Intermittent calibration apparatus

Details Intermittent calibration apparatus Intermittent calibration apparatus

2005-11-29

2005-11-29

Burd, Kevin (Department: 2631)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S137000, C375S144000, C375S149000, C375S213000, C375S224000, C342S174000, C342S165000, C455S115100, C455S115200, C455S226100, C370S251000, C370S247000

Reexamination Certificate

active

06970497

ABSTRACT:
A base station receives a signal resulting from multiplexing a communication signal spread using a signal-specific spreading code and sent by mobile station apparatus and a calibration (CAL) signal spread using a signal-specific spreading code and sent for each unit frame for a predetermined time by a CAL radio signal generator in a same frequency band. An A/D conversion/despreading section and an A/D conversion/despreading section extract the communication signal and CAL signal from the received signal. A calibration processing section carries out calibration processing using the CAL signal in parallel with a communication using the communication signal. An array combining/signal processing section carries out demodulation processing on the communication signal using the calibration processing result.

REFERENCES:
patent: 5546090 (1996-08-01), Roy, III et al.
patent: 5936569 (1999-08-01), Ståhla et al.
patent: 6084545 (2000-07-01), Lier et al.
patent: 6594509 (2003-07-01), Takakusaki et al.
patent: 0713261 (1996-05-01), None
patent: 0881704 (1998-12-01), None
patent: 881704 (1998-12-01), None
patent: 0938204 (1999-08-01), None
patent: 62001303 (1987-01-01), None
patent: 09138270 (1997-05-01), None
patent: 10336149 (1998-12-01), None
patent: 11046180 (1999-02-01), None
patent: 11068443 (1999-03-01), None
patent: 2000151255 (2000-05-01), None
patent: 2000295152 (2000-10-01), None
patent: 2001053527 (2001-02-01), None
Supplementary European Search Report dated Mar. 7, 2003.
International Search Report dated Mar. 27, 2001.

Affiliated with

Also associated with

Rating

Intermittent calibration apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intermittent calibration apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intermittent calibration apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3500935