clc;
fs?=?20e6;
gi?=?1/4;????????????????
fftlen?=?64;
gilen?=?gi*fftlen;??????????


ShortTrain?=?sqrt（13/6）?*?[0?0?1+j?0?0?0?-1-j?0?0?0?1+j?0?0?0?-1-j?...
???????????????????????0?0?0?-1-j?0?0?0?1+j?0?0?0?0?0?0?-1-j?0?0?0?...
???????????????????????-1-j?0?0?0?1+j?0?0?0?1+j?0?0?0?1+j?0?0?0?1+j?0?0].‘;

short_demap?=?zeros（64?1）;
short_demap（[7:32?34:59]:）?=?ShortTrain;
short_demap（[33:64?1:32]:）?=?short_demap;??
%?將頻域的短訓練序列轉化到時域
ShortTrain=sqrt（64）*ifft（sqrt（64/52）*short_demap）;??
ShortTrain?=ShortTrain（1:16）;
transmit=[ShortTrain;ShortTrain;ShortTrain;ShortTrain;ShortTrain;
??????????ShortTrain;ShortTrain;ShortTrain;ShortTrain;ShortTrain];

phase=zeros（11）;
mse=zeros（11）;
error?=?zeros（1500）;
snr?=?0:1:20;
for?snr_idx?=?1:length（snr）
????for?n?=?1:500??
????????len?=?length（transmit）;???%?計算傳輸信號長度
????????noise?=sqrt（1/（10^（snr（snr_idx）/10））/2）*（?randn（len1）+j*randn（len1））;
????????%?加噪聲
????????transmit1?=?transmit?+?noise;?
????????%?加頻偏?[0:total_length-1]/fs=nTs????▲f=0.2*fs/fftlen
????????cfo?=?0.2*fs/fftlen/fs*[0:len-1];
????????phase_shift?=?exp（j*2*pi*cfo）.‘;
????????transmit2?=?transmit1.*phase_shift;???%?將頻偏加到傳輸的信號上

????????LTE?=?16;??%長度為16的窗口
????????phase=0;
????????
????????for?i=1:（len-LTE）?????
????????????%每一個數據與d個數據后的數據共軛相乘，求總和
????????????phase=phase+transmit2（i）.*conj（transmit2（i+LTE））;
????????end?
????????
????????%求估計出的頻偏
????????cfo_est?=?-angle（phase）?/?（2*LTE*pi/fs）;??
????????%求頻偏估計誤差
????????error（n）?=?（cfo_est?-?（0.2*fs/fftlen））/（0.2*fs/fftlen）;?
????end
?
mse（snr_idx）?=?mean（abs（error）.^2）;
end

semilogy（snrmse‘-o‘）;
xlabel（‘SNR/dB‘）;
ylabel（‘MSE‘）;
grid?on;

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

?????文件???????1762??2019-05-29?14:49??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\aaa666666666.m

?????文件???????2305??2019-05-29?15:24??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\aaa7777777.m

?????文件???????4688??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\BasicOFDM.m

?????文件???????3463??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\BasicOFDM2_Channel.m

?????文件???????1989??2019-04-09?23:27??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?1\BasicOFDM.m

?????文件???????2830??2019-04-08?00:26??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?1\BasicOFDM_ChannelCoding.m

?????文件???????2919??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?1\BasicOFDM_Interleave.m

?????文件????????534??2019-04-07?22:15??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?1\ChannelResponse.m

?????文件????????847??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?1\rx_deinterleave.m

?????文件????????763??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?1\test_coding.m

?????文件????????279??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?1\test_Interleave.m

?????文件????????569??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?1\test_MQAM.m

?????文件???????1002??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?1\tx_interleaver.m

?????文件????????342??2019-05-18?15:40??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?2\filter_test.m

?????文件???????5091??2019-05-28?21:58??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?2\packet_detect_modified.m

?????文件????????388??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?2\short_train_gen.m

?????文件???????2263??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?2\test_mapping.m

?????文件???????4245??2019-05-18?17:09??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?2\test_packet_detect.m

?????文件???????1626??2019-05-05?22:14??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?2\test_preamble.m

?????文件????????381??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?2\tx_freqd_to_timed.m

?????文件????????897??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?3\test_cfo_freq.m

?????文件????????420??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?3\test_cfo_time.m

?????文件???????2330??2019-05-22?14:41??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?3\test_fine_time_sync.m

?????文件???????3763??2019-05-28?21:54??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?3\test_freq_sync.m

?????文件????????381??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?3\tx_freqd_to_timed.m

?????文件???????3656??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?4\test_channel_equ.m

?????文件???????3399??2019-05-28?21:58??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?4\test_channel_est.m

?????文件????????381??2018-06-01?15:01??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\Experiment?4\tx_freqd_to_timed.m

?????文件????????548??2019-05-29?14:22??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\finetimesync.m

?????文件????????521??2019-05-29?14:26??基于MATLAB的OFMD仿真實驗（課件+詳細代碼）\代碼\frequencysync.m

............此處省略30個文件信息