# BaseProject.m

## File contents

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % TITLE: FINAL PROJECT FOR ECE 5660, SPRING 2006 % % NAME: <put your name here> % DATE: <put the date you turn this in here> % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Constants rt2 = sqrt(2); % Simulation parameters Ts = 1; % Symbol period (seconds) N = 4; % Samples per symbol period T = Ts/N; % Sample period (seconds) Fc = 0.2; % Discrete-time carrier frequency (cycles/sample) fc = Fc/T; % Continuous-time carrier frequency (Hertz) NumSymbols = 1000; duration = NumSymbols*Ts; % Length of simulation (seconds) A = 1; % Signal amplitude a = 0.35; % Excess bandwidth Lp = 6; % RTRC trucation (symbol periods) n = [-Lp*N:Lp*N]+1e-7; rtrcpulse = sqrt(N)*(sin(pi*(1-a)*n/N) + (4*a*n/N).*cos(pi*(1+a)*n/N))./(pi*n.*(1-(4*a*n/N).^2)); pulse = rtrcpulse; Lpulse = length(pulse); nvar = 0.0; % Noise variance nstd = sqrt(nvar); % Noise standard deviation % Look up table properties M = 16; LUTin = [0:M-1]; LUT0 = [1;1;1;1]*[-3,-1,1,3]*A; LUT0 = reshape(LUT0,1,M); LUT1 = [-3;-1;1;3]*[1,1,1,1]*A; LUT1 = reshape(LUT1,1,M); LUTdecision = [LUT0; LUT1]; % Design PLL parameters BnTs = 0.0005; zeta = 1/sqrt(2); % Buffers p0buff = zeros(Lpulse,1); p1buff = zeros(Lpulse,1); % Start simulation loop Ncnt = 0; for t=1:T:duration if(Ncnt==0) Ncnt = N-1; % Generate new bits and symbols bits = randn(log2(M),1); bits = 0*(bits>0)+(bits<=0); i = 2.^[0:log2(M)-1]*bits + 1; a0 = LUT0(i); a1 = LUT1(i); else a0 = 0; % This is for upsampling a1 = 0; % This is for upsampling % Modify counter Ncnt = Ncnt - 1; end % Fill up transmitter pulse buffer p0buff = [a0;p0buff(1:Lpulse-1)]; p1buff = [a1;p1buff(1:Lpulse-1)]; % Compute transmitter pulse output s0 = pulse*p0buff; s1 = pulse*p1buff; % Compute modulated signal s = rt2*(s0*cos(2*pi*fc*t) - s1*sin(2*pi*fc*t)); % Compute received signal r = s + nstd*randn(1,1); % Additive white Gaussian noise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Put your code here % % Your code should synchronize with the data in the signal r %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% end

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