%傳統(tǒng)盲多用戶檢測恒模算法，該程序調用goldseq.mat和b.mat兩個數(shù)據(jù)文件，goldseq.mat由Gold碼產(chǎn)生
%函數(shù)產(chǎn)生b.mat由Matlab中的Simulink的Bernoulli?Binary?Generator?模塊產(chǎn)生。運算結果以圖形輸出
%SINR（dB）.
function?SINR=cma_bmud（）
fbconnection1=[0?1?0?0?1];
fbconnection2=[1?0?0?0?1];
%goldseq=gold_seq（fbconnection1fbconnection2）;
mseq1=m_sequence（fbconnection1）;
mseq2=m_sequence（fbconnection2）;
L=2^length（fbconnection1）-1;
for?shift_amount=0:L-1
????shift_mseq2=[mseq2（shift_amount+1:L）?mseq2（1:shift_amount）];?%對第二個m序列進行循環(huán)移位
????goldseq（shift_amount+1:）=mod（mseq1+shift_mseq22）;?%m1序列和循環(huán)移位后的m2序列模2加后即為gold序列
end
ind1=find（goldseq==0）;?%將gold序列的0變?yōu)?1；
goldseq（ind1）=-1;
b=randsrc（610000）;
%gold碼歸一化
goldseq?=?1/sqrt（31）*goldseq;
%期望用戶擴頻序列
s1=goldseq（1:）‘;
s2=goldseq（2:）‘;
s3=goldseq（3:）‘;
s4=goldseq（4:）‘;
s5=goldseq（5:）‘;
s6=goldseq（6:）‘;
A2=10;
A3=10;
A4=10;
A5=10;
A6=10;
w=s1;
u=10^-4;
r1=goldseq（1:）‘*b（1:）;
r2=goldseq（2:）‘*b（2:）;
r3=goldseq（3:）‘*b（3:）;
r4=goldseq（4:）‘*b（4:）;
r5=goldseq（5:）‘*b（5:）;
r6=goldseq（6:）‘*b（6:）;
r=r1+A2*r2+A3*r3+A4*r4+A5*r5+A6*r6;
SNR=20;
r=awgn（rSNR）;
for?i=1:1000
????x（:i）=r（:i）;
????y（i）=w‘*x（:i）;
????w=w-u*（y（i）^2-1）*y（i）*x（:i）;
????n=（A2*w‘*s2）^2+（A3*w‘*s3）^2+（A4*w‘*s4）^2+（A5*w‘*s5）^2+（A6*w‘*s6）^2+w‘*0.01*w;
????SINR（i）=（（w‘*s1）^2）/n;
end
i=1:1000;
plot（i10*log10（SINR））;
xlabel（‘迭代次數(shù)‘）;
ylabel（‘信號干擾噪聲比SINR（dB）‘）;
title（‘CMA多用戶檢測‘）;

?屬性????????????大小?????日期????時間???名稱
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?????文件???????1519??2007-06-05?01:10??多用戶檢測MATLAB程序\mud\cma_bmud.m

?????文件????????362??2007-06-05?00:40??多用戶檢測MATLAB程序\mud\gold_seq.m

?????文件????????960??2007-05-21?21:47??多用戶檢測MATLAB程序\mud\lscma.m

?????文件???????1416??2007-06-05?01:12??多用戶檢測MATLAB程序\mud\lscma_new.m

?????文件???????3028??2007-06-04?01:43??多用戶檢測MATLAB程序\mud\mmse.m

?????文件????????435??2007-05-21?21:47??多用戶檢測MATLAB程序\mud\m_sequence.m

?????文件??????16339??2007-05-22?03:04??多用戶檢測MATLAB程序\mud\untitled.mdl

?????目錄??????????0??2009-05-11?07:52??多用戶檢測MATLAB程序\mud

?????文件???????1466??2007-06-18?22:04??多用戶檢測MATLAB程序\new?file\cmalscma.m

?????文件???????2075??2007-06-18?22:04??多用戶檢測MATLAB程序\new?file\cmammsedec_mud.m

?????文件???????2876??2007-06-19?11:24??多用戶檢測MATLAB程序\new?file\cmammsedec_mud_2.m

?????文件????????917??2007-06-18?22:04??多用戶檢測MATLAB程序\new?file\cma_bmud.m

?????文件????????361??2007-06-19?11:00??多用戶檢測MATLAB程序\new?file\gold_seq.m

?????文件????????987??2007-06-18?22:04??多用戶檢測MATLAB程序\new?file\lscma.m

?????文件???????1761??2007-06-18?22:04??多用戶檢測MATLAB程序\new?file\lscmacma_mud.m

?????文件????????435??2007-05-21?21:47??多用戶檢測MATLAB程序\new?file\m_sequence.m

?????目錄??????????0??2009-05-11?07:52??多用戶檢測MATLAB程序\new?file

?????目錄??????????0??2009-05-11?07:52??多用戶檢測MATLAB程序

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