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CPRI Line Rates | Rate-1,2,3,4,5,6,7A,7,8,9,10 of CPRI Line

This page covers CPRI line rates. The table covers CPRI line rate-1,2,3,4,5,6,7A,7,8,9 and 10. The transport capacity of WCDMA and LTE AxC are also mentioned.

Introduction:
The CPRI (Common Public Radio Interface) is a popular standard to transport baseband I/Q signals to the radio unit in Base Station. It allows efficient as well as flexible I/Q data interface for various wireless standards such as GSM, WCDMA, LTE etc. It uses one physical connection for user data, management and control signaling and synchronization.

CPRI Line Rate Line Bit
Rate
Line
Coding
Bits per
word
Transport
capacity
(#WCDMA
AxC)
Transport
capacity
(#20 MHz
LTE AxC)
Rate-1 0.6144 Gbps 8B/10B 8 4 -
Rate-2 1.2288 Gbps 8B/10B 16 8 1
Rate-3 2.4576 Gbps 8B/10B 32 16 2
Rate-4 3.0720 Gbps 8B/10B 40 20 2
Rate-5 4.9152 Gbps 8B/10B 64 32 4
Rate-6 6.1440 Gbps 8B/10B 80 40 5
Rate-7A 8.1100 Gbps 64B/66B 128 64 8
Rate-7 9.8304 Gbps 8B/10B 128 64 8
Rate-8 10.1376 Gbps 64B/66B 160 80 10
Rate-9 12.1651 Gbps 64B/66B 192 96 12
Rate-10 24.3302 Gbps 64B/66B 384 192 24

CPRI transports I/Q data of particular antenna and particular carrier. This "unit" is called an AxC unit or Antenna-Carrier unit.
Example:
In LTE system, if I=16 bits and Q=16 bits
then one AxC is of length 32 bits.


CPRI Related Links

Remote Radio Head   CPRI protocol stack  CPRI frame structure  CPRI versus eCPRI 

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