It would be easier if you could give an example of want is your input and what is your expected output.
Below is an example which shows you how to convert a complex number to binary.
clear; clc; close all;
% a complex number
x=0.3435637634857634+1i*0.66735646778675;
% parameters for fixed point conversion
wordLength=15;
sign=0; % unsigned numbers
fractionalPart=14;
% covertion to fixed point
X=fi(x,sign,wordLength, fractionalPart);
% how to access values
Xre=real(X);
disp('binary word: '); disp(Xre.bin); fprintf('\n');
disp('real world value, as a string: '); disp(Xre.Value); fprintf('\n');
disp('fixed point value: '); disp(Xre.data); fprintf('\n');
% comparison with floating arithmetic values
disp('----------------');
disp('rounding error: ')
disp( X.data-x )
Here are a few links which should remove any further doubts.
