公开(公告)号：EP0624011A1

公开(公告)日：1994-11-09

申请号：EP93201222.2

申请日：1993-04-27

申请人： ALCATEL BELL Naamloze Vennootschap ,  Alcatel SEL Aktiengesellschaft

发明人： Sierens, Christiaan Hendrik Jan ,  Van der Plas, Gert ,  Mestdagh, Denis Julien Gilles ,  Steigenberger, Ulrich ,  Berger, Werner ,  Harnisch, Stephen

IPC分类号： H04B10/18

CPC分类号： H04B10/25137

摘要： The compensation device is used in an optical network where signals are transmitted from a main station (M) to one or a plurality of user stations (US1 to US3). It compensates for analogue optical signal distortion caused by laser chirp of a laser in the main station (M) which generates said analogue optical signal and fiber dispersion of the fiber link over which the optical signal is transmitted.
The device includes a distance measuring device (R) generating a result signal (MS) indicative of the distance between the main station and the user stations and which is possibly already available in the network to perform ranging when the latter network is also used to transmit digital signals from the user stations to the main station using Time Division Multiple Access. It also includes a processing circuit (PC) which in response to a given laser chirp and the result signal, provides a tuning signal (V) to tune the bias voltage of a varactor diode (VD) which is part of the compensation circuit inserted in the electrical signal path.
In an optimal implementation the measuring device (R) and the processing circuit (PC) are located in the main station (M), whilst the varactor diode (VD) is located in each user station.

摘要翻译： 补偿装置用于从主站（M）向一个或多个用户站（US1至US3）发送信号的光网络。 它补偿由主站（M）中的激光啁啾引起的模拟光信号失真，其产生所述模拟光信号和光信号在其上传输的光纤链路的光纤色散。 该设备包括距离测量设备（R），其产生指示主站和用户站之间的距离的结果信号（MS），并且当后一网络也被用于发送时，网络中可能已经可用的执行测距 使用时分多路访问从用户站到主站的数字信号。 它还包括处理电路（PC），该处理电路响应于给定的激光啁啾和结果信号，提供调谐信号（V）以调节变容二极管（VD）的偏置电压，变容二极管（VD）是插入的补偿电路的一部分 电信号路径。 在最佳实现中，测量装置（R）和处理电路（PC）位于主站（M）中，而变容二极管（VD）位于每个用户站中。

公开(公告)号：EP0507379B1

公开(公告)日：1997-01-15

申请号：EP92200826.3

申请日：1992-03-23

申请人： ALCATEL BELL Naamloze Vennootschap ,  ALCATEL N.V.

发明人： Mestdagh, Denis Julien Gilles ,  van de Voorde, Ingrid Zulma Benoit

IPC分类号： H04B10/00

CPC分类号： H04J14/0297 ,  H04B10/032 ,  H04J14/0279 ,  H04J14/0293

公开(公告)号：EP0548409A1

公开(公告)日：1993-06-30

申请号：EP91203369.3

申请日：1991-12-23

申请人： ALCATEL BELL Naamloze Vennootschap ,  ALCATEL N.V.

发明人： Van de Voorde, Ingrid Zulma Benoit ,  Mestdagh, Denis Julien Gilles ,  Van der Plas, Gert ,  Sierens, Christiaan Hendrik Jozef ,  Verbiest, Willem Jules Antoine

IPC分类号： H04B10/24

CPC分类号： H04B10/2503

摘要： The system includes two transmitters (T1, T2) and two receivers (R1, R2). One transmitter (T1) includes a wavelength tunable laser, sending an FSK optical signal (OS1) which has a constant intensity. In a first receiver (R1) this FSK optical signal (OS1) is transformed into an IM signal (OS1') by an optical pass band filter. This IM signal (OS1') is then detected by a first direct detection receiver (DM). In a second direct detection receiver (R2) the FSK optical signal (OS2) is not detected, since it has constant intensity. A second transmitter (T2) includes a Fabry Perot laser or a LED with a broad linewidth, sending an IM optical signal (OS2). This IM optical signal (OS2) is detected by the second direct detection receiver (R2). It is not detected by the first direct detection receiver (DM), because it is strongly attenuated when passing through the narrow bandpass optical filter (TM) before being applied to the first direct detection receiver. This system is especially advantageous in bidirectional optical transmission systems, due to its inherent insensitivity for reflections.

摘要翻译： 该系统包括两个发射器（T1，T2）和两个接收器（R1，R2）。 一个发射器（T1）包括波长可调激光器，发送具有恒定强度的FSK光信号（OS1）。 在第一个接收器（R1）中，这个FSK光信号（OS1）被一个光学通带滤波器转换成一个IM信号（OS1'）。 该IM信号（OS1'）然后由第一直接检测接收器（DM）检测。 在第二个直接检测接收器（R2）中，由于FSK光信号（OS2）具有恒定的强度，所以不检测FSK光信号（OS2）。 第二发射器（T2）包括法布里珀罗激光器或具有宽线宽的LED，发送IM光信号（OS2）。 该IM光信号（OS2）由第二直接检测接收器（R2）检测。 它不被第一直接检测接收机（DM）检测到，因为它在被施加到第一直接检测接收机之前在通过窄带通滤光器（TM）时被强烈衰减。 由于其对反射的固有不敏感性，该系统在双向光传输系统中特别有利。

公开(公告)号：EP0740451A1

公开(公告)日：1996-10-30

申请号：EP95201040.3

申请日：1995-04-24

申请人： ALCATEL BELL Naamloze Vennootschap

发明人： Mestdagh, Denis Julien Gilles ,  Spruyt, Paul ,  Reusens, Peter Paul Frans ,  op de Beeck, Edmond Celina Jozef

IPC分类号： H04M11/06 ,  H04L5/26

CPC分类号： H04L5/06 ,  H04M11/068

摘要： An analog MTS (Message Telephone Service) signal (TS) and an ADSL (Asymmetric Digital Subscriber Line) datastream (AD) are multiplexed to be transmitted simultaneously on a twisted pair transmission line (TL). In a first step, the analog MTS (Message Telephone Service) signal (TS) is transformed into a digital form (DS, TSC). The digital MTS (Message Telephone Service) signal (DS, TSC) in a second step is embedded in the ADSL (Asymmetric Digital Subscriber Line) datastream (AD).
At the receiver side, the digital MTS (Message Telephone Service) signal (DS, TSC) and ADSL (Asymmetric Digital Subscriber Line Service) datastream (AD) are split up again, and the digital MTS (Message Telephone Service) signal (DS, TSC) is retransformed into the analog MTS (Message Telephone Service) signal (TS).
To maintain telephone service even when the ADSL equipment fails, an alternative path enables transmission of the MTS (Message Telephone Service) signal in its analog form, independently from the ADSL equipment.

摘要翻译： 模拟MTS（消息电话服务）的信号（TS）和ADSL（非对称数字用户线）（AD）被多路复用为反式mitted可以同时对双绞传输线（TL）的数据流。 在第一步骤中，模拟MTS（消息电话服务）的信号（TS）被变换成数字形式（DS，TSC）。 在第二步骤中，数字MTS（消息电话服务）的信号（DS，TSC）被嵌入在ADSL（非对称数字用户线）的数据流（AD）。 在接收机侧，数字MTS（消息电话服务）的信号（DS，TSC）的数据流和ADSL（非对称数字用户线路服务）（AD）被再次分裂，并且数字MTS（消息电话服务）的信号（DS， TSC）被再次变换为模拟MTS（消息电话服务）的信号（TS）。 甚至当ADSL设备不替代路径允许在其模拟形式的MTS（消息电话服务）的信号，从ADSL设备unabhängig的传输保持电话服务。

公开(公告)号：EP0520127A1

公开(公告)日：1992-12-30

申请号：EP91870102.0

申请日：1991-06-28

申请人： ALCATEL BELL Naamloze Vennootschap ,  ALCATEL N.V.

发明人： Van der Plas, Gert ,  Reusens, Peter Paul Frans ,  Verbiest, Willem Jules Antoine ,  Mestdagh, Denis Julien Gilles ,  Sierens, Christiaan Hendrik Jozef

IPC分类号： H04L7/033

CPC分类号： H04L7/0338 ,  H04L7/044

摘要： The synchronizing arrangement synchronizes a digital data signal (Din) applied to its data input terminal (Din) with a local clock (CKin) applied to its clock input (CKin). It includes a tuned tapped delay line (TDL) where the local clock (CKin) is delayed, a sampling circuit (DR2,.,DR4) where the digital data signal is sampled using a number of delayed clock signals, a first processing circuit (P) where the middle of a 0 1 0 pattern included in the signal is determined, a second processing circuit P2 where the variation in time of that middle is determined and an output circuit where based on the mentioned middle and variation, one of the delayed clock signals is selected to read the digital data signal.
The tuned tapped delay line includes a tapped delay line and a feedback circuit at two inputs of which the input of the tuned tapped delay line and its 90 degrees tap are applied. The output of the feedback circuit is connected to a control input of the tapped delay line.

摘要翻译： 同步装置使应用于其数据输入端（Din）的数字数据信号（Din）与应用于其时钟输入（CKin）的本地时钟（CKin）同步。 它包括本地时钟（CKin）被延迟的调谐抽头延迟线（TDL），使用多个延迟的时钟信号对数字数据信号进行采样的采样电路（DR2，...，DR4），第一处理电路 P），其中确定包括在信号中的0 1 0模式的中间，确定中间时间变化的第二处理电路P2和基于所述中间和变化的输出电路，延迟 选择时钟信号来读取数字数据信号。 调谐抽头延迟线包括抽头延迟线和在两个输入处的反馈电路，其中施加调谐抽头延迟线的输入及其90度抽头。 反馈电路的输出连接到抽头延迟线的控制输入。

公开(公告)号：EP0507379A1

公开(公告)日：1992-10-07

申请号：EP92200826.3

申请日：1992-03-23

申请人： ALCATEL BELL Naamloze Vennootschap ,  ALCATEL N.V.

发明人： Mestdagh, Denis Julien Gilles ,  van de Voorde, Ingrid Zulma Benoit

IPC分类号： H04B10/00

CPC分类号： H04J14/0297 ,  H04B10/032 ,  H04J14/0279 ,  H04J14/0293

摘要： This protection arrangement protects an optical transmitter device (TX) with n optical transmit circuits (LC1/LCn) or an optical receiver device (RX) with n optical receive circuits (RX1/RXn). It includes fault evaluating means (FE) to detect a defective transmit/receiver circuit, a spare transmit (STC)/receive (SRC) circuit and switching means (S, S1) upon detection of a defective transmitter/receiver circuit by the fault evaluating means the latter controls the spare circuit and the switching means which then bypass the defective circuit by the spare circuit.

摘要翻译： 该保护装置利用具有n个光接收电路（RX1 / RXn）的n个光发射电路（LC1 / LCn）或光接收器装置（RX）保护光发送器装置（TX）。 它包括故障评估装置（FE），用于在通过故障评估检测到有缺陷的发射机/接收机电路时检测缺陷发射/接收电路，备用发射（STC）/接收（SRC）电路和切换装置（S，S1） 意味着后者控制备用电路和开关装置，然后由备用电路绕过故障电路。

公开(公告)号：EP0725509A1

公开(公告)日：1996-08-07

申请号：EP95200228.5

申请日：1995-01-31

申请人： ALCATEL BELL Naamloze Vennootschap

发明人： Mestdagh, Denis Julien Gilles ,  De Prycker, Martin Louis Florence

IPC分类号： H04L5/06

CPC分类号： H04L5/023

摘要： The demodulation of data modulated on a set of carriers with equidistant frequencies by a plurality of transmitters (T1 ... Tn) is executed in the present transmission system (TS) by a discrete multitone receiver (DMT-R).
The transmitters (T1 ... Tn) in the transmission system (TS) modulate their data on subsets of carriers which form part of the set of carriers with equidistant frequencies. These transmitters (T1 ... Tn) are possibly additionally equipped with a cyclic prefix adder (CPA), synchronization between them is guaranteed if a predefined condition is fulfilled.

摘要翻译： 由发射机的多个（T1 ... TN）上调制的一组具有等距的频率载波的数据的解调在本传输系统（TS）由离散多音频接收器（DMT-R）执行的。 在传输系统（TS）的发射机（T1 ... TN）调制在其上形成一组具有等距的频率载波中的一部分载波的子集他们的数据。 这些发射机（T1 ... TN）都可能另外配备有循环前缀添加器（CPA），如果满足预定条件在它们之间同步得到保证。

公开(公告)号：EP0719001A1

公开(公告)日：1996-06-26

申请号：EP94203724.3

申请日：1994-12-22

申请人： ALCATEL BELL Naamloze Vennootschap

发明人： Mestdagh, Denis Julien Gilles

IPC分类号： H04L5/06

CPC分类号： H04L27/2621 ,  H04L27/2626

摘要： The present inventions discloses a so called Discrete Multi Tone or DMT signal processor which is coupled to a transmitting end of a communication line and which reduces the need for the clipping of the amplitude of the output signal OS'. The signal processor includes the cascade connection of a vector transformation circuit VTC, a modulator MOD and a peak detection circuit PDC. The VTC circuit is provided with a plurality of input vectors IN whereon a vector transformation is performed according to a signal at a control terminal (CT) of the peak detection circuit PDC which is indicative of the fact that the amplitude of the output signal OS provided by the modulator MOD exceeds a predetermined threshold value.

摘要翻译： 本发明公开了一种所谓的离散多音或DMT信号处理器，其耦合到通信线路的发送端，并且减少了对输出信号OS'的幅度的削波的需要。 信号处理器包括矢量变换电路VTC，调制器MOD和峰值检测电路PDC的级联连接。 VTC电路设置有多个输入向量IN，其中根据峰值检测电路PDC的控制端（CT）处的信号执行向量变换，其指示提供的输出信号OS的幅度 由调制器MOD超过预定的阈值。

公开(公告)号：EP0544975A1

公开(公告)日：1993-06-09

申请号：EP91870197.0

申请日：1991-12-05

申请人： ALCATEL BELL Naamloze Vennootschap ,  ALCATEL N.V.

发明人： van der Plas, Gert ,  Verbiest, Willem Jules Antoine ,  Mestdagh, Denis Julien Gilles ,  Sierens, Christiaan Hendrik Jozef

IPC分类号： H04Q11/04

CPC分类号： H04J3/1694 ,  H04L2012/561 ,  H04L2012/5632 ,  H04Q11/0478

摘要： The time slot management system is included in a digital time division multiple access system comprising a main station MS and a plurlity of substations U1/16 connected to each other by means of a tree network. The substations U1/16 send to the main station MS upstream information packet in time slots assigned to each of the former stations by the latter one. Part of the time slots is reserved for management information and used by the substation to inform the main station about the bandwidth needed for the further transfer of the upstream information. According to this information the time slot management system allocates the time slots and informs the substations thereof. In this way a flexible and dynamical time slot allocation is provided.

摘要翻译： 时隙管理系统包括在数字时分多址系统中，该数字时分多址系统包括通过树网络彼此连接的主站MS和多个变电站U1 / 16。 变电站U1 / 16发送到主站MS上游信息包，后者由分配给前者的每个站的时隙发送。 部分时隙被保留用于管理信息，并由变电站使用，通知主站关于进一步传送上游信息所需的带宽。 根据该信息，时隙管理系统分配时隙并通知其变电站。 以这种方式提供灵活和动态的时隙分配。

公开(公告)号：EP0521197A1

公开(公告)日：1993-01-07

申请号：EP91201355.4

申请日：1991-06-04

申请人： ALCATEL BELL Naamloze Vennootschap ,  ALCATEL N.V.

发明人： van der Plas, Gert ,  Sierens, Christiaan Hendrik Jozef ,  Mestdagh, Denis Julien Gilles

IPC分类号： H04B10/20

CPC分类号： H04B10/272 ,  H04J3/0682 ,  H04L2012/5615 ,  H04L2012/5674

摘要： To determine the equalisation delay of a substation (S3), the main station (C) of a transmission system measures, during an initial coarse measurement, the time interval between the sending of a first ranging signal to the substation and the receipt of a reply signal. This reply signal has a frequency and amplitude substantially lower than the information signals sent by other substations (S1, S2) of the system to avoid interference therewith. During a subsequent fine measurement the main station measures the time interval between the sending of a second ranging signal and the receipt of a second reply signal having the same characteristics as the information signals. The other substations have to stop transmission of signals during an interval equal to the uncertainty time interval with which the equalisation delay was measured during the coarse measurement. To be able to apply this method, the receiver at the main station includes means to isolate (AZ) the first reply signal from the information signals and to recognize (COR) them, and a processing unit (PU) to determine the equalisation delay.

摘要翻译： 确定性矿变电站的均衡延迟（S3），一个传输系统测量主站（C）中，在初始粗略测量期间，第一测距信号的发送到变电站和收据的应答之间的时间间隔 信号。 此回复信号的频率和幅度比由系统的其他变电站（S1，S2）发送的，以避免与存在干扰信息信号低得多。 在测量过程中后来的细主站测量的第二测距信号的发送和接收具有相同特性作为信息信号的第二应答信号的之间的时间间隔。 其他变电站具有期间间隔等于所述不确定性的时间间隔，停止信号的发送与该均衡延迟的粗略测量期间所测得的。 为了能够应用该方法，在主站中的接收器包括用于分离（AZ）从信息信号的第一应答信号和识别（COR）它们，以及处理单元（PU），以确定性矿均衡延迟。