W hen users want broadband Internet service today, they’re generally restricted to a T1, DSL, or cable-modem-based connection. However, these wireline infrastructures can be considerably more expensive and time consuming to deploy than a wireless one. In addition, rural areas and developing countries frequently lack optical fiber or copper-wire infrastructures for broadband services, and provid...

WiMax(World Wide Interoperability for Microwave Access) provides high data rate over long distance wireless communication .Generally Wimax adapted OFDM (Orthogonal code division multiple access) architecture as transmission medium in IEEE 802.16 standard. Our aim is to analysis MC-CDMA (Multicarrier code division multiple access) based WiMax design and verify the performance under different mod...

IEEE 802. 16 standard for Broadband Wireless Access (BWA) and its associated industry consortium, Worldwide Interoperability for Microwave Access (WiMAX) forum promise to offer high data rate over large areas to a large number of users where broadband is unavailable. The emergence of WiMAX has attracted significant interests from all the fields of wireless communications. WiMAX-MIMO systems whi...

Long range wireless for data and voice connectivity is being considered as viable and affordable solution for rural India since few years now. Numerous solutions were presented to bridge the digital divide; WiFiRe is one of them. Here, we discuss about implementation of WiFiRe MAC done so far and its effectiveness. We propose several improvement in design, development and strategy used to imple...

IEEE 802.16e, mobile Wi-Max, is a wireless technology used to provide very high data rate over large areas to a large number of users where broadband is unavailable. WiMAX network operators provide WiMAX subscriber units that enable connection to the metropolitan WiMAX network while WiFi units are used for connecting local devices within homes or businesses. In this paper, we use OPNET Modeler ...

In this paper a heterogeneous network model based on the IMS-SIP (session Initiation protocol) with the help of Authentication, Authorization, and Accounting (AAA) protocol that integrates the Worldwide Interoperability for Microwave Access (WiMAX), Universal Mobile Telecommunications System (UMTS) and Wireless Local Area Network (WLAN) technologies is proposed to improve QoS. The proposed Loos...

By using experimental measurements of smart grid applications compliant with IEC 61850 in trace-driven WiMAX simulations, we show that the WiMAX MAC protocol efficiency decreases as a function of the number of stations. To avoid this shortcoming, we propose and analyze a novel WiMAX MAC protocol for smart grid applications, which uses lattice correlators to improve the throughput-delay performa...

The integrated network provides the diverse application to the user. WiMAX is the most promising high speed broadband access with full QoS and WLAN provides high data rate at low cost, for limited coverage area. Integrated WiMAX-WLAN network can be capable of providing ubiquitous connectivity and high data rate to the end user. This paper focuses on the comparative performance analyzing of inte...

The massive development and investment in the Ghanaian telecommunication sector and the act of deregulation in the industry has necessitated the deployment of Worldwide Inter-operability for Microwave Access (WiMAX) in the 25002690 MHz band to help serve the ever increasing needs of broadband internet subscribers in the country. In order to achieve the goal of providing comprehensive network co...

The IEEE 802.16 technology (WiMAX) is a better alternative to 3G or wireless LAN networks for providing last mile connectivity by radio link due to its high data rates, low cost of deployment and large coverage area and Ease of Use. 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) ne...