ADInstruments S7200 Operation Manual page 170

AD INSTRUMENTS S7200 TV Signal Analyzer Operation Manual
Figure 6-44 Pre-echo Scenario and the Associated Channel Impulse Response
Pre-echoes and post echoes
A pre-echo and post-echo scenario occurs when both a pre-echo and a post-echo
exist in the transmission channel. The transmission scenario and channel impulse
response are shown in Figure 6-45. The shrongest path is re-transmitted from the
repeater. The LOS signal arrives first but it has a lower power level and the paths
that arrive later may be from reflections.
Figure 6-45 Pre-echo and Post-echo Scenario and the Associated Channel Impulse
Response.
158