write.m

这是一个matlab程序

% write

% ******************TEST OUTPUT*********************************
if input_type == 1
	
	if test_input_type == 1
		%already binary - do nothing
	end
	
	if (test_input_type == 2) | (test_input_type == 3)
		%random input     OR     sine wave samples
		output_samples = zeros(1,floor(length(output)/8));  %extra zeros are not original data
		for i = 1:length(output_samples)
			output_samples(i) = bin2eight(output(1 + (i-1)*8:(i-1)*8 + 8));
		end
		if do_QAM == 1
			QAM_output_samples = zeros(1,floor(length(QAM_data_out)/8));
			for i = 1:length(QAM_output_samples)
				QAM_output_samples(i) = bin2eight(QAM_data_out(1 + (i-1)*8:(i-1)*8 + 8));
			end
		end
	end
end

% ******************FILE OUTPUT*********************************
if input_type == 2

	if file_input_type == 1
		%binary file output - not implemented
	end

	if file_input_type == 2
		%text file output
		output_samples = zeros(1,floor(length(output)/8));  %extra zeros are not original data
		for i = 1:length(output_samples)
			output_samples(i) = bin2eight(output(1 + (i-1)*8:(i-1)*8 + 8));
		end
		file = fopen('OFDM_text_out.txt','wt+');
		fwrite(file,output_samples,'char');
		fclose(file);
		if do_QAM == 1
			QAM_output_samples = zeros(1,floor(length(QAM_data_out)/8));  %extra zeros are not original data
			for i = 1:length(QAM_output_samples)
				QAM_output_samples(i) = bin2eight(QAM_data_out(1 + (i-1)*8:(i-1)*8 + 8));
			end
			file = fopen('QAM_text_out.txt','wt+');
			fwrite(file,QAM_output_samples,'char');
			fclose(file);
		end
	end

	if file_input_type == 3
		output_samples_big = zeros(1,floor(length(output)/8));  %extra zeros are not original data
		for i = 1:length(output_samples_big)
			output_samples_big(i) = bin2eight(output(1 + (i-1)*8:(i-1)*8 + 8));
		end
		%convert dynamic range from 0:255 to -1:1
		output_samples = (output_samples_big-127)/128;
		%sound file output
		wavwrite(output_samples, 11025, 8, 'OFDM_out.wav')
		if do_QAM == 1
			QAM_data_out_big = zeros(1,floor(length(QAM_data_out)/8));
			for i = 1:length(QAM_data_out_big)
				QAM_data_out_big(i) = bin2eight(QAM_data_out(1 + (i-1)*8:(i-1)*8 + 8));
			end
			%convert dynamic range from 0:255 to -1:1
			QAM_output_samples = (QAM_data_out_big-127)/128;
			%sound file output
			wavwrite(QAM_output_samples, 11025, 8, 'QAM_out.wav')
		end
	end
	
	if file_input_type == 4
		%image file output - not implemented		
	end

end