Báo cáo hóa học: "Research Article DFT-Based Channel Estimation with Symmetric Extension for OFDMA Systems" pot
Báo cáo hóa học: "Research Article DFT-Based Channel Estimation with Symmetric Extension for OFDMA Systems" pot
... Communications and Networking
Volume 2009, Article ID 647130, 8 pages
doi:10.1155/2009/647130
Research Article
DFT-Based Channel Estimation with Symmetric
Extension for OFDMA Systems
Yi Wang,
1, 2
Lihua ... Networking
LS channel
estimation
H
partial
0
H
partial
1
.
.
.
H
partial
M
−1
Symmetric
extension
H
symmetric
0
H
symmetric
1
H
symmetric
2M
−...
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H
k
n,m
=
Y
k
n
(m)
X
k
m
= ... instance
m
0
and m, for example, it is assumed that P
z
(m) ≈ P
z
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0
)
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i
is replaced
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i
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n(d
k
, h
i
, w
j
) ... history with
probability P(w
i
).
(2) Select a document d
k
with probability P(d
k
| w
i
).
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i
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SNR
(63)
for l
= 0, , n − 1andp
n
= 1 − F
γ
((2
R
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γ
(x) = 1 − e
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.
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N
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K
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1
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