A data transmission system, trying to use 300-3400Hz voice channel for carrier transmission, waveform channel for the additive Gauss white noise channel.- using linear transmission, the transmission and receiving ends of the two ends of the line to be used to raise the root number of 0.5 cosine filter, in order to solve the problem of sampling points. The following simulation uses the non memory sampling channel model, which is limited by the device, and the average power of the complex baseband sampling point is 1, and the noise power of the complex base band is adjustable.

channel.m
convcoding1_2.m
convcoding1_3.m
CRC.m
CRC_errorate.m
demap2.m
demap3.m
erbitrate.mat
map2.m
map3.m
plot1.m
plot2.m
plot3.m
transmit.m
Viterbi1_2.m
Viterbi1_3.m

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