Pilot assisted direct sequence spread spectrum synchronization a

Details Pilot assisted direct sequence spread spectrum synchronization a Pilot assisted direct sequence spread spectrum synchronization a

1997-04-17

1999-07-06

Hsu, Alpus H.

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

370350, 370516, 375206, 375209, 375371, H04B 1707, H04B 7216, H04J 1304

Patent

active

059205555

ABSTRACT:
The invention relates to pilot assisted direct sequence spread spectrum links. Fine code synchronization generally requires either multiple receiver correlators (early/prompt/late) or jittered receiver correlators. The present invention removes the need for either by jittering the pilot code at the source so that the receiver only needs to examine a single code phase and can generate a fine code phase steering signal from the difference between the pilot energy measured when transmitted early and measured when transmitted late.

REFERENCES:
patent: 4385401 (1983-05-01), Jagnow et al.
patent: 5077754 (1991-12-01), Namioka
patent: 5289499 (1994-02-01), Weerackody
patent: 5309474 (1994-05-01), Gilhousen et al.
patent: 5414728 (1995-05-01), Zehavi
patent: 5418814 (1995-05-01), Hulbert
patent: 5440597 (1995-08-01), Chung et al.

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