We all know that the WiMAX system has been supporting IEEE 802.16, This standard is called IEEE called 802.16, it was associated with 802.16a / REV d / e standard.
These standards were issued by IEEE standard 802.16 into the subgroup called (802.16a/REV d/e) standard that originally covered the Wireless local loop (WLL) technologies with radio spectrum from 10 to 66 GHz. Recently were extended below 10 GHz.
In the year of January 2003, the approved IEEE standard 802.16a as an amendment to IEEE standard 802.16 defining line of sight capability.
In the year of 2004, the IEEE 802.16 standard Revd was introduced to support basically indoor customer premises equipment through additional radio capabilities like antenna beamforming and OFDM sub channeling.
In the year of 2005, an IEEE standard 802.16e variant was developed for supporting mobility device.
Following are the details of various IEEE 802.16 standard related to WiMAX system listed below.
1. 802.16
- Spectrum - 10-66 GHz
- Configuration - Line of sight
- Mobility - Fixed
- Channel bandwidth - 20,25 MHz
- Typical cell radius - 1-3 miles
- Modulation - QPSK-16 QAM 64 QAM
- Completion - December 2001
- Spectrum - 2-11 GHz
- Configuration - Non-Line of sight
- Mobility - Fixed
- Channel bandwidth - Selectable, 1.25-20 MHz
- Typical cell radius - 3-5 miles
- Modulation - total number of 256 subscribers, OFDM using QPSK, 16 QAM, 64 QAM, 256-QAM
- Completion - January 2003
- Spectrum - <6 GHz
- Configuration - Non-Line of sight
- Mobility - Fixed
- Channel bandwidth - 5 MHz planned
- Typical cell radius - 1-3 miles
- Modulation - total number of 256 subscribers, OFDM using QPSK16, QAM, 64 QAM, 256-QAM
- Completion - 2nd half of 2005