7. 2.4 GHz PHY

  1. James P.K. Gilb Dr.

Published Online: 3 AUG 2011

DOI: 10.1002/9781118098868.ch7

Wireless Multimedia: A Guide to the IEEE 802.15.3™ Standard

Wireless Multimedia: A Guide to the IEEE 802.15.3™ Standard

How to Cite

Gilb, J. P.K. (2011) 2.4 GHz PHY, in Wireless Multimedia: A Guide to the IEEE 802.15.3™ Standard, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781118098868.ch7

Publication History

  1. Published Online: 3 AUG 2011
  2. Published Print: 10 JAN 2011

ISBN Information

Print ISBN: 9780738136684

Online ISBN: 9781118098868

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Keywords:

  • 2.4 GHz physical layer (PHY);
  • delay spread;
  • differential quadrature phase-shift keying (DQPSK);
  • transmitter performance

Summary

The 2.4 GHz PHY has two channel plans depending on the environment in which it is operating. One is the center frequencies and the other is channel ID (CHNL_ID). Throughout the standard, all power measurements are referenced to the antenna connector and do not include the effects of the antenna. One of the key requirements for interoperability is to provide a specification for how the data are formatted. The base modulation rate, which all device (DEV)s are required to support, is the 22-Mb/s differential quadrature phase-shift keying (DQPSK) uncoded modulation. The transmitted signal is band limited to allow up to four channels in the 83.5 MHz allocated for unlicensed operation in the 2.4 GHz band. Delay spread, or multipath, is the result of reflections of the transmitted signal from objects in the environment that reach the receiver.

Controlled Vocabulary Terms

delay circuits; quadrature phase shift keying