An anti-interference transmission method based on double sideband

Abstract

The invention relates to an anti-interference transmission method based on double-sideband, which belongs to the field of anti-interference technology of wireless communication networks. At the sending end, an intermediate frequency carrier signal is selected for primary modulation, and a multiplier is used to obtain a frequency interval of twice during carrier frequency modulation. The upper sideband signal and the lower sideband signal of the IF frequency value realize cross-band redundant transmission; at the receiving end, the upper sideband signal and the lower sideband signal are divided into two independent signals and processed by the upper sideband channel and the lower sideband channel respectively; through comparison The advantages and disadvantages of the bit error rate index of the preprocessed user data information on the upper sideband path and the lower sideband path, select the user baseband data output by the upper sideband path or the lower sideband path that meets the requirements of the bit error rate threshold as the effective output user data of the receiver The information is transmitted to the upper computer of the system; the invention enables the system to obtain redundant transmission capability on the premise of taking into account the advantages of transmission characteristics of high-frequency and low-frequency channels, and effectively solves the problem of transmission reliability.

Description

technical field [0001] The invention relates to an anti-jamming transmission method based on double-sideband, which is suitable for a strong-jamming battlefield communication environment, and belongs to the technical field of anti-jamming of wireless communication networks. Background technique [0002] Networking among high-mobility platforms is the basic condition for realizing autonomous formation operations of high-mobility platforms. Inter-platform networking is mainly subject to the stability and anti-interference ability of wireless communication waveforms. Due to the narrow space and weak self-sustaining ability of the mobile platform, it also puts forward higher requirements for the SWaP of the platform communication system. Therefore, a reasonable design of the wireless channel transmission waveform will provide the strongest possible transmission reliability and active anti-interference ability on the basis of less increase in algorithm processing consumption and...

AI Technical Summary

Problems solved by technology

[0003] The usual wireless channel transmission reliability adopts multiple channel backup methods to achieve transmission guarantee. Considering the problem of anti-interference, the carrier frequency of multiple channels is usually selected across frequency bands, which increases the circuit complexity of the wireless communication device, and the size and power consumption and the weight increases geometrically

As far as enemy interference is concerned, the system works at multiple frequency points and the frequency interval between frequency points is as large as possible. Whether it uses targeted interference or frequency band suppression interference, it will increase the enemy's interference cost.

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