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From: bethebest ho on 13 Aug 2010 03:15
snr=100;
>> beta=10;
>> Qe1=2*snr*rand(0,1000);Qea=2*snr*rand(0,1000);
>> Qi1=2*snr*rand(0,1000);Qia=2*snr*rand(0,1000);
>> Qe1=2*snr-Qea-Qi1-Qia;
>> a=(beta^2)*Qe1/(1+(beta^2)*Qi1);
>> b=(beta^2)*Qea/(1+(beta^2)*Qia);
>> alpha=1;
c=(sqrt(Qe1)+alpha*sqrt(Qea)).^2;
>> d=1+Qi1+(alpha^2)*Qia;
>> e=c/d;
if {min(a,b)>=e}
re=0.5*log2(1+e);
ri=0.5*log2(1+(beta^2)*Qi1)+0.5*log2(1+(beta^2)*Qia);
else {min(a,b)<e}
re=0.5*log2(1+min(a,b));
ri=0.5*log2(1+(beta^2)*Qi1)+0.5*log2(1+(beta^2)*Qia);
end;

the error is this
??? Conversion to logical from cell is not possible.
From: Ross W on 13 Aug 2010 03:38
"bethebest ho" <yellow11803(a)yahoo.com.tw> wrote in message <i42rea$boo$1(a)fred.mathworks.com>...
> snr=100;
> >> beta=10;
> >> Qe1=2*snr*rand(0,1000);Qea=2*snr*rand(0,1000);
> >> Qi1=2*snr*rand(0,1000);Qia=2*snr*rand(0,1000);
> >> Qe1=2*snr-Qea-Qi1-Qia;
> >> a=(beta^2)*Qe1/(1+(beta^2)*Qi1);
> >> b=(beta^2)*Qea/(1+(beta^2)*Qia);
> >> alpha=1;
> c=(sqrt(Qe1)+alpha*sqrt(Qea)).^2;
> >> d=1+Qi1+(alpha^2)*Qia;
> >> e=c/d;
> if {min(a,b)>=e}
> re=0.5*log2(1+e);
> ri=0.5*log2(1+(beta^2)*Qi1)+0.5*log2(1+(beta^2)*Qia);
> else {min(a,b)<e}
> re=0.5*log2(1+min(a,b));
> ri=0.5*log2(1+(beta^2)*Qi1)+0.5*log2(1+(beta^2)*Qia);
> end;
>
> the error is this
> ??? Conversion to logical from cell is not possible.

Hi

You have used {} instead of () in this line:

if {min(a,b)>=e}

Ross
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