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    文件類型: .rar
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    發布日期: 2021-06-08
  • 語言: Matlab
  • 標簽: OFDM??

資源簡介

matlab正交頻分復用(OFDM)技術matlab實現仿真源代碼

資源截圖

代碼片段和文件信息

%?Analysis

disp(‘?‘)?disp(‘------------------------------------------------------------‘)
disp(‘Preparing?Analysis‘)

figure(2)?clf
if?(input_type?==?1)?&?(test_input_type?==?1)
subplot(221)?stem(data_in)?title(‘OFDM?二進制輸入數據‘);
subplot(223)?stem(output)?title(‘OFDM?二進制恢復數據‘)
else
subplot(221)?plot(data_samples)?title(‘OFDM?輸入信號‘);
subplot(223)?plot(output_samples)?title(‘OFDM?恢復信號‘);
end
subplot(222)?plot(xmit)?title(‘OFDM發射‘);
subplot(224)?plot(recv)?title(‘OFDM接收‘);


%?dig_x_axis?=?(1:length(QAM_tx_data))/length(QAM_tx_data);
%? figure(4)?clf?subplot(212)
%? freq_data?=?abs(fft(QAM_rx_data));
%? L?=?length(freq_data)/2;

dig_x_axis?=?(1:length(xmit))/length(xmit);
figure(3)?clf

if?channel_on?==1
num?=?[1?zeros(1?d1-1)?a1?zeros(1?d2-d1-1)?a2];
den?=?[1];
[H?W]?=?freqz(num?den?512);
mag?=?20*log10(abs(H));
phase?=?angle(H)?*?180/pi;

subplot(313)
freq_data?=?abs(fft(recv));
L?=?length(freq_data)/2;
plot(dig_x_axis(1:L)?freq_data(1:L))
xlabel(‘OFDM接收端FFT‘)
axis_temp?=?axis;

subplot(311)
freq_data?=?abs(fft(xmit));
plot(dig_x_axis(1:L)?freq_data(1:L))?axis(axis_temp)
title(‘OFDM發射端FFT‘)

subplot(312)
plot(W/(2*pi)mag)
ylabel(‘信道幅度響應‘)
else
subplot(212)
freq_data?=?abs(fft(recv));
L?=?length(freq_data)/2;
plot(dig_x_axis(1:L)?freq_data(1:L))
xlabel(‘OFDM接收端FFT‘)
axis_temp?=?axis;

subplot(211)
freq_data?=?abs(fft(xmit));
plot(dig_x_axis(1:L)?freq_data(1:L))?axis(axis_temp)
title(‘OFDM發射端FFT‘)
end

%?if?file_input_type?==?4
%? figure(5)
%? subplot(211)
%? image(data_in);
%? colormap(map);
%? subplot(212)
%? image(output);
%? colormap(map);
%?end

if?do_QAM?==?1? %?analyze?if?QAM?was?done

figure(4)?clf
if?(input_type?==?1)?&?(test_input_type?==?1)
subplot(221)?stem(data_in)?title(‘QAM?Binary?Input?Data‘);
subplot(223)?stem(QAM_data_out)?title(‘QAM?Recovered?Binary?Data‘)
else
subplot(221)?plot(data_samples)?title(‘QAM?輸入信號‘);
subplot(223)?plot(QAM_output_samples)?title(‘QAM?恢復信號‘);
end
subplot(222)?plot(QAM_tx_data)?title(‘發射端?QAM‘);
subplot(224)?plot(QAM_rx_data)?title(‘接收端?QAM‘);

dig_x_axis?=?(1:length(QAM_tx_data))/length(QAM_tx_data);
figure(5)?clf

if?channel_on?==1
subplot(313)
freq_data?=?abs(fft(QAM_rx_data));
L?=?length(freq_data)/2;
plot(dig_x_axis(1:L)?freq_data(1:L))
xlabel(‘QAM接收端FFT‘)
axis_temp?=?axis;

subplot(311)
freq_data?=?abs(fft(QAM_tx_data));
? plot(dig_x_axis(1:L)freq_data(1:L))?axis(axis_temp)
title(‘QAM發射端FFT‘)

subplot(312)
plot(W/(2*pi)mag)
ylabel(‘信道幅度響應‘)
else
subplot(212)
freq_data?=?abs(fft(QAM_rx_data));
L?=?length(freq_data)/2;
plot(dig_x_axis(1:L)?freq_data(1:L))
title(‘QAM接收端FFT‘)
axis_temp?=?axis;

subplot(211)
freq_data?=?abs(fft(QAM_tx_data));
? plot(dig_x_axis(1:L)freq_data(1:L))?axis(axis_temp)
title(‘QAM發射端FFT‘)
end

%?Pl

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????5157??2005-06-01?22:26??ofdm系統matlab仿真源代碼\analysis.m

?????文件???????2857??2001-04-23?14:30??ofdm系統matlab仿真源代碼\a_filter_design.m

?????文件???????4168??2001-04-23?14:30??ofdm系統matlab仿真源代碼\basicgui_win.m

?????文件????????219??2001-04-23?14:30??ofdm系統matlab仿真源代碼\bin2eight.m

?????文件????????227??2001-04-23?14:30??ofdm系統matlab仿真源代碼\bin2pol.m

?????文件??????28848??2004-04-13?20:45??ofdm系統matlab仿真源代碼\buaa.jpg

?????文件????????407??2001-04-23?14:30??ofdm系統matlab仿真源代碼\ch.m

?????文件????????162??2001-04-23?14:30??ofdm系統matlab仿真源代碼\ch_clipping.m

?????文件????????210??2001-04-23?14:30??ofdm系統matlab仿真源代碼\ch_multipath.m

?????文件????????265??2001-04-23?14:30??ofdm系統matlab仿真源代碼\ch_noise.m

?????文件??????13264??2005-06-17?08:32??ofdm系統matlab仿真源代碼\DDP.fig

?????文件???????4843??2005-06-14?21:38??ofdm系統matlab仿真源代碼\DDP.m

?????文件????????217??2001-04-23?14:30??ofdm系統matlab仿真源代碼\eight2bin.m

?????文件???????8832??2005-06-15?07:55??ofdm系統matlab仿真源代碼\help_DDP.fig

?????文件???????2871??2004-04-21?13:24??ofdm系統matlab仿真源代碼\help_DDP.m

?????文件????????524??2001-04-23?14:29??ofdm系統matlab仿真源代碼\OFDM.m

?????文件????????428??2005-06-15?08:10??ofdm系統matlab仿真源代碼\OFDM_out.wav

?????文件????????522??2005-06-16?15:47??ofdm系統matlab仿真源代碼\OFDM_text_out.txt

?????文件????????431??2001-04-23?14:30??ofdm系統matlab仿真源代碼\pol2bin.m

?????文件???????4691??2001-04-23?14:29??ofdm系統matlab仿真源代碼\QAM.m

?????文件????????428??2005-06-15?08:10??ofdm系統matlab仿真源代碼\QAM_out.wav

?????文件????????531??2005-06-16?14:18??ofdm系統matlab仿真源代碼\QAM_text_out.asv

?????文件????????524??2005-06-16?15:47??ofdm系統matlab仿真源代碼\QAM_text_out.txt

?????文件???????1001??2001-04-23?14:30??ofdm系統matlab仿真源代碼\read.m

?????文件????????519??2001-04-23?14:30??ofdm系統matlab仿真源代碼\rx.m

?????文件????????222??2001-04-23?14:30??ofdm系統matlab仿真源代碼\rx_chunk.m

?????文件????????977??2001-04-23?14:30??ofdm系統matlab仿真源代碼\rx_dechunk.m

?????文件???????2969??2005-06-14?17:18??ofdm系統matlab仿真源代碼\setupw.m

?????文件???????2973??2005-06-14?17:51??ofdm系統matlab仿真源代碼\setupy.m

?????文件????????428??2001-04-23?14:30??ofdm系統matlab仿真源代碼\shortest.wav

............此處省略26個文件信息

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