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MATLAB code for QAM constellation

  Visit Main Website [Click Here ↗] MATLAB Script %%% Code starts here %%% clc;clear all;close all; M = 4;  % Number of levels after quantization / size of signal constellation k = log2(M);  % Number of bits per symbol rng(1)  %assaining the value of seed integer N =5000;  % Number of bits to process dataIn = randi([0 1],1,N);   % Generating randon bits dataInMatrix = reshape(dataIn,length(dataIn)/k,k); % Reshape data into binary k-tuples, k = log2(M) dataSymbolsIn = bi2de(dataInMatrix);  % Convert binary to decimal for n= 1:N/k     if dataSymbolsIn(n)==0         QAM(n)= complex(1,1);     elseif dataSymbolsIn(n)==1         QAM(n)= complex(-1,1);     elseif dataSymbolsIn(n)==2         QAM(n)= complex(1,-1);     else         QAM(n)= complex(-1,-1);     end    end display(dataIn,'First fifty bits'); display(QAM,'first twenty-five4-QAM symbols'); %Transmission of 4QAM data over AWGN channel snrdB =8; Y=awgn(QAM,snrdB); %received signal %Threshold Detection     for n= 1:N/k

SSC Previous Year Question Papers with Solutions - (4)

  Q. The computer program that converts assembly language to machine language is called ............. 1) Complier 2) Interpreter 3) Assembler 4) Comparator Answer: Option 3 Q. In which communication mode, data can be transmitted in both directions at same time? 1) Simplex 2) Full duplex 3) Half duplex 4) Multiplex Answer: Option 2 Next>> <<Previous Go back