Wireless receiving parameter determination method, dual-mode communication method and system

The invention relates to the field of communication, and discloses a wireless receiving parameter determination method, a dual-mode communication method and a dual-mode communication system. The determination method comprises the following steps: sending a leader sequence by an HPLC channel in a specific frequency band; a plurality of data sets are received by an HRF path in a zero intermediate frequency mode, the received data sets are converted to obtain a plurality of frequency domain data sets, in the zero intermediate frequency mode, the cut-off frequency of an adopted low-pass filter is the starting frequency of the specific frequency band, and the cut-off frequency of an adopted low-pass filter is the starting frequency of the specific frequency band; the data group comprises an interference signal of a sending process of the preamble sequence to a receiving process of the data group; and according to the cut-off frequency, the plurality of frequency domain data groups and the intermediate frequency ba