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Wireless Channel error model



Hi,

Question on error model (particularly for wireless channels).

Looking at the ns-lan.tcl, the ErrorModel is installed independantly
for forward link and reverse link.
In other words, when the ErrorModel uses Expo or TwoStateMarkov,
forward link can be in 
burst error state (fading) but the reverse link may not be experiencing
any fading, and transmitting error free.

Is it a correct model for wireless channel.

The links cannot be totally independant because,
* Fadding affects on both links are almost same (even if different
bands were used they are in similar spectrum).  

The links may not be totally dependant because,
* Radio at the hub (base station) may control power differently
  to handle the fading than the customer radio.

I'd like to see response on this (especially from radio engineers).

Karu.