公开(公告)号：KR1020030094723A

公开(公告)日：2003-12-18

申请号：KR1020020031987

申请日：2002-06-07

Applicant: 한국전자통신연구원

Inventor： 김정학 ,  유태환

IPC: H04L12/50

Abstract: PURPOSE: A device for supplying a narrowband service in an ATM-PON(Passive Optical Network) system is provided to install a V5 processor in an OLT(Optical Line Termination), and to assign a narrowband service subscriber channel to an ONU(Optical Network Unit), thereby implementing a small and low-cost optical subscriber device when designing the ONU. CONSTITUTION: A PSTN interface block(101) transceives a signal with a PSTN exchange(102), forms an STM(Synchronous Transfer Module)-1 or an STM-4 interface structure with a B-ISDN interface block in an OLT(103), consists of PSTN interface devices(1011,1012,1013), and consists of an STM interface device(1014) for forming the STM-1 or the STM-4 interface structure with the B-ISDN interface block. An ATM cell is transmitted to the B-ISDN interface block and the STM interface device(1014) through a cell bus backplane.

Abstract translation: 目的：提供一种用于在ATM-PON（被动光网络）系统中提供窄带业务的设备，用于在OLT（Optical Line Termination，光线路终端）中安装V5处理器，并向ONU分配窄带业务用户信道（Optical Network 单元），从而在设计ONU时实现小型和低成本的光用户设备。 构成：PSTN接口块（101）用PSTN交换机（102）收发信号，与OLT（103）中的B-ISDN接口块形成STM（同步传输模块）-1或STM-4接口结构， 由PSTN接口设备（1011,1012,1013）组成，由用于与B-ISDN接口块形成STM-1或STM-4接口结构的STM接口设备（1014）组成。 ATM信元通过信元总线背板发送到B-ISDN接口块和STM接口设备（1014）。

公开(公告)号：KR1020010064278A

公开(公告)日：2001-07-09

申请号：KR1019990062432

申请日：1999-12-27

Applicant: 한국전자통신연구원

Inventor： 이훈 ,  유태환 ,  김정학 ,  이정진

IPC: H04L27/01

CPC classification number: H04L27/2647 ,  H04L25/03178

Abstract: PURPOSE: A time domain equalizer of a VDSL transmission system is provided which effectively reduces the amount of hardware and guarantees compatibility with asymmetric digital subscriber line transmission systems. CONSTITUTION: A time domain equalizer of a VDSL transmission system is constructed in a manner that time domain equalizers by signal bands are serially connected for signal bands obtained by dividing the entire signal band. A time domain equalizer(42) for a high frequency signal band and a time domain equalizer(41) for a low frequency signal band are serially connected. The time domain equalizer for a high frequency signal band and the time domain equalizer for a low frequency signal band obtain the signal bands using an algorithm for reducing a channel impulse response length. The time domain equalizer for a low frequency signal band connects a shift register between tabs to decrease data loss.

Abstract translation: 目的：提供VDSL传输系统的时域均衡器，有效减少硬件数量，保证与非对称数字用户线传输系统的兼容性。 构成：VDSL传输系统的时域均衡器以对通过划分整个信号频带获得的信号频带的信号频带的时域均衡器串行连接的方式构成。 串行连接用于高频信号频带的时域均衡器（42）和用于低频信号频带的时域均衡器（41）。 用于高频信号频带的时域均衡器和用于低频信号频带的时域均衡器使用用于减小信道脉冲响应长度的算法获得信号频带。 用于低频信号频带的时域均衡器将标签之间的移位寄存器连接以减少数据丢失。