Tuesday, May 27, 2008

Basic data on IEEE 802.16 Standards

Attributes

802.16

802.16d-2004

802.16e-2005

Status

Completed

December 2001

Completed

June 2004

Completed December 2005

Frequency band

10GHz–66GHz

2GHz–11GHz

2GHz–11GHz for fixed; 2GHz–6GHz for mobile

applications

Application

Fixed LOS

Fixed NLOS

Fixed and mobile NLOS

MAC architecture

Point-to-multipoint,

mesh

Point-to-multipoint,

mesh

Point-to-multipoint,

mesh

Transmission

scheme

Single carrier only

Single carrier,

256 OFDM or 2048 OFDM

Single carrier, 256 OFDM or scalable OFDM with 128, 512, 1024, or 2048

subcarriers

Modulation

QPSK, 16 QAM,

64 QAM

QPSK, 16 QAM,

64 QAM

QPSK, 16 QAM,

64 QAM

Gross data rate

32 Mbps – 134.4 Mbps

1 Mbps–75 Mbps

1 Mbps–75 Mbps

Multiplexing

Burst TDM/TDMA

Burst TDM/TDMA/

OFDMA

Burst TDM/TDMA/ OFDMA

Duplexing

TDD and FDD

TDD and FDD

TDD and FDD

Channel bandwidth

20MHz, 25MHz,

28MHz

1.75MHz, 3.5MHz,

7MHz, 14MHz,

1.25MHz, 5MHz,

10MHz, 15MHz,

8.75MHz

1.75MHz, 3.5MHz, 7MHz,14MHz, 1.25MHz, 5MHz,

10MHz,15MHz, 8.75MHz

WiMAX

implementation

None

256 - OFDM as Fixed WiMAX

Scalable OFDMA as Mobile WiMAX

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