Another source of error due to filtering effect of the system: -Inter-symbol interference (ISI) -The techniques to reduce ISI -Pulse shaping to have zero ISI at the sampling time -Equalization to combat the filtering effect of the channel | Digital Communications I Modulation and Coding Course B------ ------- -------B Period 3 - 2007 Catharina Logothetis Lecture 7 Last time we talked about Another source of error due to filtering effect of the system Inter-symbol interference ISI The techniques to reduce ISI Pulse shaping to have zero ISI at the sampling time Equalization to combat the filtering effect of the channel Lecture 7 2 Today we are going to talk about Some bandpass modulation schemes used in DCS for transmitting information over channel M-PAM M-PSK M-FSK M-QAM How to detect the transmitted information at the receiver Coherent detection Non-coherent detection Lecture 7
