boy said:Ergosic and quasi-static are different. In the quasi-static case the shannon capacity does not exist. THey have to use the outage capacity instead while in the ergodic channel, the shannon capacity is well define since the shannon capacity is the average concept. Hence, the channel must be varied in some senses. To make thing simple...
Ergodic capacity -> you get a number as a capacity such as 10 bps/Hz
Quasi-static capacity -> you get a cdf/ccdf plot of the capacity and you get only a probability to communicate at a given rate.