Wireless industry continues to change at very high speeds, tending to use the equipment more easily and safely and with a connection speed that tends to be higher and higher. Users of 3G wireless networks are looking forward to the launch of the new 4G standard. WiMax and LTE technologies are the main competitors in the mobile communication domain. This paper is a comparative study based on the...

2. Introduction WiMAX is an IP based, wireless broadband access technology that provides performance similar to 802.11/Wi-Fi networks with the coverage and QOS (quality of service) of cellular networks. WiMAX is also an acronym meaning "Worldwide Interoperability for Microwave Access (WiMAX). WiMAX is a wireless digital communications system, also known as IEEE 802.16, that is intended for wire...

WiMAX is a high speed, wireless broadband access technology for large coverage area. It provides IP based connectivity to the stationary, mobile as well as nomadic users. Voice over Internet Protocol (VoIP) through WiMAX is the most prominent telecommunication service. In this paper, simulative investigations have been done for VoIP in WiMAX network considering scheduling services [1]. Investig...

WiMAX (Worldwide Interoperability for Microwave Access) embodies the IEEE 802.16 family of standards that provisionwireless broadband access.With the IEEE 802.16e−2005 mobility amendment, WiMAX promises to address the ever-increasing demand for mobile high speed wireless data in fourth-generation (4G) networks. WiMAX market studies continue to project increased subscriber growth rates and plann...

Mobile TV, Voice over Internet Protocol (VoIP), and Internet access services are important for mobile users and network service providers. Mobile WiMAX devices can support all three services also known as triple play. In this paper we analyze user capacity of Mobile WiMAX systems for each of these three services. We consider various link characteristics, interference scenarios, modulations, QoS...

The modern wireless systems are required to have high voice quality and data rate. Since our concern is most with scattering environment, antenna diversity is a practically effective and widely applied technique to reduce the effect of multipath fading. In this regard, Multiple Input Multiple Output (MIMO) techniques are an essential part of the IEEE 802.16e-2005 specifications, which form the ...

Mobile Wimax is a new technology which has all the feature in order to be used increasingly in the near future due to its high speed capabilities. Security for Mobile Wimax is an area that needs to be focused upon so as to protect its functionality. Mobile WiMAX systems are based on the IEEE 802.16e-2005 standards which involve a physical (PHY) layer and the medium access control (MAC) layer fo...

Mobile WiMAX has emerged as a starting point of broadband mobile wireless era. Besides plenty of advantages over the prior systems, it also utilizes multiple-antenna techniques to improve the transmission quality. Although this approach has been intensively studied, there are just few published works taking into account channel estimation to obtain realistic performance. This paper studies a jo...

To provide wireless Internet access, WiFi networks have been deployed in many regions such as buildings and campuses. However, WiFi networks are still insufficient to support ubiquitous wireless service due to their narrow coverage. One possibility to resolve this deficiency is to integrate WiFi networks with the wide-range WiMAX networks. Under such an integrated WiMAX and WiFi network, how to...