Frequency hopping communication transmitting system and method

A technology of frequency hopping communication and transmission system, applied in the field of communication, can solve the problems of difficult to customize signals, lack of performance, difficult working frequency, etc., and achieve the effects of high hopping speed, enhanced anti-interference performance, and high bandwidth

Inactive Publication Date: 2018-01-26
南十(北京)科技有限公司
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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

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  • Frequency hopping communication transmitting system and method
  • Frequency hopping communication transmitting system and method
  • Frequency hopping communication transmitting system and method

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[0039] Frequency hopping in the GSM system is divided into baseband frequency hopping (BBH) and radio frequency hopping (SFH). The principle of radio frequency hopping is that the voice signal is fixedly transmitted on a transmitter, but the transmitter's transmitting frequency is constantly changing, and the specific change process is controlled by the frequency hopping sequence. Compared with baseband frequency hopping, radio frequency hopping has higher performance and ability to resist co-frequency interference. Current GSM actual networks generally use radio frequency hopping. From the perspective of technical realization, the realization of frequency hopping in GSM is divided into baseband frequency hopping and radio frequency hopping.

[0040] The inventor found that if the frequency hopping synthesis adopts the form of directly using DDS chips, it is often limited by the performance level of the device. The highest reference frequency is 3500MHz, and the highest operating...

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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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Application Information

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IPC IPC(8): H04B1/713H04B1/715H04B1/04H04B1/50
Inventor 王峰崔一凡
Owner 南十(北京)科技有限公司
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