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公开(公告)号:DE3871217D1
公开(公告)日:1992-06-25
申请号:DE3871217
申请日:1988-03-28
Applicant: CIT ALCATEL
Inventor: SURIE SERGE
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公开(公告)号:FR2556153B2
公开(公告)日:1986-09-12
申请号:FR8319211
申请日:1983-12-01
Applicant: CIT ALCATEL
Inventor: SURIE SERGE , MARCEL FRANCOIS
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公开(公告)号:FR2536610A1
公开(公告)日:1984-05-25
申请号:FR8219562
申请日:1982-11-23
Applicant: CIT ALCATEL
Inventor: LEVY MICHEL , SURIE SERGE
Abstract: In a QPSK system using one cycle of a squared-off sinusoid per Baud period to represent the data dibits, the following are disclosed: (1) a direct detection circuit using samples taken only during the second and third quarters of the Baud period; (2) timing recovery by recognition of the opposite polarity of any QPSK signal compared to a half-Baud-delayed version of itself; and (3) an encoding scheme wherein only one of the two dibits is differentially encoded.
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公开(公告)号:FR2304146A1
公开(公告)日:1976-10-08
申请号:FR7507646
申请日:1975-03-12
Applicant: CIT ALCATEL
Inventor: VERNEZY JACQUES , SURIE SERGE
Abstract: The bit transfer unit, forming part of a digital transmission system, is used to transfer a group of bits from a first bit train to a second synchronous bit train. The group of bits are supplied to a memory (5) via a write control circuit (11) and output from the memory (5) via a read control circuit. The write control circuit (11) is associated with an adjustable register (10, 13), receiving information from the first train, and logic means (14, 17, 18), such that the recording of the information in the memory is displayed by the register for a fixed interval, to avoid recording of information simultaneous with a memory read-out operation.
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公开(公告)号:CA1279380C
公开(公告)日:1991-01-22
申请号:CA562943
申请日:1988-03-30
Applicant: CIT ALCATEL
Inventor: SURIE SERGE
Abstract: Cet égaliseur automatique comporte un circuit de commande automatique de gain tendant à maintenir constante l'amplitude crête du signal égalisé ainsi qu'un réseau variable d'égalisation pourvu d'une commande permettant de modifier la pente de sa caractéristique de transfert de gain sans toucher à la valeur de son gain à la demi-fréquence Baud et un asservissement de mise en forme du spectre des fréquences qui contrôle cette commande et qui est constitué d'un circuit de détection de l'erreur moyenne de phase, par rapport aux milieux des intervalles Baud, des passages par zéro des traînes des impulsions apparaissant dans le signal de transmission numérique reçu et égalisé.
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公开(公告)号:FR2613560A1
公开(公告)日:1988-10-07
申请号:FR8704477
申请日:1987-03-31
Applicant: CIT ALCATEL
Inventor: SURIE SERGE
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公开(公告)号:FR2575015B2
公开(公告)日:1987-02-06
申请号:FR8419175
申请日:1984-12-14
Applicant: CIT ALCATEL
Inventor: SURIE SERGE
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公开(公告)号:FR2528642A1
公开(公告)日:1983-12-16
申请号:FR8210196
申请日:1982-06-11
Applicant: CIT ALCATEL
Inventor: SURIE SERGE
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公开(公告)号:FR2613560B1
公开(公告)日:1989-06-23
申请号:FR8704477
申请日:1987-03-31
Applicant: CIT ALCATEL
Inventor: SURIE SERGE
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公开(公告)号:FR2485842B1
公开(公告)日:1988-02-26
申请号:FR8014532
申请日:1980-06-30
Applicant: CIT ALCATEL
Inventor: SURIE SERGE , DELRUE CLAUDE
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