By Jeffrey G. Andrews, Arunabha Ghosh, Rias Muhamed
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Additional info for Fundamentals of WiMAX
Is restricted to fixed applications; in some countries, two-way communication is not permitted. Among all the available bands, this one offers the most promise for broadband wireless, particularly within the United States. The FCC allowed two-way transmissions in this band in 1998 and in mid-2004 realigned the channel plan. This band, now called the broadband radio services (BRS) band, was previously called the MMDS band. 690GHz. Regulations allow a variety of services, including fixed, portable, and mobile services.
For example, WiMAX could be embedded into a portable gaming device for use in a fixed and mobile environment for interactive gaming. Other examples would be streaming audio services delivered to MP3 players and video services delivered to portable media players. As traditional telephone companies move into the entertainment area with IP-TV (Internet Protocol television), portable WiMAX could be used as a solution to extend applications and content beyond the home. 4 WiMAX and Other Broadband Wireless Technologies WiMAX is not the only solution for delivering broadband wireless services.
16a, was completed in 2003, with OFDM schemes added as part of the physical layer for supporting deployment in multipath environments. 11 standards. 16a also specified additional MAC-layer options, including support for orthogonal frequency division multiple access (OFDMA). 16a were made and completed in 2004. 16c with a single standard, which has also been adopted as the basis for HIPERMAN (high-performance metropolitan area network) by ETSI (European Telecommunications Standards Institute). 16 group began work on enhancements to the specifications to allow vehicular mobility applications.