Spread spectrum communication terminal apparatus in CDMA cellula

Details Spread spectrum communication terminal apparatus in CDMA cellula Spread spectrum communication terminal apparatus in CDMA cellula

1995-09-26

1997-12-16

Bocure, Tesfaldet

Pulse or digital communications

Repeaters

Testing

375347, 375355, 455137, H04K 100, H04L 102

Patent

active

056993803

ABSTRACT:
A number of demodulators receive a signal transmitted from a certain base station and propagated via different respective propagation paths. Each demodulator generates a demodulated signal by examining the correlation between the received signal and a pseudo-noise (PN) spread code. A system time managing counter has a count value that is initialized at the timing of the forefront of the spread code in the modulator when at least one of the demodulators starts the demodulating process after power-on or after a reset operation. A signal combiner combines the demodulated signals that are adjusted to coincide in timing with each other from the demodulators at a timing determined by a system time managing counter after initialization and provides a combined demodulated signal. A control circuit reads the information of the time offset of the PN code to the system time from the sync channel message on a sync channel in the synthetic demodulated signal, so that the system time of the base station is set to the system time managing counter.

REFERENCES:
patent: 3964065 (1976-06-01), Roberts
patent: 5265119 (1993-11-01), Gilhousen et al.
patent: 5285482 (1994-02-01), Sehier et al.
patent: 5361276 (1994-11-01), Subramanian
patent: 5383220 (1995-01-01), Murai
patent: 5388126 (1995-02-01), Rypinski et al.
patent: 5488638 (1996-01-01), Kazecki et al.
patent: 5511067 (1996-04-01), Miller
patent: 5546429 (1996-08-01), Chiasson et al.
patent: 5550872 (1996-08-01), Liberti, Jr. et al.
patent: 5577022 (1996-11-01), Padovani et al.

Affiliated with

Also associated with

Rating

Spread spectrum communication terminal apparatus in CDMA cellula does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spread spectrum communication terminal apparatus in CDMA cellula, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spread spectrum communication terminal apparatus in CDMA cellula will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-214295