tx_interleaver.m

来自「这是Space-Time Codes and MIMO Systems一书的同步」· M 代码 · 共 22 行

% Interleaver

function interleaved_bits = tx_interleaver(in_bits, SimulationParameters)

global SimulationConstants;

interleaver_depth = SimulationParameters.FFTPoints * get_bits_per_symbol(SimulationParameters.ModulationType);

num_symbols = length(in_bits)/interleaver_depth;

% Get interleaver pattern for symbols
single_intlvr_patt = tx_gen_intlvr_patt(interleaver_depth, SimulationParameters);

% Generate intereleaver pattern for the whole packet
intlvr_patt = interleaver_depth*ones(interleaver_depth, num_symbols);
intlvr_patt = intlvr_patt*diag(0:num_symbols-1);
intlvr_patt = intlvr_patt+repmat(single_intlvr_patt', 1, num_symbols);
intlvr_patt = intlvr_patt(:);

% Perform interleaving
interleaved_bits(intlvr_patt) = in_bits;