Abstract
This work aims at performing a more detailed coverage and performance analysis of wireless metropolitan area networks based on the IEEE 802.16 standard, which is the basis of WiMAX technology. This paper provides a more formal approach to estimate coverage and performance of WiMAX technology, which enables simplified link budget evaluation. Initially, the major functionalities within the standard that support operation in NLOS scenarios are described. Several operation scenarios are then specified, based on the combination of key system parameters (e.g., transmission power, operation frequency, channel bandwidth) and coverage prediction models. In order to support coverage estimation for operation frequencies up to 6 GHz, appropriate coverage prediction models are adopted for frequencies above 2 GHz. Based on the proposed approach, coverage and performance are estimated under some real world scenario conditions, considering Brazilian regulatory rules for licensed and license-exempt bands.
Highlights
R ECENTLY, some novel wireless technologies have been developed by the IEEE 802 Working Groups, in collaboration with the industry, with focus on interoperability, flexibility, low cost, all-IP support and high transmission data rate
The IEEE 802 Working Group has been specifying the IEEE 802.16 standard [2], which describes the basis of WiMAX technology
It consists of a fixed wireless metropolitan area technology that supports coverage radius of kilometers and data transmission rate up to 74 Mbps
Summary
R ECENTLY, some novel wireless technologies have been developed by the IEEE 802 Working Groups, in collaboration with the industry, with focus on interoperability, flexibility, low cost, all-IP support and high transmission data rate. The IEEE 802 Working Group has been specifying the IEEE 802.16 standard [2], which describes the basis of WiMAX technology It consists of a fixed wireless metropolitan area technology that supports coverage radius of kilometers and data transmission rate up to 74 Mbps. In 2004, the 802.16-2004 version was published, which corresponds to a consolidated specification for LOS and NLOS operation in frequencies up to 66 GHz (including frequencies below 11 GHz) This version has been adopted as the major standard for the development of the first generation of WiMAX chipsets and equipments. The version 802.16e is under development and will incorporate functionalities to support mobility, allowing the WiMAX technology to be embedded in portable devices (laptops and handhelds)
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