function?subr?=?demultiplex（r?alpha?puncture）;
%?Copyright?1998?Yufei?Wu
%?MPRG?lab?Virginia?Tech.
%?for?academic?use?only

%?At?receiver?end?serial?to?paralle?demultiplex?to?get?the?code?word?of?each
%?encoder
%?alpha:?interleaver?mapping?
%?puncture?=?0:?use?puncturing?to?increase?rate?to?1/2;
%?puncture?=?1;?unpunctured?rate?1/3;

%?frame?size?which?includes?info.?bits?and?tail?bits
L_total?=?length（r）/（2+puncture）;
subr?=?zeros（22*L_total）;

%?Extract?the?parity?bits?for?both?decoders
if?puncture?==?1	%?unpunctured
????r?=?reshape（r‘3L_total）;
????x_sys?=?r（1:）;
????subr（1:22:2:2*L_total）?=?r（2:3:）;
else????????????????%?punctured
????r?=?reshape（r‘2L_total）;
????x_sys?=?r（1:）;??
????subr（12:4:2*L_total）?=?r（21:2:L_total）;
????subr（24:4:2*L_total）?=?r（22:2:L_total）;
end???????

%?Extract?the?systematic?bits?for?both?decoders
subr（11:2:2*L_total）?=?x_sys;??????????%?For?decoder?one
subr（21:2:2*L_total）?=?x_sys（alpha）;	%?For?decoder?two

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

?????文件????????975??2009-05-06?16:12??EXIT\demultiplex.m

?????文件???????1456??2009-04-25?11:28??EXIT\encoderm.m

?????文件????????402??2009-05-13?11:12??EXIT\EXIT_g（111113）_EbN0_-0.2_rate_0.33333.mat

?????文件????????402??2009-05-11?10:42??EXIT\EXIT_g（2337）_EbN0_0.8_rate_0.5.mat

?????文件????????403??2009-05-10?23:15??EXIT\EXIT_g（2537）_EbN0_-0.2_rate_0.33333.mat

?????文件????????403??2009-05-10?23:04??EXIT\EXIT_g（2537）_EbN0_0_rate_0.33333.mat

?????文件????????403??2009-05-13?10:51??EXIT\EXIT_g（3721）_EbN0_0.6_rate_0.33333.mat

?????文件????????403??2009-05-11?13:36??EXIT\EXIT_g（3721）_EbN0_0.6_rate_0.5.mat

?????文件???????3193??2009-05-16?16:54??EXIT\EXIT_tc.m

?????文件?????420415??2009-06-22?23:29??EXIT\EXIT圖在迭代過程分析中的應用.pdf

?????文件???????9731??2009-05-11?11:24??EXIT\g（2337）_EbN0_0.8_rate_0.5.fig

?????文件???????6051??2009-05-11?11:39??EXIT\g（2537）_EbN0_-0.2_rate_0.33333.fig

?????文件???????5923??2009-05-11?11:46??EXIT\g（3721）_EbN0_0.6_rate_0.33333.fig

?????文件???????5918??2009-05-11?11:47??EXIT\g（3721）_EbN0_0.6_rate_0.5.fig

?????文件???????1654??2009-05-09?15:45??EXIT\generate_llrs.m

?????文件????????281??2009-05-06?16:12??EXIT\int_state.m

?????文件????????104??2009-05-10?15:01??EXIT\invJ1.m

?????文件?????????84??2009-05-10?15:01??EXIT\J1.m

?????文件???????1279??2009-05-07?14:51??EXIT\jac.m

?????文件???????3285??2009-06-27?11:14??EXIT\logmap.m

?????文件????????655??2009-05-11?22:50??EXIT\measure_mutual_information_averaging.m

?????文件???????3618??2009-05-10?10:04??EXIT\measure_mutual_information_histogram.m

?????文件???????1637??2009-07-12?12:09??EXIT\readme.txt

?????文件???????1040??2009-05-10?10:23??EXIT\rsc_encode.m

?????文件????????979??2009-05-10?22:18??EXIT\tcencoder.m

?????文件???????1329??2009-05-13?11:49??EXIT\Traj_g（111113）_EbN0_-0.2_ntraj_1_rate_0.33333_L_10000.mat

?????文件???????5526??2009-05-16?16:45??EXIT\Traj_g（111113）_EbN0_-0.2_ntraj_5_rate_0.33333_L_50000.mat

?????文件???????4767??2009-05-11?11:14??EXIT\Traj_g（2337）_EbN0_0.8_ntraj_10_rate_0.5_L_10000.mat

?????文件????????816??2009-05-10?23:19??EXIT\Traj_g（2537）_EbN0_-0.2_ntraj_1_rate_0.33333_L_10000.mat

?????文件????????604??2009-05-10?23:07??EXIT\Traj_g（2537）_EbN0_0_ntraj_1_rate_0.33333_L_10000.mat

............此處省略13個文件信息