The mobile Worldwide Interoperability for Microwave Access (Mobile WiMAX) air interface adopts orthogonal frequency division multiple access (OFDMA) as multiple access technique for its uplink (UL) and downlink (DL) to improve the multipath performance. All OFDMA based networks including mobile WiMAX experience the problem of high peak-toaverage power ratio (PAPR). The literature is replete wit...

WIMAX is a wireless high speed internet communication technology in geographical areas which is having higher data transfer rate. This is a emerging data transfer mechanism for its superior quality over their former communication technology like cable-modem and DSL connections. Mobile devices scans more channels in order to search neighboring base stations which selects the optimal target. The ...

With the development and advancement of Internet, the demand of Wideband High data rate communication services is increasing. This triggered the demand of WiMAX as it supports high data rate and high capacity in mobile Broadband wireless access (BWA). IEEE 802.16e (mobile WiMAX) is better than IEEE 802.16d (fixed WiMAX) as it gives full mobility at vehicular speeds and better performance. The p...

Wireless networking has become an important area of research in academic and industry. Worldwide Interoperability for Microwave Access (WiMAX) is a technology that bridges the gap between fixed and mobile access and offer the same subscriber experience for fixed and mobile user. Major issues arising in WiMAX network is the selection of the optimal path between any two nodes and route stability....

WIMAX relay station mesh network has been approved by IEEE 802.16j as a standard to provide a highly data rate transmission, the RS was implemented to extend the coverage zone of the BS, for instance the MSs previously were out of the coverage of the BS they become in the coverage of the RS, therefore these MSs can have Admission control from the BS through the RS. This paper describe a problem...

WiMAX wireless communication has been rapidly developed for broadband mobile communication including image transmission. To design excellent high performance mobile communication systems of very high speed transmission, accurate environment evaluation of communication systems is indispensable. In the past, building and street effects on high speed signal propagation have been studied by FDTD me...

The integration of WiMAX and WLAN has been seen as a promising approach toward 4G. we are going to analyze different important issues for the interworking of Mobile WiMAX and WLAN networks. We propose a tightly coupled interworking structure. Our proposed schemes can keep stations always being best connected due to ad-hoc nature that means An ad hoc network is a collection of wireless mobile no...

Worldwide Interoperability for Microwave Access (WiMAX) is a new communication technology that conduits the fissure between fixed and mobile access and offers the same Quality of Service (QoS) to both types of users. Generally, WiMAX is more vulnerable to the inside and outside attacks due to the absence of any clear line of defense. The Mobile Subscriber Stations (MSSs) selected to transfer th...

RF power amplifiers in mobile WiMAX transceivers operate in an inherently nonlinear manner. It is possible to amplify the signal in the linear region, and avoid distortion, using output power back-off; however, this approach may suffer significant reduction in efficiency and power output. This paper investigates the use of Doherty techniques instead of back-off, to simultaneously achieve good e...

Deployment Video on Demand (VoD) over the next generation (WiMAX) has become one of the intense interest subjects in the research these days, and is expected to be the main revenue generators in the near future. In this paper, the performance of Quilty of Service of video streaming (IPTV) over fixed mobile WiMax network is investigated under different terrain environments, namely Free Space, Ou...