mtx_grouping.m

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%  Property of Freescale
%  Freescale Confidential Proprietary
%  Freescale Copyright (C) 2005 All rights reserved
%  ----------------------------------------------------------------------------
%  $RCSfile: mTx_grouping.m.rca $
%  $Revision: 1.1 $
%  $Date: Mon Jan 22 10:36:36 2007 $
%  Target: Matlab
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%
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% Symbol grouping 8.4.9.2.3.4.3 IEEE Std 802.16-2004 P.602
% en_grouping = mTx_grouping(y) implements the symbol grouping
%
% Output:
% y => Grouped six subblocks data consist of the interleaved A
% and B subblock sequence, followed by a symbol-by-symbol multiplexed
% sequence of the interleaved Y1 and Y2 subblock sequences, followed
% by a symbol-by-symbol multiplexed sequence of the interleaved W1 and
% W2 subblock sequences.
% Input:
% x => Six interleaved subblocks data (A, B, Y1, Y2, W1, W2)


function en_grouping = mTx_grouping(y)

[row, L_total] = size(y);

for i = 1:L_total
    en_grouping(1,i) = y(1,i);
    en_grouping(1,L_total+i) = y(2,i);
end

% Symbol-by-symbol multiplexed sequence
for i = 1:L_total
    grouping_Y(1,2*i-1) = y(3,i);
    grouping_Y(1,2*i) = y(4,i);
    grouping_W(1,2*i-1) = y(5,i);
    grouping_W(1,2*i) = y(6,i);
end

en_grouping(1,2*L_total+1:4*L_total) = grouping_Y;
en_grouping(1,4*L_total+1:6*L_total) = grouping_W;