Co-spectrum transmission modulation and demodulation device for scatter communication

Abstract

The invention discloses a co-spectrum transmission modulation and demodulation device for scatter communication and relates to co-spectrum transmission modulation and demodulation devices in the field of scatter communications, wherein according to the co-spectrum transmission modulation and demodulation devices, spectrum resources and transmitting power are limited, and the demodulation threshold is low. The co-spectrum transmission modulation and demodulation device is composed of an auxiliary multiplexing/de-multiplexing device, a co-spectrum transmission modulator, a D/A converter, a local-oscillation module, an IQ modulator, a band-pass filter, an amplifier, a co-spectrum receiving low-threshold demodulator, an A/D converter, an intermediate-frequency amplifier and other components. By the adoption of the co-spectrum transmission technology on the basis of merging time domain diversity and self-adapting co-spectrum receiving, the spectrum resources occupied by a high-capacity scatter communication system are greatly reduced, and meanwhile high-quality service transmission can be achieved. The co-spectrum transmission modulation and demodulation device for the scatter communication has high-efficiency forward error correction coding and decoding functions, can guarantee the low receiving threshold of equipment and is especially applicable to high-quality and high-throughput service transmission on a beyond-visual-range radio communication link under the condition that the spectrum resources and power are limited.

Description

technical field [0001] The invention relates to a co-spectrum transmission modulation and demodulation device for scattering communication in the field of communication, especially suitable for high-quality, high-throughput transmission services on over-the-horizon wireless fading links under the conditions of limited spectrum resources and limited power information device. Background technique [0002] In traditional scatter communication systems, diversity reception technology is usually used to overcome channel fading, and frequency isolation is used for each transmission and reception channel to obtain a good diversity effect. For large-capacity scatter communication, because it occupies a wide spectrum resource, coupled with the frequency isolation between diversity channels, it greatly occupies spectrum resources, which limits the application of large-capacity scatter communication, especially networking applications. Contents of the invention [0003] The purpose o...

AI Technical Summary

Problems solved by technology

For large-capacity scatter communication, because it occupies a wide spectrum resource, coupled with the frequency isolation between diversity channels, it greatly occupies spectrum resources, thus limiting the application of large-capacity scatter communication, especially networking applications

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