Method for obtaining channel response of self-interfering channel and full-duplex signal machine

Abstract

The present invention is applicable to the field of communication technology, and provides a method for obtaining the channel response of the self-interference channel and a full-duplex signal machine. The method includes: firstly using a plurality of reference signals to perform channel estimation on the self-interference channel to obtain The channel response estimate of the interference channel, the time interval between adjacent reference signals is less than the coherence time of the self-interference channel, the frequency domain interval between adjacent reference signals is less than the coherence bandwidth of the self-interference channel, and then determined according to the channel response estimate The stable interval of the frequency domain response of each channel, and then randomly select the frequency point within the stable interval of the frequency domain response of each channel or select the frequency point with a large channel response as the transmission frequency point of the reference signal. After the correlation between the radio frequency point and the non-transmitting frequency point, the channel responses in all time domain and frequency domain directions are obtained according to the received signal corresponding to the reference signal at the transmitting frequency point. The present invention saves reference signal resources for self-interference channel estimation.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a method for obtaining a channel response of a self-interference channel and a full-duplex signal machine. Background technique [0002] In a mobile network of an operator, a base station (Base Station, BS) communicates with multiple user terminals (User Equipment, UE) within a coverage area. The communication between the base station and the user terminal is bidirectional. The process of the base station sending a signal to the user terminal is called downlink communication, and the process of the user terminal sending a signal to the base station is called uplink communication. [0003] The duplex method refers to the multiplexing method between the uplink and the downlink. The current duplex mode is divided into simplex, half-duplex and full-duplex. Simplex means that communication is one-way, the transmitter can only be used to transmit signals, the receiv...

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Problems solved by technology

[0016] The embodiment of the present invention provides a method for obtaining the channel response of the self-interference channel and a full-duplex signal machine, aiming at solving the problem that the existing technology does not use the characteristic that the frequency domain change relationship of the self-interference channel changes slowly with time to perform self-interference channels. The problem of channel estimation increases the time-frequency resources of data transmission

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