Path timing detection method, path timing detection...

Details Path timing detection method, path timing detection... Path timing detection method, path timing detection...

2007-05-08

2007-05-08

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S148000, C375S346000, C375S348000

Reexamination Certificate

active

10440153

ABSTRACT:
To provide a path timing detection method for an adaptive array antenna system realizing improved path timing detection characteristics and high-quality demodulation results by simple processing. A sliding correlator despreads signals from antennas over a plurality of chip timings. A multibeam former forms a plurality of directional beams from outputs of the sliding correlator. A per-beam delay profile generation means generates a delay profile averaged in a certain cycle with respect to each beam by using the signal sequences of the beams from the multibeam former. A path timing detection means detects path timings one after another from the generated delay profiles with respect to the respective beams by using a minimum selection timing interval centered on a chip timing already selected as a path timing and a minimum selection beam interval centered on the beam having the chip timing already selected.

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