Received Feb 14, 2017 Revised Jun 1, 2017 Accepted Aug 11, 2017 Design and simulation for reconfigurable Wilkinson Power Divider (WPD) related to WiMAX application is proposed in this paper. This proposed design relates to dual band WiMAX frequencies at 2.5 GHz and 3.5 GHz. The main purpose of this design is to design a switchable feeding network that can cover the WiMAX standards by reconfigur...

Two wireless technologies, WiMAX based on IEEE standards and LTE standardized by 3GPP, are two competing technologies, nevertheless, are very technically similar. This competition started with the advent of their pre-4G versions (802.16e for Mobile WiMAX and 3GPP release 8 for LTE) and continued with the advent of their 4G versions (WiMAX 2.0 based on IEEE 802.16 m and LTE-Advanced standardized...

A novel planar antenna with WiMAX and WLAN bandnotched characteristics is presented for ultra-wideband (UWB) applications. The UWB antenna consists of a staircase-shaped radiating element, a microstrip feedline and a modified ground plane. To realize WiMAX band-notched characteristic, a pair of hook-shaped slots is etched on the radiating element. Two folded stubs extending from the ground plan...

One of the challenges of the communication industry today is wireless data transfer with great speed. If the traditional Wireless Local Area Network (WLAN) is the leader for indoor usage (coverage and mobility on short distance), the mobile WiMAX is planned to be the adequate solution for the outdoor (when the user exist the hotspots coverage area). In this paper we propose a solution, based on...

Wimax is Wireless Interoperability for Microwave Access for Wireless Communication IEEE 802. 16e. In this paper the performance of different modulation techniques (QAM, adaptive and QPSK) by using different mobility patterns for VOD over Wimax with the help of VOD SVC coding. The work is done in terms of throughput, traffic sent and traffic received using OPNET modeler 14. 5. Simulation shows t...

IEEE 802.16 standard supports point-to-multipoint (PMP) and Mesh topologies. This paper proposes a quality of service (QoS) mechanism for IEEE 802.16 in PMP mode and a base station (BS) scheduler for PMP mode. It also describes the QoS over WiMAX networks. The average WiMAX delay, load, and throughput at the BS were analyzed and compared by applying different schedulers at the BS and fixed node...

WiMAX (Worldwide Interoperability for Microwave Access) has been developed with advantages such as high transmission rate and predefined quality of service (QoS) framework, enabling efficient and scalable networks for data, video and voice. WiMAX networks were expected to be the main Broadband Wireless Access (BWA) technology that provided several services such as data, voice, and video service...

With advances in wireless communication technologies, users can have rich contents not only via wired networks but also via wireless networks such as Cellular, WiFi, and WiMAX. On the other hand, however, lack of spectrum resources becomes an important problem for future wireless networks. To overcome this problem, dynamic spectrum access technology receives much attention. In this paper, we pr...

Please cite this article in press as: Y. A. S ekercio (2009), doi:10.1016/j.comnet.2009.05.001 We present a comprehensive survey of proposed Quality of Service (QoS) mechanisms in the Media Access Control (MAC) sublayer of WiMAX based wireless networks. QoS support in WiMAX is a fundamental design requirement, and is considerably more difficult than in wired networks, mainly because of the vari...

This paper explores the issues in coexistence between Broadband Fixed Wireless Access, also know as WiMax or 802.16e, and Ultrawideband (UWB), specifically the multiband OFDM form of UWB as promoted by the WiMedia trade group. A multiband OFDM receiver can operate as a channelized radiometer to detect emissions from WiMax systems, either in the uplink or downlink channel. By using well known de...