Patent ID: 8824525

Claim:
A multipath searching method, comprising: performing processing on received signals r i (t) and pilot sequences p i (t) to obtain upsampling signals y(τ); subtracting contribution values of a current multipath waveform to other multipath waveforms by using a raised cosine function with a peak position set to zero and according to a global maximum value of |y(τ)| 2 and a total of M sampling points {circumflex over (τ)} 1 (m) near the global maximum value, to obtain an upsampling signal y L (τ) having a minimum residual in M groups of upsampling signals y L (m) (τ), wherein M is an integer greater than or equal to 1, and |y(τ)| 2 is a squared absolute value of y(τ); and obtaining a time delay power spectrum of the upsampling signal y L (τ) having the minimum residual.