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Communication system based on short-wave narrow-band waveform

A communication system and waveform technology, applied in the direction of link quality-based transmission modification, transmission system, digital transmission system, etc., can solve problems such as unreliable data transmission performance, reduced short-wave passable range, and low signal transmission quality

Active Publication Date: 2018-06-05
西安烽火电子科技有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In actual use, the existing short-wave waveform technology is greatly affected by environmental factors such as frequency, latitude, weather, day and night, resulting in poor signal transmission quality, and even affecting the normal reception of signals, reducing the short-wave passable range, especially After the distance is extended, the problem of unreliable data transmission performance begins to emerge between 1:00 and 3:00 in the morning, which seriously restricts the development requirements of short-wave communication distance

Method used

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  • Communication system based on short-wave narrow-band waveform
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  • Communication system based on short-wave narrow-band waveform

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] An embodiment of the present invention provides a communication system based on a short-wave narrowband waveform, and the communication system at least includes: a transmitter and a receiver.

[0037] The transmitter is provided with a sequentially connected transmission data processing unit, a transmission shaping filter and a channel unit; wherein, the filtering bandwidth of the transmission shaping filter is in the range of 1 kHz to 1.5 kHz;

[0038]...

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Abstract

The invention belongs to the technical field of the short-wave communication, and discloses a communication system based on short-wave narrow-band waveform. A short-wave communication signal design method with narrower bandwidth is adopted, the out-of-band noise influence is lowered by reducing the signal transmission bandwidth, the unit Hertz power spectrum density is improved, and the short-wavecommunication data transmission performance is improved; the system can be directly applied to the existing short-wave communication equipment, has the advantages of being strong anti-interference capacity, stable and reliable, and strong in adaptability, and the existing short-wave communication equipment performance can be further improved.

Description

technical field [0001] The invention belongs to the technical field of short-wave communication, in particular to a communication system based on short-wave narrowband waveforms. Background technique [0002] Short-wave communication mainly relies on ionospheric emission for communication. The ionospheric channel is a time-varying dispersion channel, which is characterized by path loss, delay spread, noise and interference, etc., which are constantly changing with frequency, location, season, and day and night. Therefore, communication noise and space interference are unavoidable and important problems for receivers. According to the characteristics of short-wave communication, designers and developers have been working on the research of data transmission reliability. However, short-wave signals are greatly affected by factors such as weather and terrain. It is difficult to have a better way to solve this problem from the aspect of anti-noise performance. The transmission ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/00H04B1/04H04B1/30H04B1/7073H04L1/00
CPCH04B1/0028H04B1/0035H04B1/005H04B1/0475H04B1/30H04B1/7073H04B2001/0491H04L1/0006H04L1/0057H04L1/0071
Inventor 杨鹏王小军张健马洪峰田杰尹诗媛仇妙月
Owner 西安烽火电子科技有限责任公司
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