‫Now, this is the floor diagram that can be used to generate the EPA scheme or related symbols using
‫the PSC modulation blog and the first block is the random sports blog.
‫And in this blog, we have set the minimum value as zero and the maximum value is 256.
‫This means that this blog will generate integers between zero and 255 and 1000.
‫Such integers would be generated at a time.
‫And then this would be repeated.
‫And the output of this blog is indeed byte form.
‫It now attached to this random sports blog is the PSC him or relation blog.
‫And the NDP is more bullish relation blog.
‫If I double click on this blog, the number of constellation points is set as four.
‫That means we are generating kupinski modulation with four symbols.
‫And then I have said the Greek wording as chefs.
‫That means that there would be create coding within the adjacent symbols.
‫And the differential encoding is set as No.
‫And the simple super symbolists hectares for.
‫That means the upsampling factor is for each U.P.S. assemble would be repeated four times.
‫And the excess bandwidth are the pulse shaping factor.
‫Small R is zero point three five.
‫And this will translate in to the extra band excess bandwidth tof.
‫Thirty five percent.
‫And then I press.
‫Okay.
‫And then I have the total block.
‫And after the total block I have the frequency sync log.
‫The frequency sync log is used to show the signal in the frequency domain.
‫And it is, it has a central frequency of zero because the signal is in the basement.
‫So I have set the center frequency as zero.
‫And I have said the bandwidth has 32 kilohertz equal to the sampling rate.
‫And then I have the
‫Constellation Sync log and the Constellation Sync Block is who is used to show the Constellation diagram.
‫And then I have the Time Sync blog.
‫I'm saying Block is used to show the eye and the cute data in the time domain.
‫Now when I run this blog.
‫On the top, I have the.
‫I and dequeue data that is shown as a function of time and in the second graph I can see it is the frequency
‫domain representation of the modulated UPMC symbols.
‫And I can see that the D.
‫This these kupinski symbols have a bandwidth of five kilohertz.
‫Now, what would happen if I change the pulse shipping factor and.
‫I increase the access bandwidth from zero point three five two zero point.
‫Nine, five.
‫That means I am using 95 percent extra bandwidth.
‫So.
‫Here I can see that now the bandwidth has increased from five kilohertz school, eight kilohertz.
‫Now the third block, third deterred graph.
‫It is showing the UPMC symbols.
‫And this is this might not be the graph that you would be expecting because you would be expecting for
‫Symbol's for Kupinski SEMBLENCE.
‫And this is not the case.
‫And the reason for that is that if you see this diagram here, we are using to rule cosine filters in
‫order to generate the rays cosine vs cosine pulses at the receiver.
‫And but in this case, I am only using one true trace.
‫Cosine filter.
‫Indeed.
‫ECM Modulation blog.
‫So with one rootlets cosine filter, there is inter symbol interference.
‫But if I use to trace cosine filters, there is no inter symbol interference because no, the signal
‫is indeed raised cosine shape.
‫So that is why that in this case it is in impossible interference.
‫So in order to in order to finish this inter simbel interference, I need to add another router is cosine
‫filter.
‫And how I can do it, I first click here and then here I write route.
‫So here I get the router cosine filter.
‫I double click on it.
‫And then I set the parameters and I set the number of tab says 200.
‫Higher the better.
‫But it also increases the computational complexity and also the excess bandwidth.
‫I set it as in the transmitter as zero point nine five dissembled rate.
‫I leave it as it is.
‫And the simple rate it should be the upsampling factor and the upsampling factor is four.
‫So I put it.
‫As for now, the signal that is being generated by the PSC is more relation blog.
‫It is up so hampered by a factor of four.
‫That means there are four simple spa symbol.
‫So but at the output of this rule, trias cosine filter.
‫I want to reduce this upsampling factor to one.
‫So I need to decimate my signal by removing the extra set sampas and how I can do it.
‫This I can do this by setting the decimation factor as four.
‫So I click apply then.
‫Okay.
‫And now I need to connect this block.
‫So here I click here.
‫And then here.
‫And so this block is now connected.
‫And now when I run this floor diagram.
‫You can very well see here that.
‫In this case, there are four U.P.S. assembles and there is no inter symbol interference.