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Performance Evaluation of WiMAX/IEEE 802.16 OFDM Physical Layer - page 104 / 107

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'000100' '000110' '000111' '010011' '010010' '010000' '010001' '010101' '010100' '010110' '010111' '011011' '011010' '011000' '011001' '011101' '011100' '011110' '011111'];

% binary to decimal conversion mapping_16qam=bin2dec(graymap_16).'; mapping_64qam=bin2dec(graymap_64).'; mapping_qpsk= [ 2 3 0 1];

clear graymap_16; clear graymap_64;

%QPSK ­ implemented as 4 QAM

constell_qpsk=qammod([0:3],4); IEEE80216params.Modulation.gray_map_qpsk(mapping_qpsk(:)+1)=constell_qpsk(:); %16QAM

constell_16qam=qammod([0:15],16); I E E E 8 0 2 1 6 p a r a m s . M o d u l a t i o n . g r a y _ m a p _ 1 6 q a m ( m a p p i n g _ 1 6 q a m ( : ) + 1 ) = c o n s t e l l _ 1 6 q a m ( : ) %64QAM ;

constell_64qam=qammod([0:63],64); I E E E 8 0 2 1 6 p a r a m s . M o d u l a t i o n . g r a y _ m a p _ 6 4 q a m ( m a p p i n g _ 6 4 q a m ( : ) + 1 ) = c o n s t e l l _ 6 4 q a m ( : ) clear mapping_qpsk; clear mapping_16qam; clear mapping_64qam; clear constell_qpsk; clear constell_16qam; clear constell_64qam; ;

IEEE80216params.simOpts.TxDiv=1; IEEE80216params.simOpts.RxDiv=1;

IEEE80216params.simOpts.DoppTaps=256 % taps in doppler filter

IEEE80216params.simOpts.ChanModel='SUI2'

switch(IEEE80216params.simOpts.ChanModel) case 'SUI1' IEEE80216params.channel.P=[0 ­15 ­20];

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