tx_make_int_num_ofdm_syms.m

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function out_bits = tx_make_int_num_ofdm_syms(tx_bits,N_subcarrier,map_flag)
%N_subcarrierOFDM符号的子载波数，map_flag调制方式标志，如QPSK，map_flag=2
%一般情况下，该函数不必使用


n_tx_bits = length(tx_bits);

n_syms = N_subcarrier;
n_bits_per_sym = map_flag;
n_ofdm_syms = ceil(n_tx_bits/(n_syms*n_bits_per_sym));

% % if Radon Hurwitz transform is used we need an even number of OFDM symbols
% if sim_options.UseTxDiv
%    if rem(n_ofdm_syms,2) ~= 0
%       n_ofdm_syms = n_ofdm_syms + 1;
%    end
% end

pad_bits = randn(1, n_ofdm_syms*n_syms*n_bits_per_sym - n_tx_bits) > 0;
out_bits = [tx_bits  pad_bits];