公开(公告)号：KR100391293B1

公开(公告)日：2003-07-12

申请号：KR1020010051365

申请日：2001-08-24

Applicant: 한국전자통신연구원

Inventor： 홍대식 ,  고균병 ,  정인철 ,  조대순 ,  조성철 ,  이유로 ,  권동승 ,  경문건

IPC: H04B1/7107

Abstract: PURPOSE: A multiuser interference cancellation receiver for a TDD-CDMA(Time Division Duplex-Code Division Multiple Access) system and a method for controlling the interference cancellation are provided to perform interference cancellation for signals having high power values even when differences of signal power values are wide among users, so as to minimize errors in the detection of user signals having low signal power values. CONSTITUTION: A data extractor(100) extracts data from received signals and outputs the extracted data. A signal delay part(200) delays the signals outputted from the data extractor(100) during a predetermined time, and outputs the delayed signals. An interference cancellation selection part(300) extracts midamble signal channels from received original signals, to select and output users of the subject of the first interference cancellation. The first step interference cancellation block(400) receives data of the received signals from the data extractor(100), to perform the first parallel interference cancellation for the selected users of the first interference cancellation subject and output reproduction signals. And the second step interference cancellation block(500) receives data of the received signals delayed during the predetermined time and outputted from the signal delay part(200), to perform the second parallel interference cancellation using the first reproduction signals outputted from the first step interference cancellation block(400).

Abstract translation: 目的：提供一种用于TDD-CDMA（时分双工码分多址）系统的多用户干扰消除接收机和一种用于控制干扰消除的方法，以便即使当信号功率值 在用户中很宽，以便最小化检测具有低信号功率值的用户信号时的错误。 构成：数据提取器（100）从接收信号中提取数据并输出提取的数据。 信号延迟部分（200）在预定时间内延迟从数据提取器（100）输出的信号，并且输出延迟的信号。 干扰消除选择部分（300）从接收到的原始信号中提取中置码信号信道，以选择并输出第一干扰消除的对象的用户。 第一级干扰消除块（400）接收来自数据提取器（100）的接收信号的数据，以对第一干扰消除主体的所选用户执行第一并行干扰消除，并输出再现信号。 并且第二级干扰消除块（500）接收在预定时间内延迟并从信号延迟部分（200）输出的接收信号的数据，以使用从第一级干扰输出的第一再现信号来执行第二并行干扰消除 取消块（400）。

公开(公告)号：KR1020030023140A

公开(公告)日：2003-03-19

申请号：KR1020010056132

申请日：2001-09-12

Applicant: 한국전자통신연구원

Inventor： 조대순 ,  정인철 ,  조성철 ,  이유로 ,  권동승 ,  경문건

IPC: H04B7/26

CPC classification number: H04L25/0222 ,  H04B7/2656

Abstract: PURPOSE: A device for estimating a channel in a time division bidirectional communication system is provided to use a channel estimating method from a chip unit, a symbol unit, and a time slot, thereby minimizing an error caused during channel estimation. The device is provided to use a simple averaging method, thereby reducing random FM phenomenon caused by a channel estimating error. CONSTITUTION: A converter(100) receives a transmitted RF signal, and converts the signal into a baseband signal. A matching filter(200) filters the converted signal. A multiplier(300) multiples a signal sampled by a sampling period with chip units from the filtered signal by a midamble sequence for I and Q codes. An adder(400) adds signals as many as all midamble chips from the multiplied signal. An accumulator(500) divides the added signals as many as the number of the midamble chips, and obtains an average value. A channel estimating calculator(600) calculates a channel estimating value through consecutive two time slots or one-time slot from output values of the accumulator(500).

Abstract translation: 目的：提供一种用于估计时分双向通信系统中的信道的装置，以使用来自码片单元，符号单元和时隙的信道估计方法，从而最小化信道估计期间引起的误差。 提供该设备以使用简单的平均方法，从而减少由信道估计误差引起的随机FM现象。 构成：A转换器（100）接收发送的RF信号，并将该信号转换为基带信号。 匹配滤波器（200）对转换的信号进行滤波。 乘法器（300）通过用于I和Q代码的中间码序列将来自滤波信号的码片单元的采样周期采样的信号乘以中间码序列。 加法器（400）从相乘的信号中加入与所有中置码片一样多的信号。 累加器（500）将添加的信号与中间码片的数量相等，并获得平均值。 信道估计计算器（600）通过累加器（500）的输出值从连续的两个时隙或一个时隙计算信道估计值。

公开(公告)号：KR1020030013152A

公开(公告)日：2003-02-14

申请号：KR1020010047490

申请日：2001-08-07

Applicant: 한국전자통신연구원

Inventor： 권동승 ,  조대순 ,  조성철 ,  이유로 ,  정인철 ,  경문건

IPC: H04W84/16

Abstract: PURPOSE: A wireless connection device for a multimedia service and a method therefor are provided to construct a TDD(Time Division Duplex) type wireless private network in a limited area using one public communication portable phone and receive a voice telephone call and an Internet service using the wireless private network. CONSTITUTION: A channel management device(210) initializes mobile terminals(110,120,130), transmits and receives subscriber association information with the mobile terminals(110,120,130), and processes the access and paging of the mobile terminals(110,120,130). A wired network interface device(220) connects to an external network and converts a signal transmitted and received to a TDD type mobile terminal. A system control unit(230) connects to the channel management device(210) and the wired network interface device(220), processes a call, manages the registration and state of subscribers, and manages and controls each device.

Abstract translation: 目的：提供一种用于多媒体业务的无线连接装置及其方法，用于使用一个公共通信便携式电话在有限的区域内构建TDD（时分双工）型无线专网，并接收语音电话呼叫和使用 无线专网。 构成：信道管理装置（210）初始化移动终端（110,120,130），与移动终端（110,120,130）发送和接收用户关联信息，并处理移动终端（110,120,130）的接入和寻呼。 有线网络接口设备（220）连接到外部网络，并将发送和接收的信号转换为TDD型移动终端。 系统控制单元（230）连接到信道管理设备（210）和有线网络接口设备（220），处理呼叫，管理用户的注册和状态，并管理和控制每个设备。