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    • 2. 发明授权
    • Device and method for precoding data signals for PCM transmission
    • 用于PCM传输的数据信号预编码的装置和方法
    • US06173015B2
    • 2001-01-09
    • US09092482
    • 1998-06-05
    • M. Vedat EyubogluPierre A. HumbletDae-young KimJian Yang
    • M. Vedat EyubogluPierre A. HumbletDae-young KimJian Yang
    • H04C2549
    • H04L25/03343H04L25/4927
    • A device and method for precoding a sequence of analog levels transmitted over an analog channel to a quantization device, wherein the analog channel modifies the transmitted analog levels, including: a mapping device for mapping data bits to be transmitted to a sequence of equivalence classes, wherein each equivalence class contains one or more constellation points; a constellation point selector interconnected to the mapping device which selects a constellation point in each equivalence class to represent the data bits to be transmitted and which transmits a level that produces the selected constellation point at an input to the quantization device; and a filter device, operably coupled to the constellation point selector, which receives at its input previously transmitted levels and provides its output to the constellation point selector; wherein the filter device has a filter response which is based on the previously transmitted levels and a target response, and the target response is adapted using an analog channel error signal, the selected constellation point at an input to the quantization device.
    • 一种用于将通过模拟通道传输的模拟电平序列预编码到量化装置的装置和方法,其中所述模拟通道修改所发射的模拟电平,包括:映射装置,用于将要发送的数据位映射到等价类序列, 其中每个等价类包含一个或多个星座点; 互连到映射设备的星座点选择器,其选择每个等价类中的星座点以表示要发送的数据比特,并且在向量化设备的输入处发送产生所选择的星座点的电平; 以及滤波器装置,其可操作地耦合到星座点选择器,其在其输入端接收先前传输的电平并将其输出提供给星座点选择器; 其中所述滤波器装置具有基于先前发送的电平和目标响应的滤波器响应,并且使用模拟信道误差信号来适配所述目标响应,所述选择的星座点在所述量化装置的输入处。
    • 10. 发明授权
    • Method and apparatus for synchronizing AAL2 path states
    • 用于同步AAL2路径状态的方法和装置
    • US09054897B2
    • 2015-06-09
    • US13376258
    • 2010-03-19
    • Jian YangXuling Xiao
    • Jian YangXuling Xiao
    • H04L12/54H04L12/70
    • H04L12/5601H04L2012/563H04L2012/5656
    • The present invention provides a method and apparatus of synchronizing AAL2 path states between ATM adaptation layer type 2 (AAL2) signaling nodes, wherein a AAL2 signaling node as a synchronization requesting end sends a path state request message to a peer AAL2 signaling node of an AAL2 path, the peer AAL2 signaling node performs local check on the state of the AAL2 path designated by the request message after receiving the request message, and the peer AAL2 signaling node controls consistency synchronization processing on the AAL2 path states at two ends based on the result of the check. The present invention may avoid initial call failure incurred by inconsistency between states at two ends of an AAL2 path and improves success ratio of AAL2 path establishment.
    • 本发明提供了一种在ATM适配层类型2(AAL2)信令节点之间同步AAL2路径状态的方法和装置,其中作为同步请求端的AAL2信令节点向AAL2的对等体AAL2信令节点发送路径状态请求消息 对等体AAL2信令节点在接收到请求消息之后对请求消息指定的AAL2路径的状态进行本地检查,并且对等体AAL2信令节点基于结果控制两端的AAL2路径状态的一致性同步处理 的支票。 本发明可以避免在AAL2路径的两端的状态之间的不一致引起的初始呼叫失败并提高AAL2路径建立的成功率。