The IEEE 802.16e standard, often referred to as mobile WiMAX, specifies air interfaces for broadband wireless access (BWA) systems. The standard is expected to energize the BWA industry and open many opportunities to deploy systems in applications that were previously cost-prohibitive. Mobile WiMAX uses roaming and handoff to enable laptop and mobile phones to operate. High throughput is partic...

Wireless networks are very popular nowadays. Wireless Local Area Network (WLAN) that uses the IEEE 802.11 standard and WiMAX (Worldwide Interoperability for Microwave Access) that uses the IEEE 802.16 standard are networks that we want to explore. WiMAX has been developed over 10 years, but it is still unknown to most people. However compared to WLAN, it has many advantages in transmission spee...

For a broadband wireless standard such as WiMax, security is important and must be addressed. This is to ensure wide acceptance both from the perspective of the end users and the service providers. In order to compete with existing broadband cable or DSL services, the WiMax network must offer comparable security. We discuss the WiMax security mechanisms for authentication, encryption, and avail...

رآکتور مینیاتوری چشمه نوترونی یک تحقیقاتی از نوع مخزن-استخری است که در آن اورانیم با غنای بالا به‌عنوان سوخت، آب سبک خنک‌کننده و برلیوم بازتابنده استفاده ‌شده است. هنگام بهره­برداری دمای سیال افزایش می­یابد باعث ایجاد فیدبک منفی می‌شود. بر اثر تزریق راکتیویته عین حال یکی مزایای این خصلت ایمنی ذاتی است، اضافی دسترس کاهش‌یافته زمان عملکرد کاهش می‌یابد؛ بنابراین محدودیت­های اصلی MNSR کوتاه (حدود 5...

The emergence of WIMAX has attracted significant interests from all fields of wireless communications including students, researchers, system engineers and operators. The WIMAX can also be considered to be the main technology in the implementation of other networks like wireless sensor networks. Developing an understanding of the WIMAX system can be achieved by looking at the model of the WIMAX...

WiMAX and WiFi are considered as the promising broadband access solutions for wireless MANs and LANs, respectively. In the recent works WiMAX is considered suitable as a backhaul service to connect multiple dispersed WiFi „hotspots‟. Hence a new integrated WiMAX/WiFi architecture has been proposed in the literatures. In this paper the performances of integrated WiMAX/WiFi network have been inve...

The emergence of WiMAX has attracted significant interest from all the fields of wireless communication including students, researchers, system engineers and operators. Developing an understanding of the WiMAX system can be best achieved by looking at a model of the WiMAX system. Standards from IEEE and ETSL have been used to develop this model. The model presented in this paper built with gene...