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opt = V H V −1 V H h<br />
<br />
<br />
∞ <br />
(|hd (n) − h (n) |) 2<br />
mina,b<br />
n=0<br />
<br />
⎧ ⎛<br />
⎨ ∞<br />
<br />
M <br />
minα,β ⎝ |hd (n) − αie<br />
⎩<br />
βin 2<br />
|<br />
⎞⎫<br />
⎬<br />
⎠<br />
⎭<br />
n=0<br />
<br />
αi βi<br />
<br />
<br />
⎛<br />
⎜<br />
⎝<br />
hd (0) 0 ... 0<br />
hd (1) hd (0) ... 0<br />
<br />
<br />
<br />
i=1<br />
hd (N − 1) hd (N − 2) ... hd (N − M)<br />
⎞ ⎛<br />
⎟ ⎜<br />
⎟ ⎜<br />
⎟ ⎜<br />
⎟ ⎜<br />
⎟ ⎜<br />
⎠ ⎝<br />
a1<br />
a2<br />
<br />
aM<br />
⎞<br />
⎛<br />
⎟ ⎜<br />
⎟ ⎜<br />
⎟ ⎜<br />
⎟ ≈ − ⎜<br />
⎟ ⎜<br />
⎠ ⎝<br />
hd (1)<br />
hd (2)<br />
<br />
hd (N)<br />
a = Hd H −1<br />
Hd Hd H hd<br />
Hd H Hd = R rij hd <br />
<br />
<br />
rij =<br />
N−max{ i,j } <br />
k=0<br />
Hd H hd =<br />
rd (i) =<br />
N−i <br />
n=0<br />
(hd (k) hd (k + |i − j|))<br />
⎛<br />
⎜<br />
⎝<br />
rd (1)<br />
rd (2)<br />
rd (3)<br />
<br />
rd (M)<br />
⎞<br />
⎟<br />
⎠<br />
(hd (n) hd (n + i))<br />
aopt = − RH <br />
rd Ra = −r R M × M a M × 1 r M × 1<br />
<br />
⎞<br />
⎟<br />
⎠