Wi Max1
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WIMAX is a wireless technology standard that provides broadband access over long distances. It uses the IEEE 802.16 standard and operates in both licensed and unlicensed spectrum. WIMAX can provide high-speed connectivity for applications such as last mile internet access, cellular backhaul, and mobile broadband services. It has advantages over WiFi in terms of range and throughput, but faces competition from existing cellular technologies.
![SILICON IMPLEMENTATION Requirement of low cost chipsets . Intel is a leader in promoting WIMAX and developed its own chipsets. Some of the other semiconductor companies which work on WIMAX are-[Alter, Beceen, GCI, Runcom, picochip (chipsets for base station)]. Comparison with wi-fi WIMAX is a long range system that uses licensed or unlicensed spectrum. Wi-fi is a short range system that uses unlicensed spectrum .](https://image.slidesharecdn.com/wimax1-090907045811-phpapp02/85/Wi-Max1-8-320.jpg)
Wi Max1
- 1. WIMAX PRESENTED BY ____________________________ __________________________________________ ____________________________________________
- 2. INTRODUCTION WIMAX-The worldwide Interoperability for microwave access. It is based on the IEEE 802.16 standard , which is also called wireless MAN. The name WIMAX was created by the WIMAX-forum, which was formed in June 2001 to promote conformance and interoperability of the standard.
- 3. DEFINATION:- 802.16 it is not the actual standard .The is correctly called 802.16.2004 802.16e It is amendment to 802.16-2004.It is properly referred to as 802-16e-2005 FIXED WIMAX Systems built using 802.16-2004 as air interface technology. Mobile WIMAX System built using 802-16-2005 as air technology.
- 4. USES: Connecting wi-fi hot spots with each other and to other parts of the internet. Providing a wireless alternative to cable and DSL for last mile (last km) broadband access. Providing high speed data and telecommunication series. Providing normadic connectivity.
- 5. BRAOD BAND ACCESS:- Many companies are closely examining WIMAX for “last mile” connectivity at high data rates. It could result in lower pricing for both home and business customers as competition lower prices. SUBSCRIBERS UNITS :- Indoor version. Outdoor version. MOBILE APPLICATION :- Cellular companies are evaluating WIMAX as a means of increasing band width for a variety of data intensive applications. WIMAX can enhance wireless infrastructure in an inexpensive way.
- 6. TECHNICAL INFORMATION WIMAX is very different from WI-FI in the way it works. MAC (media access controller)-It provides addressing and channel access control mechanisms. PHYSICAL LAYER 80.2.16-2004 was updated to 802-16-2005 and uses scalable orthogonal frequency division multiple access (SOFDMA) as opposed to the OFDM version (256 sub carriers). It also uses multiple antenna support through MIMO (multiple input multiple output communications).
- 7. SPECTRUM ALLOCATION ISSUES The 802.16 specification applies across a wide swath of the RF spectrum. There is no uniform global licensed spectrum for WIMAX. US will 2.5 GHz and Asian countries like India ,Vietnam and Indonesia will use 3.3 GHz. Manufactures are compelled to provide multi-spectrum devices. WIMAX has advantage of spectral efficiency. (WIMAX—spectral efficiency is 3.7 bits/s/Hz). (WI-FI—spectral efficiency is less than 1 bit/s/Hz).
- 8. SILICON IMPLEMENTATION Requirement of low cost chipsets . Intel is a leader in promoting WIMAX and developed its own chipsets. Some of the other semiconductor companies which work on WIMAX are-[Alter, Beceen, GCI, Runcom, picochip (chipsets for base station)]. Comparison with wi-fi WIMAX is a long range system that uses licensed or unlicensed spectrum. Wi-fi is a short range system that uses unlicensed spectrum .
- 9. LIMITATION A commonly held misconception is that WIMAX will deliver 70 bits/sec over 30 miles. WIMAX devices typically have an antenna which is of lower gain by nature due to their inherent omni directional design. COMPETING TECHNOLOGIES WIMAX main competition comes from existing deployed wireless system such as UMTS CDMA 2000 HIPERMAN WIBRO(S.KOREAN)
- 10. REFERENCES www.wikipedia.org www.wimaxforum.org
- 11. THANK YOU