Channel simulator based on FPGA (Field Programmable Gate Array) and simulation method thereof

Abstract

The invention discloses a channel simulator based on a FPGA (Field Programmable Gate Array) and a simulation method thereof. The channel simulator comprises a host, a baseband and intermediate-frequency subsystem, a radio frequency subsystem, a clock and trigger subsystem and a power management subsystem, wherein the host is connected with the baseband and intermediate-frequency subsystem, the radio frequency subsystem and the clock and trigger subsystem through different Ethernet interfaces respectively; the clock and trigger subsystem is also connected with the baseband and intermediate-frequency subsystem and the radio frequency subsystem; the baseband and intermediate-frequency subsystem is connected with the radio frequency subsystem; and the host, the baseband and intermediate-frequency subsystem, the radio frequency subsystem and the clock and trigger subsystem are all connected with the power management subsystem. The invention also relates to a simulation method of a channel simulator based on the FPGA. Four FPGAs are interconnected through an Aurora bus at a high speed, and each FPGA can provide input and output interfaces of two channels, so that channel simulation of eight transmitters and eight receivers can be realized to the maximum extent, and the maximum simulation demand of an existing MIMO (Multiple Input Multiple Output) system can be met.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to an FPGA-based channel simulator and a simulation method thereof. Background technique [0002] In order to verify the performance of communication equipment, it is usually necessary to test the communication equipment in a channel environment close to the actual transmission characteristics. The commonly used methods are field test method and tester method. Although the field test method has high reliability of the test results, it requires a lot of manpower and material resources, and the cost is high; the channel simulator used in the tester method can realize the simulation of the channel environment and facilitate the testing of equipment performance, but it is expensive and technically The monopoly is in the hands of several well-known foreign instrument companies. At present, there is no domestic production company of channel simulators with independent pro...

AI Technical Summary

Problems solved by technology

In the existing papers, most of the channel simulators designed by scholars have a simple structure, and most of them are designed based on an FPGA board or a DSP chip, which often cannot meet the consumption of hardware resources required by the simulated channel scene.

Moreover, many scholars design corresponding channel simulators according to the specific channel they want to simulate, so they can only simulate a specific channel scenario, but cannot meet all the channel simulation requirements of the existing 4G communication system (such as: LTE system The MIMO communication system that can provide up to 8 transmissions and 8 receptions)

Images