Transform domain communication method for channel dynamic screening and state interaction sharing

The invention discloses a transform domain communication method for channel dynamic screening and state interactive sharing, which comprises the following steps that: a receiver finishes segmented spectrum sensing by using an AD9361 chip receiving channel, and performs frequency band rough selection and fine selection; the receiving end and the transmitting end share a channel state through a direct spread spectrum interaction link by using an AD9361 chip receiving and transmitting channel; and the transceiver respectively configures the AD9361 chip transceiving channel according to the shared channel, and carries out transform domain communication processing to obtain final communication data. According to the method, spectrum sensing, a direct spread spectrum interaction sharing link and transform domain processing are powerfully combined, and when the electromagnetic channel states of the receiving end and the transmitting end are inconsistent, the channel state of the receiving end can still be shared thr