Please Solve the Error...if the run the below code..i got one error ..but logically code correct..the error is Matrix dimensions is not match

suresh tadikonda

2018 5 2

0 个回答

8 次查看（30 天）

0 个投票

function [bit_stream ]=msk_demod( signal_ip,f,Tb)
%msk_demod program for minimum shift keying demodulation
% %   Detailed explanation goes here
clc;clear all;close all;
s1=0;s2=0;s3=0;s4=0; 
d1=0;d2=0;d3=0;d4=0;
bit_odd=0;bit_even=0;
data1=[0 0];
data2=[0 1];
data3=[1 0];
data4=[1 1];
% data=input('Enter the data size 8 bits {Ex:- format [1 1 1 1 0 0 1 0]} ');
% Tb=input('Enter Bit period time from 0 to 1 {Ex:- 0.1}');
% f=input('Enter frequency in Hz from 0 t0 80 {Ex:-7}');
data=[1 0 0 1 1 1 0 0];
Tb=0.1;
f=7;
signal_ip=msk_mod(data,f,Tb,1);
s1=msk_mod(data1,f,Tb,1);
s2=msk_mod(data2,f,Tb,1);
s3=msk_mod(data3,f,Tb,1);
s4=msk_mod(data4,f,Tb,1);
l=length(signal_ip);
n_samp=l/1000;
ind=1;
samp=signal_ip;
for i=1:n_samp
    d1=samp(:,(i-1)*1000+1:(i*l)/4).*s1;
    d2=samp(:,(i-1)*1000+1:(i*l)/4).*s2;
    d3=samp(:,(i-1)*1000+1:(i*l)/4).*s3;
    d4=samp(:,(i-1)*1000+1:(i*l)/4).*s4;
    d11=0;d22=0;d33=0;d44=0;
 for k=1:1000
        if (d1(1,k)>0)
            d11=d11+1;
        end
        if (d2(1,k)>0)
            d22=d22+1;
        end
        if (d3(1,k)>0)
            d33=d33+1;
        end
        if (d4(1,k)>0)
            d44=d44+1;
        end
    end
    if (d11 > d22) && (d11 > d33) &&(d11 > d44)
        bit_odd=0;
        bit_even=0;
    end
     if (d22 > d11) && (d22 > d33) &&(d22 > d44)
        bit_odd=0;
        bit_even=1;
     end
     if (d33 > d22) && (d33 > d11) &&(d33 > d44)
        bit_odd=1;
        bit_even=0;
     end
     if (d44 > d22) && (d44 > d33) &&(d44 > d11)
        bit_odd=1;
        bit_even=1;
     end
     bit_stream(1,ind)=bit_odd;
     bit_stream(1,ind+1)=bit_even;
     ind=ind+2;  
end
bit_stream
end

8 个评论
显示 6更早的评论隐藏 6更早的评论

suresh tadikonda 2018-5-3

编辑：Torsten 2018-5-3

在 MATLAB Online 中打开

k i will send column_to_row code

function [ output_matrix ] =column_to_row( input_matrix )
% Converts a column matrix to row matrix
% Ex: [1 2 3 4; 2 3 4 5; 9 8 7 6]
% will be converted to [1 2 3 4 2 3 4 5 9 8 7 6]
[a,b]=size(input_matrix);
count=-b;
for i=1:a
    count=count+b;
    for j=1:b
        op(count+j)=input_matrix(i,j);
    end
end
output_matrix=op;
end