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Performance Evaluation of WiMAX/IEEE 802.16 OFDM Physical Layer - page 24 / 107

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Fixed/Nomadic access: The WiMAX forum has adopted IEEE802.16­2004 and ETSI HyperMAN standard for fixed and nomadic access [17]. This Orthogonal Frequency Division Multiplexing and able to provide supports in Line of Sight (LOS) and Non Line of Sight (NLOS) propagation environment. Both outdoor and indoor CPEs are available for fixed access. The main focus of the WiMAX forum profiles are on 3.5 GHz and 5.8 GHz frequency band.

uses

Portable/Mobile Access: The forum has adopted the IEEE 802.16e version of the standard, which has been optimized for mobile radio channels. This uses Scalable

OFDM Access and based network is

provides support for handoffs also capable to provide

and roaming [17]. IEEE 802.16e ixed access. The WiMAX Mobile

WiMAX profiles will cover 5, 7, 8.75, and 10 MHz channel bandwidths

for

licensed worldwide spectrum 3.5 GHz frequency bands available by the end of 2007.

allocations in the

[18].

The

irst

2.3 GHz, certified

2.5 GHz, 3.3 GHz and product is expected to

be

13

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