Code acquisition and tracking circuit using switched matched fil

Details Code acquisition and tracking circuit using switched matched fil Code acquisition and tracking circuit using switched matched fil

1996-07-30

1998-07-14

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375208, 375343, 455343, H04B 1707

Patent

active

057815844

ABSTRACT:
A filter circuit largely reducing electric power consumption compared with a conventional one, as well as realizing the initial acquisition in high enough speed. In a filter circuit according to the present invention, a matched filter and a sliding correlator are used in parallel; the first acquisition and holding is executed by a matched filter, a correlating operation is executed by a sliding correlator and a voltage supply to the matched filter is stopped.

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patent: 5638362 (1997-06-01), Dohi et al.
Simon et al., Spread Spectrum Communications Handbook, McGraw-Hill, Inc., 1994, p766 and P818.
Dixon, Robert, Spread Spectrum System with Commercial Applications, Third Edition, John Wiley & Sons, Inc., 1994, p237 and p259.
Yokoyama, Mitsuo, Spread Spectrum Communications System, Kagaku Gijutu Shuppansha, 1988, p301 (Title translated by applicant).

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