wifipreamble.m

MIT关于OFDM收发器、WIFI收发器的ASIC和 FPGA硬件开发源码及资料

%----------------------------------------------------------------------%
% The MIT License 
% 
% Copyright (c) 2007 Alfred Man Cheuk Ng, [e-mail] 
% 
% Permission is hereby granted, free of charge, to any person 
% obtaining a copy of this software and associated documentation 
% files (the "Software"), to deal in the Software without 
% restriction, including without limitation the rights to use,
% copy, modify, merge, publish, distribute, sublicense, and/or sell
% copies of the Software, and to permit persons to whom the
% Software is furnished to do so, subject to the following conditions:
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% The above copyright notice and this permission notice shall be
% included in all copies or substantial portions of the Software.
% 
% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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% OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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% OTHER DEALINGS IN THE SOFTWARE.
%----------------------------------------------------------------------%

pShort = [ 0;
 	   0; 0; 0; -1-1j; 0; 0; 0; -1-1j; 0; 0; 0; 1+1j; 0; 0; 0; 1+1j; 0; 0; 0; 1+1j; 0; 0; 0; 1+1j; 0; 0;
           0; 0; 0; 0; 0; 0; 0; 0; 0; 0; 0;
	   0; 0; 1+1j; 0; 0; 0; -1-1j; 0; 0; 0; 1+1j; 0; 0; 0; -1-1j; 0; 0; 0; -1-1j; 0; 0; 0; 1+1j; 0; 0; 0; 
	  ];
pAllSz = size([pShort; pShort]);
pShort = sqrt(13/6) * pShort;
pShort = ifft(pShort);
pShortRel = real([pShort; pShort]);
pShortImg = imag([pShort; pShort]);
fid = fopen('WiFiPreambles.txt', 'wt');
fprintf(fid,'Short Preambles:\n');
for row = 1:pAllSz(1)
     fprintf(fid,'%6.5f, %6.5f\n',pShortRel(row),pShortImg(row));
end
pLong = [ 0;
	  1; -1; -1; 1; 1; -1; 1; -1; 1; -1; -1; -1; -1; -1; 1; 1; -1; -1; 1; -1; 1; -1; 1; 1; 1; 1;
          0; 0; 0; 0; 0; 0; 0; 0; 0; 0; 0;
	  1; 1; -1; -1; 1; 1; -1; 1; -1; 1; 1; 1; 1; 1; 1; -1; -1; 1; 1; -1; 1; -1; 1; 1; 1; 1; ];
pLong = ifft(pLong);
pLongRel = real([pLong; pLong]);
pLongImg = imag([pLong; pLong]);
fprintf(fid,'Long Preambles:\n');
for row = 1:pAllSz(1)
     fprintf(fid,'%6.5f, %6.5f\n',pLongRel(row),pLongImg(row));
end
fclose(fid);