For the remainder of the problem assume that the transmitted signal passes
through a (multi-path) channel with impulse response
before the Gaussian noise is added.
Also, assume that two consecutive bits are transmitted. In other words one of
the two signals above is transmitted during the interval and one of
the two signals above is transmitted during the interval . Nothing is
transmitted before or after these two bits.
Accurately sketch and label all four possible signals that can be observed at
the out of the channel (before noise is added).