tx_diversity1.m

MIMO-OFDM 信道的自适应仿真程序

function syms_out = tx_diversity1(symbols,H)

%if sim_options.UseTxDiv
   % Radon-Hurwitz or Alamouti tx diversity
%symbols
num_symbols = length(symbols);

ant1_syms = zeros(1, num_symbols);
ant2_syms = zeros(1, num_symbols);

% unchanged symbols
ant1_syms(:,1:2:num_symbols) = symbols(:,1:2:num_symbols);
ant2_syms(:,1:2:num_symbols) = symbols(:,2:2:num_symbols);

% transformed symbols
ant1_syms(:,2:2:num_symbols) = -conj(symbols(:,2:2:num_symbols));
ant2_syms(:,2:2:num_symbols) = conj(symbols(:,1:2:num_symbols));

syms_out = zeros(2, length(symbols));

syms_out(1,:) = ant1_syms(:).';
syms_out(2,:) = ant2_syms(:).';
   
   %else
   % No diversity
   %div_ofdm_syms = ofdm_symbols;
   %end
clear num_symbols
clear ant1_syms
clear ant2_syms