An analog-digital hybrid baseband multi-beam forming method and its application in wireless communication systems

Abstract

The invention discloses an analog and digital hybrid baseband multi-beam forming method comprising a transmitting and receiving array in an active antenna unit, which generates two-dimensional independent multi-beams or two-dimensional array beams in space. The structure of the analog-digital hybrid baseband multi-beam wireless communication system using this method is also disclosed, which can be used for space-based interconnection networks including 5G wireless communication and beam-hopping based on satellite communication. The dynamic two-dimensional independent multi-beam or two-dimensional array beam greatly improves the communication capacity. Compared with the all-digital beamforming system, the system has the advantages of low cost and low power consumption, and is easy to implement.

Description

technical field [0001] The present invention relates to the application neighborhood of microwave and millimeter wave phased arrays and MIMO arrays, such as 5G wireless communication, satellite communication, etc., how to form two-dimensional multi-beams at baseband frequencies. Background technique [0002] In order to increase the communication bandwidth, wireless communication tends to use higher carrier frequencies, such as microwave and millimeter wave frequencies, but the carrier frequency leads to an increase in transmission loss. In 5G wireless communication, the communication from the base station / micro base station BS to the user terminal equipment UE uses beamforming to improve the effectiveness and communication distance of communication, and overcome the link loss caused by transmission attenuation. Since the beam is only used, it also brings the possibility of spatial multiplexing, and the communication capacity can be further increased by increasing the beam. ...

AI Technical Summary

Problems solved by technology

Due to the phase shift and amplitude modulation on the radio frequency, the precision of the phase shift and amplitude modulation that can be achieved is not high, and the required power consumption is also large

When receiving, the noise figure and linearity indicators are often deteriorated due to the introduction of phase shift and amplitude modulation functions, and the influence of temperature is also difficult to solve

In addition, the main problem is that it is difficult to achieve multi-beam forming when receiving

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