Radio fiber connection interface communication library based on FPGA and realization method thereof

Abstract

The invention discloses a radio fiber connection interface communication library based on a FPGA and a realization method thereof. The radio fiber connection interface communication library makes the FPGA connect with a universal software-defined radio peripheral through an optical fiber interface. The radio fiber connection interface communication library comprises an external interface and an internal module. Through the external interface, the radio fiber connection interface communication library is connected with a wireless local area network reconfigurable physical layer and the radio peripheral. The internal module comprises a peripheral management module, a packager, a fiber interface module, an unpacking device, and a data transmission module. Through using a high-speed low-delay data transmission method, a dynamic radio frequency parameter configuring method, a flow control method based on speed, and a clock domain conversion method based on FIFO and other methods, the radio fiber connection interface communication library and the method solve connection problems of a software-defined radio development platform based on the FPGA and the radio peripheral, and communication library and the method are characterized by high speed, low delay, easy configuration, and support multi-sampling rate and user defined clock domain.

Description

technical field [0001] The invention belongs to the field of radio, relates to an FPGA (Field Programmable Gate Array) and a general software radio radio frequency front end, and in particular relates to a radio optical fiber connection interface communication library and an implementation method for connecting the FPGA and the general software radio front end through optical fibers. Background technique [0002] Software-defined radio is a wireless communication technology that uses a general-purpose configurable radio frequency front-end. The communication protocol is defined by software rather than hardware connections, which is highly flexible and open. Software radio technology accelerates the iteration of wireless communication systems, shortens the product production cycle, and has been used in various communication systems, such as civil mobile communications and military communications. Existing software radio systems are divided into two components (see figure 1 )...

AI Technical Summary

Problems solved by technology

However, the physical layer delay stipulated in the WiFi 802.11 protocol commonly used in modern civil wireless communications is within 100 microseconds. The current software radio platform cannot meet the requirements of modern wireless communication protocols.

[0007] 2) Does not support dynamic configuration of RF parameters

This is not suitable for many applications that require dynamic configuration of RF parameters, such as cognitive radio

[0008] 3) Does not contain flow control, does not support multiple sampling rate switching

[0009] To sum up, the existing communication library between the software radio platform and the RF front-end cannot support high-speed and low-latency transmission, support flow control at different sampling rates, and support runtime configuration of dynamic RF parameters.

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