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Performance Evaluation of WiMAX/IEEE 802.16 OFDM Physical Layer - page 18 / 107

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      • 2.1.4

        IEEE 802.16­2004

    • 802.16

      ­2001, 802.16a­2003 and 802.16c­2002 were all together consolidated and a new

standard was created which is known as 802.16­2004. In the beginning, it was published as a revision of the standard under the name 802.16REVd, but the changes were so genuine that the standard was reissued under the name 802.16­2004 at September 2004. In this version, the whole family of the standard is ratified and approved.

10­66 GHz LOS

2­11 GHz NLOS

2­11 GHz NLOS

2­6 GHz NLOS

Up to 134 Mbps (28 MHz channelization) QPSK, 16­QAM (optional in UL), 64­QAM (optional)

Up to 75 Mbps (20 MHz channelization) BPSK, QPSK, 16­QAM, 64­QAM, 256­QAM (optional)

Up to 75 Mbps (20 MHz channelization) 256 subcarriers OFDM, BPSK, QPSK, 16­QAM, 64­QAM, 256­ QAM

Up to 15Mbps (5 MHz channelization) Scalable OFDMA, QPSK, 16­QAM, 64­ QAM, 256­QAM (optional)

Fixed

Fixed

Fixed/Nomadic

Portable/mobile

Completed

Spectrum Popagation/channel conditions Bit Rate

Modulation

Mobility

IEEE 802.16­

IEEE 802.16a

IEEE802.16­

2001

2004

December 2001

January 2003

June 2004

Table 2.1: Comparison of IEEE standard for BWA

IEEE 802.16e­ 2005 December 2005

2.1.5 IEEE 802.16e­2005

This amendment was included in the current applicable version of standard IEEE 802.16­ 2004 in December 2005. This includes the PHY and MAC layer enhancement to enable combined fixed and mobile operation in licensed band.

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