rx_dechunk.m

本程序实现了OFDM系统详尽的方针

% rx_dechunk

% take out zeros_between from recv_spaced_chunks --> recv_padded_chunks
recv_padded_chunks = zeros(num_chunks, num_carriers+num_zeros);
i = 1;
for k = zeros_between +1:zeros_between +1:fft_size/2
	recv_padded_chunks(1:num_chunks,i) = recv_spaced_chunks(1:num_chunks,k);
	i = i+1;
end

% take out num_zeros from padded chunks --> recv_chunks
recv_chunks = zeros(num_chunks, num_carriers);
recv_chunks = recv_padded_chunks(1:num_chunks, num_zeros+1:num_carriers+num_zeros);

% Recover bit stream by placing reconstructed frequency domain data in series
recv_dechunked = zeros(1, num_chunks*num_carriers);
for i = 1:num_chunks
	for k = 1:num_carriers
		recv_dechunked(k + (i-1)*num_carriers*2) = real(recv_chunks(i,k));
		recv_dechunked(k + (i-1)*num_carriers*2 + num_carriers) = imag(recv_chunks(i,k));
	end
end

% take out trailing zeros from output --> output
output_analog = recv_dechunked(1:data_length);
output = sign(output_analog);