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Chapter 13 Using Mobile WiMAX Signal Analyzer
Measurement example
Figure 232 Multipath profile measurement with Mobile WiMAX OTA signal analyzer
Preamble power trend
The Preamble Power Trend shows power variations of a strongest preamble signal over time along
with the relative power trend compare to total preamble power. Searching preamble index can be set
auto to detect strongest or manual to search specific preamble. Positioning information, latitude, and
longitude will be displayed if a GPS antenna is supplied and locked to the GPS satellites on the bottom
of the screen.
Setting measure setup
After configuring test parameters as described in the "Configuring test parameters" on page 414, you
can continue your measurement.
Procedure
1
Press the MEASURE SETUP hot key.
2
Press the System Config soft key, and then do the following:
a
Press the Bandwidth soft key, and then select the nominal channel bandwidth to be
measured from the following choices:
–
–
–
b
Toggle the Frame Length soft key and select 5 ms or 10 ms.
c
Press the TTG (RTG) soft key to set the transmit/receive transition gap between the last
sample of the downlink burst and the first sample of the subsequent uplink burst.
d
Enter a value by using the numeric keys, and then press the Enter soft key.
e
Press the CP Ratio soft key, and then select the cyclic prefix ratio option: 1/4, 1/8, 1/16, or
1/32.
f
Press the DL Symbols soft key to set the number of downlink symbols.
g
Enter a value by using the numeric keys, and then press the Enter soft key.
442
7 MHz (8/7): Sets the channel bandwidth to 7 MHz with sampling factor 8/7. In
conjunction with nominal channel bandwidth
8.75 MHz (8/7): Sets the channel bandwidth to 8.75 MHz with sampling factor 8/7
10 MHz (28/25): Sets the channel bandwidth to 10 MHz with sampling factor 28/25
JD700B Series User's Guide
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