function [data_block]=get_datablock(data,block_size,iteration)%   [data_block]=get_datablock(data,block_size,iteration)%%	Output:%	data_block	- Function output (binary-vector)%	%   Input:%   data        - Data to be put in parts, (one row many columns!!) (binary-vector)%   block_size  - Size of datablock in each transmission (integer splitting data into correct size)%   iteration   - Iteration cycle from 0 to number_of_blocks (integer 0,...)%%   Short Theoretical Background for the Function:%   %   The function is meant to be called from an iteration-cycle,%   where iteration tells the function which block to be called.%%   If the block_size is not a integer-multiple of data, zeros are added.%   If iteration > number_of_blocks, data_block is set to 0.%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     %%% Function part of simulation for Space-Time%%% coding project, group Grey-2001.%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   Author: Stefan Uppg錼d%   Date: 2001-03-19%   Version: 1.0%   Revision (Name & Date):%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%first_value = 1 + (iteration * block_size);     % Elementnumber of first element in data to be extractedlast_value  = (iteration + 1) * block_size;number_of_blocks = ceil(length(data) / block_size);if(iteration < number_of_blocks-1)    data_block = data(first_value:last_value);elseif(iteration == number_of_blocks-1)    number_add = block_size - length(data(first_value:end));    % Number of zeros to add if block_size is not multiple of datalength    data_block = [data(first_value:end) zeros(1,number_add)];else    data_block = 0;end