Communications Toolbox™

rsencof - Encode ASCII file using Reed-Solomon code

Syntax

rsencof(file_in,file_out); rsencof(file_in,file_out,err_cor);

Description

rsencof(file_in,file_out) encodes the ASCII file file_in using (127, 117) Reed-Solomon code. The error-correction capability of this code is 5 for each block of 127 codeword characters. This function writes the encoded text to the file file_out. Both file_in and file_out are string variables.

rsencof(file_in,file_out,err_cor) is the same as the first syntax, except that err_cor specifies the error-correction capability for each block of 127 codeword characters. The message length is 127 - 2 * err_cor.

Note   If the number of characters in file_in is not an integer multiple of 127 - 2 * err_cor, the function appends char(4) symbols to file_out.

Examples

The file matlabroot/toolbox/comm/comm/oct2dec.m contains text help for the oct2dec function in this toolbox. The commands below encode the file using rsencof and then decode it using rsdecof.

file_in = [matlabroot '/toolbox/comm/comm/oct2dec.m'];
file_out = 'encodedfile'; % Or use another filename
rsencof(file_in,file_out) % Encode the file.

file_in = file_out;
file_out = 'decodedfile'; % Or use another filename
rsdecof(file_in,file_out) % Decode the file.

To see the original file and the decoded file in the MATLAB^® workspace, use the commands below (or similar ones if you modified the filenames above).

type oct2dec.m
type decodedfile

See Also

rsdecof, Block Coding

rsenc

rsgenpoly