0
50
100
150
200
250
-1.5
-1
-0.5
0
0.5
1
Impulse response realizations
Time (nS)
-100 -80 -60 -40 -20
0
20
40
60
80
100
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
Autocorrelation of UWB channel
Time (ns)
(a)
(b)
Normalized amplitude
CM3, channel 1, energy ratio
= 50%
Figure 1.3
(a) The impulse response of the channel model from IEEE 802.15.3a CM3 for indoors.
The y-axis is the amplitude of the channel. (b) Autocorrelation of a channel impulse response
R
hh
(t )
= h(t) h(-t) for CM3 channel