The invention designs an analog-digital
hybrid multiple
access method based on time scanning-time
delay cross-correlation, and belongs to the field of
wireless communication. The method comprises the following steps: deeply analyzing a bottom layer principle related to sliding, carrying out band-pass filtering (BPF)
processing on a transmitting
signal received by a receiving end, and generating a local generation
signal by utilizing a multi-frequency
signal formed by a limited number of cosine functions; the filtered receiving signal is multiplied by a local generation signal to realize
bandwidth compression; the frequency of the multi-frequency signal is of a series of equal-amplitude Dirac comb-shaped structures, and the
frequency spectrum interval is slightly smaller than the
frequency spectrum interval of the sending signal; and performing low-pass filtering on the multi-frequency signal after
bandwidth compression through a low-pass filter, removing distorted interference information, sampling the filtered signal, and obtaining a detection pulse and a sequence after matched filtering in a digital domain through digital-to-analog conversion. According to the scheme, the characteristic of
bandwidth compression is reserved, and meanwhile the number of
hardware circuits is minimized, so that low-cost and high-precision multi-link CIR
estimation in an MISO scene is achieved.