growing rapidly due to the services it’s provides and long range accessibility, but still Wimax facing a lot of security issues and threats like jamming , DDOS , Rogue Base station attack ,Reply Attack and so on.Wimax furnish different security...

The radio access technologies also presents the Coexistence issues between UWB and WiMAX systems at 3.5GHz frequency band which has been recently attained more attention. For investigating the potential interference of ultra-wideband (UWB) on a WiMAX system, an analysis method based on the physical layer modeling is presented. Multi-band orthogonal frequency division multiplex (MB-OFDM) UWB and...

The emergence of WiMAX has attracted significant interests from all the fields of wireless communications including students, researchers, systems engineers and operators. WiMAX has been tipped to bring a revolution in the way we use broadband services today. The WiMAX can also be considered to be the main technology in the implementation of other networks like wireless sensor networks. Develop...

Security has become a primary concern in order to provide protected communication in Wireless environment. We know the basic concept of communication is sent the information from source node to destination node but in my view the communication is not sent the information but the amount of secure information which is sent from source node to destination node. The much anticipated technology for ...

In today's era of communication where wireless media is replacing wired media, security is of utmost concern. The WiMAX technology was developed after the analysis of security failures in IEEE 802.11 technology. As WiMAX has a very high coverage area, security becomes one of the most important issues. Both mobile and fixed WiMAX has many striking features like connection-oriented MAC layer, pre...

at the beginning, which allows multipath to settle before the main data arrives at the receiver. WiMAX supports channel bandwidths of 5 MHz, 7 MHz, 8.75 MHz, and 10 MHz and can optionally support channel bandwidths ranging from 1.25 MHz to 20 MHz. WiMAX supports adaptive modulation and coding in both downlink and uplink with variable packet size. The channel bandwidth scalability, variable leng...

WiMAX is an emerging technology and has many issues that are yet to be addressed. This paper aims at the burst mapping analysis and improvement of the resource allocation scheme for WiMAX. The main aim is to do Performance Improvement of WiMAX downlink OFDMA using Various Burst Mapping algorithms.

The WiMAX, also known as IEEE 802.16, provides a mechanism for deploying high-speed wireless mesh network, (an ubiquitous wireless network) in metropolitan areas. WiMAX technology can be used as “last mile ubiquitous” broadband connections to deliver streaming audio or video to clients. Thus, Quality of Service (QoS) is very important for WiMAX networks. Providing QoS in multi-hop WiMAX network...

With the advance in wireless networking, IEEE 802.16 WiMAX technology has been widely deployed for several applications such as “last mile” broadband service, cellular backhaul, and high-speed enterprise connectivity. As a result, military employed WiMAX as a high-speed wireless connection for data-link because of its point to multi-point and non-line-of-sight (NLOS) capability for many years. ...