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发明公开
CN104539313A DSL噪声消除 无效 - 撤回

DSL噪声消除
摘要：
一种DSL噪声消除系统中的方法和装置，经由噪声参考信号输入端口接收噪声参考信号，并且执行以下所列出的进程a和b中至少之一，用于减少DSL传输线路上传输的DSL数据信号中的噪声，其中所述噪声消除系统连接到该DSL传输线路：a.i.)创建重复出现在所传输的DSL数据信号中的DSL同步符号的无噪声表示；并且a.ii.)基于所述DSL同步符号的无噪声表示和所接收的噪声参考信号减少所传输的DSL数据信号中的噪声；并且b.i.)分析所接收的噪声参考号和所传输的DSL数据信号中至少之一，以识别其中的一个或多个频带，从而削弱所传输的DSL数据信号中的噪声消除；并且b.ii.)响应于所述分析，引起所述噪声消除系统来削弱所传输的DSL数据信号中所识别的一个或多个频带的噪声消除。
摘要（英）：

Provided are a method and device for a DSL noise elimination system. A noise reference signal is received through a noise reference signal input port, and at least one of the process a and the process b is executed to be used for lowering noise in a DSL data signal transmitted by a DSL transmission line, wherein the noise elimination system is connected to the DSL transmission line. According to the step (a.i.), noiseless expression of a DSL synchronization symbol repeatedly occurring in the transmitted DSL data signal is created. According to the step (a.ii.), on the basis of the noiseless expression of the DSL synchronization symbol and the received noise reference signal, the noise in the transmitted DSL data signal is lowered. According to the step (b.i.), at least one of the received noise reference signal and the transmitted DSL data signal is analyzed, one or more frequency bands are identified, and therefore noise elimination in the transmitted DSL data signal is weakened. According to the step (b.ii.), in response to the analysis, the noise elimination system is induced to weaken noise elimination of one or more frequency bands identified in the transmitted DSL data signal.

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