Cooperative communication perception method for macro and micro stations based on non-orthogonal multiple access

Abstract

The invention discloses a non-orthogonal multiple access-based cooperative communication sensing method for macro and micro stations, which is applied to a communication system. The method includes: a communication macro station generates a first signal, and uses the first signal to sense whether there is a preset area. The target, the communication micro station generates a second signal, and transmits the second signal to the communication macro station, the first user terminal and the second user terminal in a power multiplexing manner. When the target exists in the preset area, the communication macro station The station receives the fifth signal, and the communication macro station forwards the fifth signal to the first user end and the second user end, so that the first user end determines its own first communication interruption probability according to the third signal and the fifth signal, and makes The second user terminal determines its own second communication interruption probability according to the fourth signal and the fifth signal, and the communication macro station determines its own sensing probability according to the echo signal and the preset sensing threshold, which reduces the spectrum overlap between the radar and the communication. , which is conducive to serving multiple clients in the same time / frequency / code domain.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a non-orthogonal multiple access-based cooperative communication perception method for macro and micro stations. Background technique [0002] With the development of the Internet of Things technology, a large number of mobile communication devices are connected to the network, which directly causes the communication frequency band and the radar frequency band to be close to each other. In order to cope with the shortage of spectrum resources, radar communication integration and joint communication perception are considered as two feasible directions. Generally speaking, the integration of radar communication can be attributed to two aspects: waveform integration and system coexistence integration. However, waveform integration requires an advanced radio frequency system, which increases the burden of hardware design, and the system coexistence scheme w...

AI Technical Summary

Problems solved by technology

In order to satisfy a large number of users accessing the communication system, orthogonal multiple access technology is used in the related art to alleviate the cross-interference between the communication signal and the sensing signal. However, the above method can only serve a single user in the same time / frequency / code domain; In addition, in practical applications, it is difficult for radar to provide auxiliary functions for communication, especially in the military field, and the information interaction between communication and radar may cause illegal communication users to steal information and cause losses

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