Abstract
The increasing demands for high-speed mobile Internet access over the past few years have motivated the development of broadband wireless access technologies. Mobile WiMAX (based on IEEE 802.16e-2005 standard) provides a solution to meet the demands. This paper will present a high-level overview of the development of Mobile WiMAX and the key technologies involved in Mobile WiMAX. This paper will also address the future development issues for Mobile WiMAX.
Keywords
IEEE802.16e-2005, Mobile WiMAX, OFDMA, MIMO, PHY, IEEE802.16m
Introduction
In the past few years, the demands for high-speed mobile Internet access have been growing significantly. The increasing demands for mobile Internet access have stimulated operators and vendors in telecommunications sectors to explore and create new technologies to offer such kind of services at a low-cost and highly-efficient basis. Mobile WiMAX (Worldwide Interoperability for Microwave Access), referred to as the IEEE802.16e-2005 standard, is a fast growing broadband access technology that offers higher data rates than existing 3G technologies to enable low-cost multimedia services and Internet applications on mobile devices [1].
Two key technological breakthroughs in wireless communications are integrated into the Mobile WiMAX standards, namely Orthogonal Frequency Division Multiple Access (OFDMA) and Multiple-Input Multiple-Output (MIMO) antenna technology [1-2]. OFDMA is the chosen technology for the Physical (PHY) layer of Mobile WiMAX. MIMO technology improves cell coverage areas for mobile WiMAX systems. OFDMA and MIMO have enabled Mobile WiMAX to provide reliable solution to address increasing demands on mobile Internet access.
This paper presents a high-level overview of Mobile WiMAX (IEEE802.16e-2005) in terms of its standardization roadmap and the key technologies involved. Besides, this paper will give a brief discussion on the system
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