Frequency hopping communication transmitting system and method

Abstract

The invention provides a frequency hopping communication transmitting system and method. The systm is mainly composed of an FPGA internal processing module and a system peripheral circuit, whewrein the FPGA internal processing module comprises a frequency hopping frequency loading control module, and a digital signal modulation processing module; and the peripheral circuit comprises a quadrature modulation circuit and a radio frequency local oscillator generating circuit. With the combination of hardware and software, the system can flexibly configure the working frequency and bandwidth. The frequency hopping communication transmitting system has the characteristics of high jump speed, high bandwidth and high frequency band. The frequency hopping communication transmitting system not onlyhas high frequency bandwidth and high hop rate, the concision and the economical benefit of the circuit design of the system are also considered, and good technical results and economic benefits are obtained.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular, the present invention relates to a frequency hopping communication transmitting system and method. Background technique [0002] The so-called frequency-hopping technology (Frequency-Hopping Spread Spectrum), refers to a pseudo-random code sequence for frequency shift keying, so that the carrier frequency is constantly hopping to spread the spectrum of a communication technology. The working principle of frequency hopping communication refers to the communication method in which the carrier frequency of the transmission signal transmitted by both parties changes discretely according to a predetermined rule, that is, the carrier frequency used in communication is controlled by a pseudo-random change code and randomly hops. The frequency hopping communication system generally enhances the anti-interference performance of the system by increasing the number of operating ...

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Problems solved by technology

[0003] However, on the one hand, because the chip used by the frequency hopping frequency synthesis is limited by the device level, the highest reference frequency is 3500MHz, and the highest operating frequency can only reach 1.4GHz, so it is difficult to work at a higher frequency, and it is generally used below the L-band , it is difficult to achieve custom higher frequency signals

[0004] On the other hand, among the many frequency synthesis design schemes, most of them involve the C / S band or even the higher Ku band, which also generally has the characteristics of fixed frequency and the use of phase-locked loop after DDS, so it is not suitable to apply frequency synthesis to high-speed Performance of frequency hopping systems

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