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hi all
i am trying to simulate QPSk in flat fading channel , i do it by a classical way
but when i use raylieighchan and awgn i got non proper performance
%code
h=raylieghchan;
x=filter(h,data);
Rx=awgn(x,snr,'measure');
do any1 know why??
difference between orthorgonal and orthonormal
first the using of orthonormal as basis functions so it should be normalized
and when we do dot product of two orthogonal functions the result is zero
but when we do dot product for orthogonal function with itself the result will be constant or 1...
what is the meaning of achieve in simple
full diversity means that when u use Mt transmitter antenna and Mr receiver antenna the probability of error increase exponential to Mr or Mt or both depends on schemes
so if it depend on Mt*Mr so the technique provide full diversity this is optimal...
maximum power for 3G
simply uplink is link from user to BTS
and downlink is from BTS to user
so u can know the power of downlnk easily as this determine th coverage of BTS over cell
and power of uplink is very small as BTS will detect it even it weak due to the sensitivity of antenna and...
probability
ok no one answer
so i will put wt i reach
that when i need p(r/x) so x yield to be constant so p(r/x) will be constant multiply in dist of b plus dist of n
but wt is p(r)???this will be two r v multiplication
probability
hi all
r = x*y + n
x , y ,n normal distribution with zero mean and segma1^2 ,segma2^2 , segma3^2
the requirement is P(r/x)??
can anyone offer suggestions for this???
summation in matlab
in fact i don't know this equation but u can try this
the double summation is exactly two "for loops" and their counters pass through the vector of T and gamma and taw
if this is not enough ,try to explain your equation more
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