PCB FABRICATION Several steps are required to build a communication prototype system

The 4G/5G protocol processing platform has the protocol processing capabilities of 4G base station (eNB), 5G base station (gNB), 4G core network (EPC), and 5G core network (5GC). Independent networking mode, supports commercial 4G/5G terminal access, supports FDD and TDD, base station bandwidth supports 20/40/50/60/80/100MHz multiple modes, data subcarrier spacing supports 15kHz, 30kHz, 120kHz, protocol processing The unit is up to 18-core 4.6GHz.

The 4G/5G protocol processing platform has 4G/5G base station simulation and 4G/5G terminal simulation functions, provides a graphical operation configuration interface, can be operated remotely, and provides L1, L2, L3 layer protocol interface functions and development documents of the 4G/5G protocol stack . Take 5G prototype system as an example

The programmable 5G base station complies with the 5GNR base station standard, provides development documents, supports 1MHz to 8GHz frequency band, and 400MHz signal bandwidth. The frequency error of the base station is less than 5ppb, the EVM is less than -42dB, and the FPGA memory of the data processing unit is up to 8GB. The base station provides Gigabit Ethernet, USBType-C, 100GbEQSFP28, PCIeGen3x8 communication interfaces, provides 10MHz reference clock input and output and GPS synchronization interface, and provides FPGAJTAG debugging interface.

The programmable 5G base station supports the 3.5GHz (N78) frequency band, and the RF front-end has spectrum sensing and testing capabilities, which can realize real-time drawing and recording and playback of the spectrum. The base station has a terminal control window in command line mode and supports one-click quick start. The base station supports access to 5G commercial terminals and mobile phones. Users can customize the name of the network operator and test the downlink communication rate between the base station and 5G commercial terminals or mobile phones PCB FABRICATION.

This solution provides 5G-specific antennas and power amplifiers, supports the 3.5GHz (N78) frequency band, and transmits power up to +23dBm. It cooperates with the base station to provide network coverage. The antennas and power amplifiers adopt a modular design, and users can freely replace them. At the same time, it provides parameter configuration and management functions of 4G/5G base stations, such as cell user configuration, terminal configuration and other operations, and can perform card writing operations on SIM cards of 4G/5G commercial terminals and mobile phones.

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