O'Reilly logo

First Mile Access Networks and Enabling Technologies by Tony Antony, Ashwin Gumaste

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Code-Division Multiple Access

The third and most important type of multiplexing technique is CDMA. CDMA, or spread spectrum technology, uses the entire bandwidth for every user such that a particular user is selected based on a code specific to that user. In CDMA systems, on many occasions the bandwidth made available to the user is several times the bandwidth needed for actual communication. CDMA is a difficult concept to visualize, but it has tremendous benefits compared to FDM and TDM, among which are the following:

  • By using CDMA, the power requirement by wireless antennas is much lesser as compared to the other counterparts. Typical CDMA antenna can consume up to 6 to 7 milliwatts (mw) of power for transmission, which is significantly less ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required