Access methods
Code Division Multiple Access (CDMA)
The best known CDMA technology is called Spread Spectrum.
Spread spectrum distributes the power of the transmitted signal
over a bandwidth that is much wider than the minimum
bandwidth of the original transmitted signal.
The power distribution is done using a code, which “marks” the
The spectral power distribution (mW/Hz) of the spread signal is
considerably small, and consequently narrowband interference
and reflection problems such as fading are better in control.