METHOD AND FULL-DUPLEX COMMUNICATION DEVICE FOR ACQUIRING CHANNEL RESPONSE OF SELF-INTERFERING CHANNEL

摘要

Provided are a method and apparatus for acquiring channel responses of a self-interference channel and a full-duplex communication device. The method comprises: obtaining an estimate value of a channel response of the self-interfering channel by employing multiple reference signals to perform a channel estimation on the self-interfering channel; determining a stable range of each channel frequency-domain response on the basis of the channel response estimated value; randomly selecting a frequency point within the stable range of each channel frequency-domain response or selecting a frequency point of a greater channel response to serve as an emission frequency point of the reference signals, and, when an interrelation of the channel responses on the emission frequency point and on a non-emission frequency point is acquired, acquiring all the channel responses on time-domain and frequency-domain on the basis of a reception signal corresponding to the reference signals on the emission frequency point.

主权项

1. A method for acquiring channel responses of a self-interference channel, comprising:
obtaining an estimate value of a channel response of the self-interfering channel by performing channel estimation for the self-interference channel through using a plurality of reference signals, wherein a time interval between adjacent reference signals is less than a coherence time of the self-interference channel, and a frequency-domain interval between adjacent reference signals is less than a coherence bandwidth of the self-interfering channel; determining an interval with stable frequency domain response of the self-interference channel according to the estimate value of the channel response of the self-interference channel; selecting, from the interval with stable frequency domain response of the self-interference channel, a random frequency point or a frequency point with a relatively significant channel response as a transmission frequency point for a reference signal; acquiring an interrelation between channel responses at a transmission frequency point and at a non-transmission frequency point; transmitting the reference signal at the transmission frequency point; calculating a channel response Ĥr at the transmission frequency point according to a received signal Yr at the transmission frequency point; calculating a channel response Hi at the non-transmission frequency point according to the channel response Ĥr at the transmission frequency point and the interrelation between channel responses at the transmission frequency point and at the non-transmission frequency point; and estimating channel responses in all time domain and frequency domain by performing interpolation separately or simultaneously in frequency domain and time domain.