Matlab simulation for Communication Systems Simulate the simultaneously data transmission of 2 users through a perfect channel by completing the following steps 1) Create the following series of data an1 , an2 n=1…N (N=30) And an1 , an2 = + 1, -1 2) Create the corresponding waveforms using the raised cosine pulses 3) Draw the waveforms and their periodogram 4) Modulate the waveforms with the necessary carriers (example, f1=3Hz, f2=6Hz) 5) Draw the modulated waveforms and their periodograms 6) Sum the modulated signals and draw the resulted waveform and its periodogram 7) Demodulate the waveforms using the necessary local carriers and low pass filters. (to be drawn through remez) 8) Compare the (double) demodulated and the original waveforms (by cutting properly the initial and the final samples in the output of the filter) 9) Study the reaction (result) of non complete synchronization of the local carriers (errors in frequency and/or phase) This document is translated so it may contain some errors. Please ask if something is not clear There is also another exercise using PAM and completion of a viterbi algorithm which will be translated later……
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