Angular-domain digital wireless communication system and realization method thereof

Abstract

The invention, which belongs to the technical field of wireless communication, puts forward an angular-domain digital wireless communication system and a realization method thereof. With the system and method, a problem of capacity expansion of the existing communication system is solved. At a system transmitting terminal, code element sequences of multi-path to-be-transmitted binary digital signals are mapped to a plurality of corresponding beam emergence angles of an array antenna in a concurrence mode based on a binary angular shift key control technology, so that parallel angular-domain modulation of multi-path binary digital signals is realized. At a system receiving terminal, on the basis of a pseudo-spectrum-estimation-based angular domain demodulation method, spectral peak searching is carried out on a space pseudo spectrum of an incoming wave signal, a positioning wave beam arrives at an angular domain sub zone where an angle is located, and spatial incoming wave signal demodulation is realized by determining the incoming wave signal strength. With the provided system and method, the spatial multiplexing ratio of frequency spectrum resources and the communication system capacity can be improved obviously.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a digital wireless communication system and a realization method based on an angle-domain (Angle-Domain, AD), in particular to a binary digital signal angle-domain modulation and demodulation method. Background technique [0002] With the geometric growth of wireless services, the communication capacity, anti-interference performance and spectrum utilization efficiency of wireless communication systems are facing new challenges. Although the communication capacity of the system can be significantly improved by expanding the bandwidth, due to limited spectrum resources and inherent bandwidth limitations of electronic devices, the capacity space that can be improved is very limited. Therefore, seeking a new wireless communication scheme has become an important research topic in the field of wireless communication. [0003] Modulation and demodulation is an important l...

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Problems solved by technology

Although this method can significantly improve the capacity of the communication system, it needs to "distort" the plane electromagnetic wave into a vortex electromagnetic wave, which will inevitably lead to an increase in the complexity of the system structure, increase in cost, and factors such as atmospheric turbulence in the external environment (cause the amplitude of the signal and

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