MATLAB: I want to export two “100X1 double” matrix into one tab delimited .txt file. file should have two columns with tab delimiter. column one with matrix one and column two with matrix two data.

Question

% Demonstration of QPSK Modulation and Demodulation

clear; %clear all stored variables

N=500; %number of data bits

noiseVariance = 0.1; %Noise variance of AWGN channel

Rb=1e3; %bit rate

amplitude=1; % Amplitude of NRZ data

data=randn(1,N)>=0; %Generate uniformly distributed random data

oddBits = data(1:2:end);

evenBits= data(2:2:end);

[evenTime,evenNrzData,Fs]=NRZ_Encoder(evenBits,Rb,amplitude,'Polar');

[oddTime,oddNrzData]=NRZ_Encoder(oddBits,Rb,amplitude,'Polar');

Fc=2*Rb;

inPhaseOsc = 1/sqrt(2)*cos(2*pi*Fc*evenTime);

quadPhaseOsc = 1/sqrt(2)*sin(2*pi*Fc*oddTime);

qpskModulated = oddNrzData.*quadPhaseOsc + evenNrzData.*inPhaseOsc;

Tb=1/Rb;

inPhaseOsc = inPhaseOsc';

quadPhaseOsc = quadPhaseOsc';

% i want above two matrix in a tab delimed .txt file in two columns saperated by TAB.

Answer 1

Omit the transposing. Then:

data = [inPhaseOsc; quadPhaseOsc];
[fid, msg] = fopen(FileName, 'w');
assert(fid > 0, 'Cannot open file %s: %s', FileName, msg);
fprintf(fid, '%g\t%g\t\n', data);
fclose(fid);