Spread spectrum receiver using absolute-value determination for

Details Spread spectrum receiver using absolute-value determination for Spread spectrum receiver using absolute-value determination for

1995-08-15

1998-11-03

Vo, Don N.

Pulse or digital communications

Repeaters

Testing

375367, 375208, H04B 169

Patent

active

058320237

ABSTRACT:
A receiver comprising a digital code tracking loop which receives an input of real and imaginary components of a received signal and in which these components are processed in different branches which each comprise a multiplier (12a-12d) and a filter (13a-13d) connected in series. To improve the characteristics of the code tracking loop in the receiver, each branch of the code tracking loop further comprises circuitry (33a-33d) for absolute-valuing the signal, the circuitry (33a-33d) being connected in series after the filters (13a-13d).

REFERENCES:
patent: 4726014 (1988-02-01), Goldman et al.
patent: 4841544 (1989-06-01), Nuytkens
patent: 5128957 (1992-07-01), Nakagawa
patent: 5222099 (1993-06-01), Hori et al.
patent: 5551057 (1996-08-01), Mitra
patent: 5583884 (1996-12-01), Maruyama et al.
patent: 5589795 (1996-12-01), Latva-Aho

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