Abstract: Disclosed are a method for communication, an electronic device, and a computer-readable storage medium. The method includes: determining a first target frequency based on historical sensed information of a destination node; transmitting an RTS frame to the destination node at the first target frequency, where the destination node obtains first sensed information of the source node from the RTS frame, and determines a first optimal receiving frequency of the source node based on the first sensed information; receiving a CTS frame transmitted by the destination node at the first optimal receiving frequency; obtaining second sensed information of the destination node from the CTS frame; determining a second optimal receiving frequency of the destination node based on the second sensed information; transmitting a data frame to the destination node at the second optimal receiving frequency; and receiving an ACK frame transmitted by the destination node at the first optimal receiving frequency.

Abstract: An anti-interference signal detection and synchronization method for a wireless broadband communication system. The method uses the peak value of a cross-correlation value of a received signal and a local sequence as a basis for determining signal detection and system synchronization. Because the cross-correlation value of the received signal and the local sequence is less affected by a signal-to-noise ratio and interference signals, the method can adapt to signal changes, can effectively alleviate the frame loss problem of a received signal autocorrelation based scheme under a low signal-to-noise ratio and interference condition, and also has good anti-noise and anti-interference capabilities.

Abstract: An anti-interference signal detection and synchronization method for a wireless broadband communication system. The method uses the peak value of a cross-correlation value of a received signal and a local sequence as a basis for determining signal detection and system synchronization. Because the cross-correlation value of the received signal and the local sequence is less affected by a signal-to-noise ratio and interference signals, the method can adapt to signal changes, can effectively alleviate the frame loss problem of a received signal autocorrelation based scheme under a low signal-to-noise ratio and interference condition, and also has good anti-noise and anti-interference capabilities.

Abstract: There are provided a signal-to-noise ratio determining method and device for a receiving end of an information transmission system, and a channel equalization method and device based on a minimum mean square error (MMSE) equalizer. The signal-to-noise ratio determining method and device are based on an information transmission system in which timing synchronization is achieved by using a structure of a repetitive training sequence. The signal-to-noise ratio determining method includes: acquiring a peak and a valley of an autocorrelation function, where the peak represents a sum of a signal average power and a noise average power, and the valley represents the noise average power; and determining a signal-to-noise ratio based on the peak and the valley.

Abstract: There are provided a signal-to-noise ratio determining method and device for a receiving end of an information transmission system, and a channel equalization method and device based on a minimum mean square error (MMSE) equalizer. The signal-to-noise ratio determining method and device are based on an information transmission system in which timing synchronization is achieved by using a structure of a repetitive training sequence. The signal-to-noise ratio determining method includes: acquiring a peak and a valley of an autocorrelation function, where the peak represents a sum of a signal average power and a noise average power, and the valley represents the noise average power; and determining a signal-to-noise ratio based on the peak and the valley.