Patent ID: 7933366

Claim:
A channel estimation method comprising the following steps: (a) calculating a linear correlation between a baseband sampled complex signal and a locally stored pseudo-noise PN signal and generating a first correlation sequence; (b) iteratively removing inter-path interference from the first correlation sequence, obtaining a second correlation sequence by removing the inter-path interference from the first correlation sequence, and generating a first channel impulse response (CIR) sequence based on the second correlation sequence; (c) generating a feedback signal based on the first CIR sequence, the baseband sampled complex signal, and a symbol synchronization signal generated based on the first correlation sequence; and (d) removing random-data interference from the second correlation sequence based on the first CIR sequence and the feedback signal, obtaining a third correlation sequence by removing random-data interference from the second correlation sequence, and generating a second CIR sequence based on the third correlation sequence.