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| 型号： | TPTDSCDMAWP |
| 英文描述： | Spatial Temporal Processing in TD-SCDMA |
| 中文描述： | 时间空间处理在TD - SCDMA |
| 文件页数： | 5/23页 |
| 文件大小： | 415K |
| 代理商： | TPTDSCDMAWP |
Spatial Temporal Processing in TD-SCDMA
Error! Reference source not found.
13
Hd = [ Hd
(1), H
d
(2),……, H
d
(K)]
(16)
(Note that there is no transpose operation)
There is a close link between the non-directional channel impulse response and
the directional channel impulse response. The non-directional channel impulse
response for a given user k and given antenna ka is the summation of all
directional channel impulse responses of the user k on the antenna ka:
∑
=
)
(
1
)
,
(
)
,
(
ka)
(k,
k
Kd
kd
k
d
kd
ka
k
j
e
h
φ
(17)
where
φ(k,ka,kd) = {2πL(ka)cos(β(k,kd) - α(ka) )}/λ
k=1…K
ka = 1…Ka and kd =
1…Kd
(k) ;
Reference point
Signal k, DoA kd
Antenna ka
L
(ka)
Interference ki
β(k,kd)
γ(ki)
α(ka)
Figure 4-1 Antenna array model
For a given user k and DoA kd , e
j
φ(k,ka,kd) ( ka = 1….Ka) forms its steering vector.
Thus we define:
A
(k) = [ a(k,1), a(k,2),….., a(k,Kd(k))]
k=1…,K
(18)
as the user k
th user’s steering matrix. Then the relation between the directional
channel impulse response and non-directional channel impulse response is given
by
T
k
d
T
kd
k
kd
k
Kd
kd
k
)
(
)
(
)
,
(
)
,
(
d
)
(
1
)
(
A
H
a
h
H
=
∑
=
(19)
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