公开(公告)号：JP2000151733A

公开(公告)日：2000-05-30

申请号：JP30788599

申请日：1999-10-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JOHNSON ROBERT E ,  VELLA-COLEIRO GEORGE P

IPC: H04L27/227 ,  H04L27/22 ,  H04L27/233

Abstract: PROBLEM TO BE SOLVED: To provide a phase shift keying(PSK) modulator and a modulation method which use a period width window technique. SOLUTION: This demodulator 10 demodulates a PSK communication signal by using a synchronizer 12, a period window detector 20 and a logical device 22. The synchronizer 12 supplies a transition signal for indicating a reference edge of a communication synchronizer. A period window connected to the synchronizer 12 establishes a time period on the basis of a period of the transition signal. The logical device 22 which has input connected to output of the period window detector 20 generates a logical output signal. This demodulator 10 is equipped with a carrier wave boundary detector 34 for turning a message into a frame and minimizing detection of a noise, thus it becomes possible to measure a signal intensity oven a wide dynamic range.

公开(公告)号：JP2001036355A

公开(公告)日：2001-02-09

申请号：JP2000171840

申请日：2000-06-08

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HOFFMANN SHLOMO ,  VELLA-COLEIRO GEORGE P

IPC: H03G1/04 ,  H03F1/32 ,  H03G3/30 ,  H04B1/04

Abstract: PROBLEM TO BE SOLVED: To attain a continuous automation control mechanism for improving inexact prediction caused by nonuniform gain, intermodulation distortion(IMD) performance or temperature response of a low distortion high frequency amplifier and to attain an integrated onboard control mechanism, capable of performing control at the job site during normal operation of the amplifier. SOLUTION: A low distortion amplifier 100 is integrated with an optimization circuit for executing automation control of the amplifier 100. The optimization circuit has an extraction circuit 101 designed so as to extract various signals indicating operations of the amplifier under present operating conditions. A control circuit 200 to use information received from the extracting circuit 101 determines suitable control setting of a main component in the amplifier 100, corresponding to the present operating conditions. The optimization circuit guarantees that the output of the amplifier has a desired signal level, while guaranteeing that the IMD of output is minimized or removed under all the operating conditions.

公开(公告)号：CA2284138A1

公开(公告)日：2000-04-29

申请号：CA2284138

申请日：1999-09-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JOHNSON ROBERT EVEREST ,  VELLA-COLEIRO GEORGE P

IPC: H04L27/227 ,  H04L27/22 ,  H04L27/233

Abstract: A demodulator demodulates a PSK communications signal using a synchronizer, a period window detector, and a logic device. The synchronizer provides a transition signal representing reference edges of the communication signal. The period window detector, coupled to the synchronizer, establishes a time interval based on the period of the transition signal. Finally, the logic device, having logic inputs coupled to the outputs of the period-window detector, yields a logic output signal. The demodulator preferably includes a carrier boundary detector for framing messages and minimizing noise detection in a manner that permits signal strength measurements over a wide dynamic range.

公开(公告)号：DE69935055D1

公开(公告)日：2007-03-22

申请号：DE69935055

申请日：1999-10-18

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JOHNSON ROBERT E ,  VELLA-COLEIRO GEORGE P

IPC: H04L27/227 ,  H04L27/233 ,  H04L27/22

Abstract: A demodulator (10) demodulates a PSK communications signal using a synchronizer (12), a period window detector (20), and a logic device (22). The synchronizer provides a transition signal representing reference edges of the communication signal. The period window detector, coupled to the synchronizer, establishes a time interval based on the period of the transition signal. Finally, the logic device, having logic inputs coupled to the outputs of the period-window detector, yields a logic output signal. The demodulator preferably includes a carrier boundary detector (34) for framing messages and minimizing noise detection in a manner that permits signal strength measurements over a wide d ynamic range.

公开(公告)号：DE69935055T2

公开(公告)日：2007-07-19

申请号：DE69935055

申请日：1999-10-18

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JOHNSON ROBERT E ,  VELLA-COLEIRO GEORGE P

IPC: H04L27/227 ,  H04L27/233 ,  H04L27/22

Abstract: A demodulator (10) demodulates a PSK communications signal using a synchronizer (12), a period window detector (20), and a logic device (22). The synchronizer provides a transition signal representing reference edges of the communication signal. The period window detector, coupled to the synchronizer, establishes a time interval based on the period of the transition signal. Finally, the logic device, having logic inputs coupled to the outputs of the period-window detector, yields a logic output signal. The demodulator preferably includes a carrier boundary detector (34) for framing messages and minimizing noise detection in a manner that permits signal strength measurements over a wide d ynamic range.

公开(公告)号：AU5597999A

公开(公告)日：2000-05-04

申请号：AU5597999

申请日：1999-10-20

Applicant: LUCENT TECHNOLOGIES INC

Inventor： VELLA-COLEIRO GEORGE P ,  JOHNSON ROBERT E

IPC: H04L27/227 ,  H04L27/22 ,  H04L27/233

Abstract: A demodulator (10) demodulates a PSK communications signal using a synchronizer (12), a period window detector (20), and a logic device (22). The synchronizer provides a transition signal representing reference edges of the communication signal. The period window detector, coupled to the synchronizer, establishes a time interval based on the period of the transition signal. Finally, the logic device, having logic inputs coupled to the outputs of the period-window detector, yields a logic output signal. The demodulator preferably includes a carrier boundary detector (34) for framing messages and minimizing noise detection in a manner that permits signal strength measurements over a wide d ynamic range.