Multirate crosstalk identification in xDSL systems
Multirate crosstalk identification in xDSL systems
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DOI：
10.1109/tcomm.2006.881380
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发表时间：
2006-10
影响因子：
8.3
通讯作者：
Yang Shi;F. Ding;Tongwen Chen
中科院分区：
文献类型：
--
作者：
Yang Shi;F. Ding;Tongwen Chen
通过同一电话线传输的多种服务之间的串扰是数字用户线路 (DSL) 服务的主要限制。从频谱管理的角度来看，准确映射在给定对中产生串扰的所有服务非常重要。这篇关于串扰识别的论文是出于一个重要的实际考虑：构成串扰的信号在 xDSL 系统中以不同的速率传输。因此，我们在这里建议使用“阻塞技术”，导出多速率xDSL网络的阻塞状态空间模型，并建立可用输入和输出数据之间的映射关系。进一步，我们利用最小二乘原理识别串扰函数，并研究收敛速度和参数估计误差的上限。最后，我们用仿真例子来说明和验证理论结果
Crosstalk between multiple services transmitting through the same telephone cable is the primary limitation to digital subscriber line (DSL) services. From a spectrum management point of view, it is important to have an accurate map of all the services that generate crosstalk into a given pair. This paper on crosstalk identification is motivated by an important practical consideration: the signals constituting the crosstalk are transmitted at different rates in xDSL systems. Therefore, we here propose to use the "blocking technique," we derive blocked state-space models for multirate xDSL networks, and we set up the mapping relationship between available input and output data. Further, we use the least-squares principle to identify the crosstalk functions, and study the convergence rate and upper bound of the parameter-estimation error. Finally, we illustrate and verify the theoretical findings with simulation examples