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51. 发明授权

US07760635B2 Apparatus and method for latency control in a communications system 失效
标题翻译：通信系统中等待时间控制的装置和方法
公开(公告)号：US07760635B2
公开(公告)日：2010-07-20
申请号：US10706285
申请日：2003-11-13
申请人： Richard Greenfield , Clive Irving , Miguel Peeters
发明人： Richard Greenfield , Clive Irving , Miguel Peeters
IPC分类号： H04J3/16
CPC分类号： H04M11/062
摘要： The present invention provides a method for controlling transmission latency in a communications system, wherein the communications system is subject to a noise signal having at least a first noise phase and a second noise phase. The method includes determining a first bit rate for symbols transmitted during the first noise phase, and a second bit rate for symbols transmitted during the second noise phase, the first bit rate and the second bit rate being constrained such that a transmission latency does not exceed a pre-determined maximum allowed transmission latency; and transmitting symbols at the first bit rate during the first noise phase and at the second bit rate during the second noise phase. In other variants, the invention provides an apparatus, a constrained rate reciever, a transmitter and a signal.
摘要翻译：本发明提供一种用于控制通信系统中的传输等待时间的方法，其中通信系统经受具有至少第一噪声相位和第二噪声相位的噪声信号。该方法包括确定在第一噪声相位期间发送的符号的第一比特率，以及针对在第二噪声相位期间发送的符号的第二比特率，第一比特率和第二比特率被约束，使得传输等待时间不超过预定的最大允许传输延迟; 以及在第二噪声阶段期间以第一比特率发送符号，并且在第二噪声阶段期间以第二比特率发送符号。在其它变型中，本发明提供一种装置，约束速率接收器，发射机和信号。

52. 发明授权

US07362828B2 Method of and system for optimizing the capacity of a digital communication system in presence of both internal and external noise 失效
标题翻译：在存在内部和外部噪声的情况下优化数字通信系统的容量的方法和系统
公开(公告)号：US07362828B2
公开(公告)日：2008-04-22
申请号：US10698861
申请日：2003-11-03
申请人： Miguel Peeters , Raphael Cassiers
发明人： Miguel Peeters , Raphael Cassiers
IPC分类号： H04L1/00
CPC分类号： H04L1/00
摘要： A method of optimizing a communication system for receiving and processing an input communication signal includes selecting a first noise margin m to be applied against an external noise present on the input communication signal. The method further includes selecting a second noise margin mi to be applied against an internal noise introduced on the communications signal by the communication system. The second noise margin is a predetermined function of the first noise margin. The method also includes calculating a virtual noise to signal ratio that is a combination of an external noise to signal ratio NSRe, an internal noise to signal ratio NSRi, the first noise margin and the second noise margin. The method further includes adjusting one or more system parameters so as to maintain the virtual noise to signal ratio at a predetermined margin above a required noise to signal ratio.
摘要翻译：一种优化用于接收和处理输入通信信号的通信系统的方法包括：选择要对输入通信信号上存在的外部噪声施加的第一噪声容限m。该方法还包括选择要针对由通信系统在通信信号上引入的内部噪声施加的第二噪声容限m i i。第二噪声容限是第一噪声容限的预定函数。该方法还包括计算作为外部噪声与信号比NSR的组合的虚拟噪声信号比，即内部噪声与信号比NSR ，第一噪声余量和第二噪声容限。该方法还包括调整一个或多个系统参数，以便将虚拟噪声信号比保持在高于所需噪声信号比的预定裕度。

53. 发明申请

US20060159192A1 Method and system for a robust initialization symbol for digital duplexing 失效
标题翻译：用于数字双工的鲁棒初始化符号的方法和系统
公开(公告)号：US20060159192A1
公开(公告)日：2006-07-20
申请号：US11312642
申请日：2005-12-21
申请人： Miguel Peeters , Philippe Antoine , Geert Goris
发明人： Miguel Peeters , Philippe Antoine , Geert Goris
IPC分类号： H04L5/12
CPC分类号： H04L27/2607
摘要： Provided is a method and system for increasing cyclic prefix and cyclic suffix based upon a fast Fourier transform (FFT) and inverse fast Fourier transform (IFFT). The method includes representing at least one of the one or more DMT symbols in frequency domain to produce a frequency domain representation. The frequency domain representation corresponds to a quadrature amplitude modulation (QAM) constellation. Next the QAM constellation is rotated in the frequency domain by changing a characteristic of the DMT symbol as a function of tone index (k), cyclic extension length (CE), inverse fast fourier transform (IFFT) size (N), and pi. Finally, a number of extended symbols are produced to represent the DMT symbol based upon the rotating.
摘要翻译：提供了一种用于基于快速傅立叶变换（FFT）和快速傅里叶逆变换（IFFT）来增加循环前缀和循环后缀的方法和系统。该方法包括在频域中表示一个或多个DMT符号中的至少一个以产生频域表示。频域表示对应于正交幅度调制（QAM）星座。接下来，通过根据音调索引（k），循环扩展长度（CE），反向快速傅立叶变换（IFFT）大小（N）和pi来改变DMT符号的特性，在频域中旋转QAM星座。最后，产生多个扩展符号以基于旋转来表示DMT符号。

54. 发明申请

US20050286424A1 Differential delay compensation and measurement in bonded systems 有权
标题翻译：粘结系统中的差分延迟补偿和测量
公开(公告)号：US20050286424A1
公开(公告)日：2005-12-29
申请号：US11148556
申请日：2005-06-09
申请人： Miguel Peeters , Raphael Cassiers , Benoit Christiaens
发明人： Miguel Peeters , Raphael Cassiers , Benoit Christiaens
IPC分类号： G01R31/08 , H04J1/16 , H04J3/06 , H04L12/56
CPC分类号： H04L12/5601 , H04B3/462 , H04J3/0682 , H04L1/1896 , H04L5/14 , H04L25/0224 , H04L2012/5624 , H04L2012/5625 , H04L2012/5649
摘要： A method for determining differential delay of at least two bonded links is described. The method comprises a step of providing, on the part of a transmitting entity, at least some of the data packets transmitted from the transmitting entity to a receiving entity with time stamps, the time stamps indicating a point of time when a respective data packet has been generated, and a step of deriving a propagation delay from a time stamp of a data packet and a time of arrival of the data packet at a receiving entity. The method further comprises a step of determining a differential delay of a link from the propagation delay of the link and a propagation delay of a reference link.
摘要翻译：描述了确定至少两个键合链接的差分延迟的方法。该方法包括以下步骤：在发送实体的一部分上，提供从发送实体向接收实体发送的至少一些数据分组，其具有时间戳，所述时间戳指示相应数据分组具有的时间点以及从数据包的时间戳导出传播延迟和数据包到达接收实体的时间的步骤。该方法还包括从链路的传播延迟和参考链路的传播延迟确定链路的差分延迟的步骤。

55. 发明申请

US20050271127A1 Upstream power cutback 失效
标题翻译：上游功率削减
公开(公告)号：US20050271127A1
公开(公告)日：2005-12-08
申请号：US11146097
申请日：2005-06-07
申请人： Raphael Cassiers , Miguel Peeters
发明人： Raphael Cassiers , Miguel Peeters
IPC分类号： H04B3/56 , H04L27/26 , H04B1/38
CPC分类号： H04L27/2614 , H04B3/32
摘要： A system and method for optimizing the power level in the upstream direction in an ADSL communication system are disclosed. The system and method optimize the upstream signal power level by determining at least one system parameter related to the transmission of the input communications signal and modifying the bit and gain tables in response to the system parameter to optimize the upstream power level. More specifically, in one embodiment, the present invention selects a maximum received power configuration parameter for a receiving device, measures the received signal power at the receiving device, determinines a power backoff parameter for the transmitting device, uses the power backoff to modify the bit and gain tables and communicates the modified bit and gain tables to the transmitting device. In another embodiment, the present invention estimates the SNR loss resulting from a decrease in the upstream signal power level by distinguishing between noise sources whose power scales with the input signal received by the first transceiver (Np) and noise sources that remain constant with received signal power changes (Nc). The present invention then determines S′/N′=aS/(aNp+Nc), where S′=aS, the reduced signal level, and N′=the noise present with the reduced signal level.
摘要翻译：公开了一种在ADSL通信系统中优化上行方向功率电平的系统和方法。该系统和方法通过确定与输入通信信号的传输相关的至少一个系统参数和响应于系统参数修改比特和增益表来优化上游信号功率电平来优化上行信号功率电平以优化上行功率电平。更具体地，在一个实施例中，本发明为接收设备选择最大接收功率配置参数，测量接收设备处的接收信号功率，确定发射设备的功率回退参数，使用功率补偿来修改该位和增益表，并将修改后的位和增益表传送给发送设备。在另一个实施例中，本发明通过区分其功率量级与由第一收发器（Np）接收的输入信号的噪声源和与接收信号保持恒定的噪声源来估计由上行信号功率电平的降低引起的SNR损耗功率变化（Nc）。本发明然后确定S'/ N'= aS /（aNp + Nc），其中S'= aS，降低的信号电平，并且N'=随着降低的信号电平而存在的噪声。

56. 发明授权

US06792101B2 Method to transport a reference clock signal 失效
标题翻译：传输参考时钟信号的方法
公开(公告)号：US06792101B2
公开(公告)日：2004-09-14
申请号：US09882796
申请日：2001-06-15
申请人： Miguel Peeters , Jan Lieven Bert De Groote
发明人： Miguel Peeters , Jan Lieven Bert De Groote
IPC分类号： H04M300
CPC分类号： H04J3/0664 , H04J3/0673 , H04J3/0682
摘要： A method to transport a reference clock signal from a central office to a line terminal in a communication system. The central office retrieves a reference clock signal, and a first counter in the central office is synchronized with the reference clock signal. The counter values of the first counter are regularly transferred as part of physical layer operation and maintenance cells over the optical link. A counter value of a second counter of the carrier unit is adjusted when a counter value is received as part of a physical layer operation and maintenance cell. Clock signals are derived from the second counter for the line terminal. The first counter values are inserted into a group of predefined message fields of the physical layer operation and maintenance cell, and extracted therefrom to adjust the value of the second counter.
摘要翻译：一种将参考时钟信号从中心局传送到通信系统中的线路终端的方法。中心局检索参考时钟信号，中心局的第一个计数器与参考时钟信号同步。第一计数器的计数器值作为物理层操作和维护单元的一部分定期转移到光链路上。当作为物理层操作和维护单元的一部分接收到计数器值时，调整载体单元的第二计数器的计数器值。时钟信号从线路终端的第二计数器导出。将第一计数器值插入到物理层操作和维护单元的一组预定义的消息字段中，并从其中提取以调整第二计数器的值。

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