Receiver for receiving a spectrum dispersion signal

Details Receiver for receiving a spectrum dispersion signal Receiver for receiving a spectrum dispersion signal

2007-09-18

2008-11-04

Ha, Dac V (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S354000, C455S343200, C455S574000, C370S311000, C370S503000, C713S324000

Reexamination Certificate

active

07447256

ABSTRACT:
A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces OV(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.

REFERENCES:
patent: 5566213 (1996-10-01), Carsello
patent: 5642377 (1997-06-01), Chung et al.
patent: 5708658 (1998-01-01), Sugita
patent: 5737323 (1998-04-01), Lansdowne
patent: 5781543 (1998-07-01), Ault et al.
patent: 5842141 (1998-11-01), Vaihoja et al.
patent: 5943613 (1999-08-01), Wendelrup et al.
patent: 5950131 (1999-09-01), Vilmur
patent: 5974038 (1999-10-01), Shou et al.
patent: 5987339 (1999-11-01), Asano
patent: 6016312 (2000-01-01), Storm et al.
patent: 6058289 (2000-05-01), Gardner et al.
patent: 6073035 (2000-06-01), Witter
patent: 6088602 (2000-07-01), Banister
patent: 6144649 (2000-11-01), Storm et al.
patent: 6212398 (2001-04-01), Roberts et al.
patent: 6363101 (2002-03-01), Sudo
patent: 6480476 (2002-11-01), Willars
patent: 7035309 (2006-04-01), Sudo et al.
patent: 08-51593 (1998-07-01), None
patent: 5-191375 (1993-07-01), None
patent: 08-251656 (1996-09-01), None
patent: 8-321804 (1996-12-01), None
patent: 9-233020 (1997-09-01), None
patent: 9-321667 (1997-12-01), None
patent: 10-190568 (1998-07-01), None
patent: 10-200507 (1998-07-01), None
S. Chang, “A New Serial Search Acquisition Approach with Automatic Decision Threshold Control”, IEEE 45th, Vehicular Technology Conference, vol. 2, Jul. 25-28, 1995, pp. 530-536.
Y. H. You, et al., “Parallel Code Acquisition Technique for Preamble Search in the CDMA Reverse Link”, Electronics Letters, Jun. 20, 1996, vol. 32, No. 13, pp. 1169-1170.

Affiliated with

Also associated with

Rating

Receiver for receiving a spectrum dispersion signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Receiver for receiving a spectrum dispersion signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Receiver for receiving a spectrum dispersion signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4032835