A communication method combining two-way frequency hopping and probabilistic simultaneous same-frequency full-duplex

Abstract

The invention discloses a two-way frequency hopping and probability simultaneous co-frequency full-duplex combined communication method, which solves the problems of low frequency spectrum utilizationrate and not high co-frequency full-duplex interference resistance in a frequency hopping system in the prior art. The method comprises the following specific steps: firstly, a terminal node adopts aquadrature phase shift keying QPSK method to modulate a signal; secondly, two-time fast and slow frequency hopping is carried out on the modulated signal; thirdly, the probability of simultaneous co-frequency full-duplex transmission is calculated by a terminal node; finally, self-interference elimination is carried out on the signal needing to be subjected to self-interference elimination by theterminal node, and then, de-hopping and demodulation are carried out to obtain a transmitted signal. The method in the invention is applicable to mutual communication of transmitting and receiving signals at the same time and at the same frequency, and the frequency utilization rate and the anti-interference performance of a cooperative communication system are improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a communication method in the technical field of wireless communication, which combines two-way frequency hopping and probabilistic simultaneous same-frequency full-duplex. The present invention can be used in the cooperative transmission system of the wireless mobile communication to carry out mutual communication of transmitting and receiving signals at the same time and the same frequency between stations. Background technique [0002] As the bandwidth in frequency hopping wireless communication becomes wider and wider, but the actual corresponding available spectrum resources are less and less, people begin to study methods to maximize the use of spectrum resources. Full-duplex technology transmits and receives signals at the same time and in the same frequency band, so it can maximize the utilization of spectrum resources in future wireless communication networks...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the analysis conditions are limited to the simultaneous same-frequency full-duplex system with a fixed center frequency, and cannot be applied to complex environments with variable center frequencies.

The disadvantage of this method is that this method is suitable for the traditional time division duplex mode. When transmitting and receiving signals at the same time and on the same frequency, it is no longer applicable because the bit error rate is too high. The entire frequency hopping communication The spectrum utilization of the system is not fully utilized

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