What is CPRI compression?
To support more carriers or RRUs/RFUs/pRRUs on a CPRI port, the CPRI Compression feature is introduced. This feature compresses the I/Q bit width and lowers the sampling rate to reduce the CPRI bandwidth resources required by the CPRI data transmission.
What is the difference between CPRI and eCPRI?
CPRI is the short form of Common Public Radio Interface. eCPRI is published after CPRI. eCPRI standard defines specification which connects eREC and eRE via fronthaul transport network. It is used for 5G systems, LTE-Advanced and LTE-Advanced Pro.
What is the meaning of CPRI?
Common Public Radio Interface
CPRI (Common Public Radio Interface) is a specification for wireless communication networks that defines the key criteria for interfacing transport, connectivity and control communications between Baseband units (BBUs) and remote radio units (RRUs), which are also called remote radio heads (RRHs).
What is IQ data compression?
Back to top. Compression IP is used to put more data into a given fiber or microwave “link” in wireless systems. Using Compression a higher data rate can be transmitted on lower speed links which are generally cheaper. This is a goal across the industry but few have achieved.
What is IQ in Cpri?
IQ samples are generated by Linear Feedback Shift Registers (LFSR) and are driven into the Compression Modules. After compression the IQ samples are mapped by the IQ Mapper module and are then driven into the CPRI IP. The CPRI module implements the CPRI protocol. It loads the IQ samples unto the CPRI IQ Data Plane.
What is CPRI used for?
The purpose of CPRI is to allow replacement of a copper or coax cable connection between a radio transceiver (used example for mobile-telephone communication and typically located in a tower) and a base station (typically located at the ground nearby), so the connection can be made to a remote and more convenient …
What is CPRI approval?
Set up in 1960 by the Government of India, it functions as a centre for applied research in electrical power engineering assisting the electrical industry in product development and quality assurance. CPRI also serves as an independent authority for testing and certification of power equipment.
What is antenna carrier?
AxC is the short form of Antenna Carrier in CPRI standard. Definition: The CPRI standard defines AxCs (antenna carriers) for transmission and reception of the digital I/Q data. An AxC is a container for one I/Q sample. The size in bits of such an AxC thus depends on the length of one IQ sample, e.g. 16 bits.
What is backhaul used for?
The term backhaul is often used in telecommunications and refers to transmitting a signal from a remote site or network to another site, usually a central one. Backhaul usually implies a high-capacity line, meaning high-speed lines capable of transmitting high bandwidth at very fast speeds.
What is the difference between backhaul and Fronthaul?
A primary difference between fronthaul and backhaul is the part of the network the technology is deployed on. Backhaul links the mobile network to the wired network, while fronthaul describes the network architecture that connects the remote cell sites to the BBU.