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Protocol Settings
R&S
®
EX-IQ-BOX
186
User Manual 1409.5570.32 ─ 05
7.2.9.2
AxC Container Definition
The
AxC Container Definition
section graphically displays the CPRI basic frame and
indicates the I/Q and AxC data rates. The table in the lower part contains the used AxCs
with their assigned signals, and basic signal parameters such as word address, bit
address and word size. LEDs in the last column indicate emerging conflicts between
AxCs.
CPRI Basic Frame Graph
The basic frame graph indicates the 16 words of a CPRI basic frame in a control matrix.
First the control word is shown, then the remaining words follow, carrying the I/Q data.
The data words are structured in AxCs (antenna carriers). A signal needs one or more
AxCs for carrying the I/Q data, depending on the sample rate.
The word length depends on the CPRI line bit rate parameter. This parameter defines
the number of bits transferred per second over the CPRI communication link, including
control and I/Q data.
The following table shows the word length related to the bit rate.
Table 7-10: CPRI Line bit rate vs. Word length
Line bit rate [Mbit/s]
Word length [bits]
[Bytes]
1x (614.4)
8
1
2x (1228.8)
16
2
4x (2457.6)
32
4
5x (3072.0)
40
5
CPRI
Содержание EX-IQ-BOX
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