Mobile wimax

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  • WiMAX (Worldwide Interoperability for Microwave Access) is a wireless broadband access network named by industry group called the WiMAX forum formed in June 2001. It is Wireless MAN with IEEE 802.16 family standards. Loosely, WiMAX is a standardized wireless version of Ethernet that enables the last mile, intended primarily as an alternative to wire technologies (such as Cable Modems, DSL and T1/E1 links ) to provide broadband access to customer premises.

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  • Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Minimum decoding trellis length and truncation depth of wrap-around Viterbi algorithm for TBCC in mobile WiMAX

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Novel Approaches to Enhance Mobile WiMAX Security

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article CDIT-Based Constrained Resource Allocation for Mobile WiMAX Systems

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Implementation of a Smart Antenna Base Station for Mobile WiMAX Based on OFDMA

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  • Công nghệ không dây là công nghệ truyền thông tin trong điện thoại, máy tính, ... bằng sóng radio. Dễ thấy nhất là ở bluetooth trong diện thoại, máy tính; Wifi, Wimax, ...tài liệu này sẽ cho bạn hiểu vấn đề đó

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  • Mobile and Wireless Communications have been one of the major revolutions of the late twentieth century. We are witnessing a very fast growth in these technologies where mobile and wireless communications have become so ubiquitous in our society and indispensable for our daily lives. The relentless demand for higher data rates with better quality of services to comply with state-of-the art applications has revolutionized the wireless communication field and led to the emergence of new technologies such as Bluetooth, WiFi, Wimax, Ultra wideband, OFDMA.

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  • Introduction to Broadband Wireless roadband wireless sits at the confluence of two of the most remarkable growth stories of the telecommunications industry in recent years. Both wireless and broadband have on their own enjoyed rapid mass-market adoption. Wireless mobile services grew from 11 million subscribers worldwide in 1990 to more than 2 billion in 2005 [1]. During the same period, the Internet grew from being a curious academic tool to having about a billion users.

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  • Currently, Mobile operators are busy with deployment of 4G technology namely, LTE-advanced or WIMAX 802.16m. This 4G technology will be concluded within two years. 5G technology is not standardizing yet, probably 5G standard will define in two to three years, and its deployment will start around 2020. In future, people will expect same quality of internet connectivity as the device is capable. This technology will include all types of advanced features, which make 5G technology more powerful.

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  • Mobility is the key to the success of wireless networks. Roaming has extended the definition of mobility beyond the technology, network, and country boundaries. Is not it fascinating to make or receive calls anywhere in the world using the same phone and identity? International roaming is already proven to be one of the most popular features of today’s wireless network. With the advent and widespread deployment of GSM technology, the mobile users have flexibility to use services in more than 500 networks. Inter-standard roaming has also made significant progress in recent years.

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  • Contents: WiMAX standards development, 3GPP standards development, OFDMA PHY basics, OFDMA frame structure, Protocol Stack architecture, Data pipes, WiMAX MAC PDU format, WiMAX Band width Management, WiMAX Scheduling Services.

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  • Following chapter introduces the mobile communication, gives a short history of wireless communication evolution, and highlights some application scenarios predestined for the use of mobile devices. Cellular and wireless based systems related to different generations of mobile communication, including GSM, IS-95, PHS, AMPS, D-AMPS, cdma2000 and WCDMA are also described by this Chapter. Much attention in this chapter is given to express the wireless based networks, such as Wi-Fi and WiBro/WiMax, and wireless broadcasting systems, including DMB, DVB-H, and ISDB-T.

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  • Cellular Systems (UMTS / LTE) (2/2): UMTS High Speed Downlink Packet Access (HSDPA), UMTS High Speed Uplink Packet Access (HSUPA), Long Term Evolution. Other systems: IEEE 802.16 WiMAX, DECT, TETRA, Satellite Systems. 

     

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