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Chapter 5 145
CDMA Measurements - Screens and Control Fields
CDMA Measurements
The order selected depends on the data type. A Walsh order of 1 (one),
will result in a channel size of 128. This size excludes all other channel
numbers from the transmission. However, a Walsh order of 2, on any of
the 4 possible Walsh codes at that level (3, 1, 2 or 0)) reserves all the
channels which can be generated from this channel, using the bit
reverse algorithm, on Walsh orders 2 through 7.
This is shown in Figure 5-10, where the channel 1 has been selected
with Walsh order 2. The shaded box indicates all the channels which
will be assigned this code set. The Channel size indicates the number of
Walsh orders implicated in the original Walsh order/Walsh code
selection.
Available Measurements in the Code Domain
The following measurements may be selected from within the Code
Domain screen:
• Power
•Fast Power
• Complex Power
• Power & Noise
• Fast Power Synchronize
Channels are indicated both by the selected number (0-127) as well as
by the Walsh order to which they have been assigned or the channel
size, depending on your selection.
The Code Domain may be viewed either in the Bit Reverse ordering as
shown in Figure 5-11 or using the Hadamard ordering, as shown in
Figure 5-12.
Figure 5-11 Code Domain Power, Bit Reverse Ordering