Friday, November 26, 2010

Wireless Data Communication Frequency

» Wireless LANs: IEEE 802.11b operates at 902 – 928 MHz and 2400 – 2483 MHz, and the industrial, scientific, and medical (ISM) radio bands operate at 2.4 GHz in the United States. The IEEE 802.11b operates at 2400 – 2483 MHz in Europe, and at 2400 – 2497 MHz in Japan. IEEE 802.11a and HiperLAN2 use 5150 – 5350 MHz and 5725 – 5825 MHz, and the unlicensed national information infrastructure (U-NII) band operates at 5.8 GHz in the United States. They operate at 5150 – 5350 MHz and 5470 – 5725 MHz in Europe, and at 5150 – 5250 MHz in Japan.

» Bluetooth: A total of 79 1-MHz channels are allocated from the unlicensed 2.402 –2.480 GHz in the United States and Europe for Bluetooth signal transmission. Other countries may have fewer channels but all fall into the 2.4-GHz band.

» WiMax: A wide range from 2 to 11 GHz that includes both licensed and unlicensed bands will be used for 802.116a, and from 11 to 66 GHz can possibly be used by 802.116c.

» Ultra-wideband (UWB): In the United States, the FCC mandates that UWB can operate from 1.1 to 10.6 GHz.

» Radio-frequency identification (RFID): RFID tags operate at the frequency bands of LF (120 – 140 KHz), HF (13.56 MHz), UHF (868 – 956 MHz), and microwave (2.4 GHz).

» IrDA: IrDA uses frequencies around 100 GHz for short-range data communication.

» Wireless sensors: Sensor motes support tunable frequencies in the range of 300 to 1000 MHz and the 2.4-GHz ISM band. In particular, ZigBee, the remote sensor control technology, operates at the 868-MHz band in Europe, 915-MHz band in the United States and Asia, and 2.4-GHz band worldwide.

Source of Information : Elsevier Wireless Networking Complete 2010 
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