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Wishart eigenvalues
Hi, all,
Let's consider A=UB, where B is Wishart (and Hermitian) with eigenvalues \[\lambda_i\], and U is diagonal and invertible, all are nxn squared matrix.
Do we have any expression or approximation for the eigenalues \[\alpha_i\] of matrix A by \[\lambda_i\]?
Best...
Somebody told me that:
SD can approach ML only if the radius is large enough to cover
every lattice points which skewed by channel and shifted by noise.
If we just make sure that we will find at least one point each searching time
in SD, that means we will not cover the whole lattice points...
sphere decoder is a ml maximum likelihood
Hi,
Do you think the performance of SD (sphere decoder) is just always
equals to ML (maximum likelihood) detection ?
regards,
gama
Hi,
if we have M-Tx and N-Rx antennas respectively,
and using 16-QAM,
what is the SNR equation or the noise variance (σ²) we assign in Matlab?
please help me.
gama
Hi all,
If we use the model x=Hs+v for a MIMO system where
x:nx1 (the received vector)
H:nxm (channel matrix and each elements belows i.i.d. complex gaussian(0,1))
s:mx1 (the transmitted data vector)
v:nx1 (the noise vector and each elements belows i.i.d. complex gaussian(0,δ²))
m and n are Tx...
awgn channel capacity
Hi,
in AWGN, we have channel capacity equation:
C = (½)log(1+SNR),
but if we use QAM16,
then the SNR means Eb/No or Es/No or Eav/No?
and even more if we are in Linear-filtering channel,
e.g, h(t)=0.8δ(t)-0.48δ(t-T)+0.36δ(t-2T),
then how we change the C equation or not...
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