FPGA (Field Programmable Gate Array)-based multimode demodulating system

Abstract

The invention discloses an FPGA (Field Programmable Gate Array)-based multimode demodulating system, belongs to the technical field of communication, and aims to solve the problems of waste of hardware resources and low universality in an existing hardware platform based on software radio. The FPGA-based multimode demodulating system comprises a DPSK / DQPSK (Differential Phase Shift Keying / Differential Quadrature Phase Shift Keying) demodulating module, an FSK (Frequency Shift Keying) demodulating module and a dynamic switching module which are implemented on the basis of an FPGA; the DPSK / DQPSK demodulating module is based on the FPGA, and used for realizing DPSK demodulation and DQPSK demodulation; the FSK demodulating method is based on the FPGA, and used for realizing FSK demodulation; the dynamic switching module is used for realizing switching among the DPSK demodulation, the DQPSK demodulation and the FSK demodulation through the FPGA; and the FPGA is an FPGA obtained after reconstruction of a dynamic part of the FPGA through a Microblaze soft-core processor. The FPGA-based multimode demodulating system is applied to demodulation in a communication receiver.

Description

technical field [0001] The invention relates to a demodulation system, in particular to an FPGA-based multi-mode demodulation system, which belongs to the technical field of communication. Background technique [0002] With the continuous development of communication technology, more and more communication protocols for different communication environments have been applied to adapt to communication systems under various conditions. The traditional communication receiver has a single mode and a fixed structure. However, at present, there is no communication protocol that can be applied to all occasions. When the environment changes, a certain communication protocol may no longer be the best choice. The defect of the traditional communication receiver is revealed, that is, it cannot adapt to different communication occasions, and the multi-system communication systems cannot be effectively and smoothly interconnected. Therefore, for the future communication receiving syste...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of wasting hardware resources and poor versatility in existing software-based radio hardware platforms. The present invention provides a multi-mode demodulation system based on FPGA

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