World wide Interpretability for Microwave Access is a telecommunications technology which is based on the international standards of institute of Electrical and Electronics Engineers. This wireless technology is often associated with its previous names and standards like 802.16 2004, it refers to the fixed WiMax which is not suitable for wireless applications. Another definition of WiMax describes this standard as 802.16e2005, which is an extension to 802.10 2004 and it known as mobile WiMax.
This wireless broadband connection can provide many triple play services like IPTV. This technology is based on 802.16 standards set by IEEE, whose name was suggested by WiMax forum in 2001. WiMax forum also run promotion campaigns to promote this technology, So that the people choose it for their ultimate wireless connection choice.
IEEE 802.16 Standards
IEEE is an array of wireless standards which guides and monitors the working of these connections the most recent version of this standard is IEEE 802.16 2009. This standard was written and designed by a working committee established by IEEE council in 1999. This team worked to set global deployment rules for the working of wireless broadband connections such as WiMax. Initially this standard was known as wireless MAN. However later it was termed as WiMax for commercial use. The aim and mission of IEEE was to promote WiMax as a compatible and standard wireless connection. The wireless standard which gained the most popularity overtime is known as 802.16e 2005 due its mobile applications. There are plenty of 802.16 standards which are either archaic or are still in use.
List of 802.16 Standards
There is much development and improvement in the 802.16 stand over the years. The first 802.16 standard was 802.16 2001. This was a fixed wireless broadband connection which operated at a speed of 10 to about 63Ghz. 802.16.2 2001 which was merely an extension to its legacy. 802.16c 2002 was used for system profiles. 802.16a 2003 was used for the physical layer and MAC applications. This standard used the frequency of 2 GHz to 11 GHz. Some other standards which were withdrawn and merged overtime were P802.16b, P802.16b, and P802.162a, 802.16 2004 and 802.16e 2005. Some superseded standards include 802.16f 2005 which is used a management information base, 802.16 2004/cor 12005(connection used for attached connections), 802.16e 2005 a wireless broadband access. Some other standards include 802.16K2007, 802.16 g2007, 802.16 2009 an air interface for mobile and fixed wireless access, 802.16j2009,P802.16h an improvement for license exempt operability and p802.16m which is currently in progress.
The Practical Operations of 802.16 Standards
The 802.16 2005 standards are widely popular to deliver range of services to end users. This standard has provided support for mobile wireless communications. It is also helpful in scaling FFT to the operating channel bandwidth in order to keep carrier constant. The constant carrier results in a consistent and fast broadband speed. It also helps in wide spectral efficiency and substantial cost reduction in narrow channels. It operates in both spectrums as OFDM and SOFDM, to provide multimedia services. It is capable of offering advanced antenna assortment and HRAQ or hybrid automatic repeat request. Adaptive antenna systems and multi input and multi output technology. It provided an introduction to low density parity check. Last but not least it also enabled the operators to use downlink sub channelization. It is popular in under developing areas for its very small infrastructure cost. Fixed WiMax is considered as a solid backhaul for providing wireless connectivity to users at far off places and locations. The license for WiMax operability is provided by WiMax forum. So far the certification is an expensive procedure but it is expected to decreases.