公开(公告)号：KR1020030044505A

公开(公告)日：2003-06-09

申请号：KR1020010075274

申请日：2001-11-30

Applicant: 한국전자통신연구원

Inventor： 한경태 ,  어익수 ,  정희범 ,  김경수

IPC: H04B1/7113

CPC classification number: H04B1/7113 ,  H04B1/7117

Abstract: PURPOSE: A device for searching a multi-path of a spread spectrum communication system and a method thereof are provided to search each time delay information for signals having a short delay time about 1 chip, and to assign the information to a rake receiver, thereby improving efficiency of a receiver. CONSTITUTION: A radio receiver(300) converts received radio signals into baseband signals, and outputs the converted signals. A profile calculator(311) calculates a multi-path profile of the baseband signals, and outputs a calculated result. The first detector(315) compares a peak value of the multi-path profile with a value of a profile distant from the peak by a predetermined time, to decide whether the radio signals pass a short delay multi-path. A path selector(313) receives the multi-path profile and a detection result of the first detector(315), to generate time delay information by paths and separate plural paths where the radio signals passes. And a receiving unit(330) receives the time delay information of the paths and despreads the baseband signals to sum the despreaded signals.

Abstract translation: 目的：提供一种用于搜索扩频通信系统的多路径的装置及其方法，用于搜索具有约1个码片的短延迟时间的信号的每个时间延迟信息，并将该信息分配给瑞克接收机，从而 提高接收机的效率。 构成：无线电接收机（300）将接收到的无线电信号转换为基带信号，并输出转换后的信号。 轮廓计算器（311）计算基带信号的多径分布，并输出计算结果。 第一检测器（315）将多径分布图的峰值与远离峰值的分布的值比较预定时间，以确定无线电信号是否通过短延迟多径。 路径选择器（313）接收多径分布和第一检测器（315）的检测结果，以通过路径产生时间延迟信息，并且分离出无线电信号通过的多个路径。 并且接收单元（330）接收路径的时间延迟信息，并且对基带信号进行解扩以对所解扩的信号进行求和。

公开(公告)号：KR100377197B1

公开(公告)日：2003-03-26

申请号：KR1020000082253

申请日：2000-12-26

Applicant: 한국전자통신연구원

Inventor： 한경태 ,  임인기 ,  어익수 ,  서혜주 ,  김경수 ,  정희범 ,  조한진

IPC: H04B1/16

CPC classification number: H04L5/06 ,  H04B1/7115

Abstract: In the apparatus and method for separating carrier of multicarrier wireless communication receiver system, each carrier separation is performed after a quantization in a wireless communication receiver system such as a received multicarrier CDMA (Code Division Multiple Access) etc., to thereby reduce the whole number of quantizers and separate multicarrier from a received signal. For that, the apparatus for separating the carrier of the multicarrier wireless communication receiver system includes an internal oscillating unit for generating internal multicarrier; a plurality of frequency transition units for respectively down-converting the multicarrier generated by the internal oscillating unit and moving it to frequency of "0" as a frequency center; and a plurality of filtering units for individually filtering the respective carrier moved by the plurality of frequency transition units to the frequency center as the frequency of "0", through a low frequency pass band and for providing it as an input of a rake receiver.

Abstract translation: 在用于多载波无线通信接收机系统的载波分离的设备和方法中，在诸如接收到的多载波CDMA（码分多址）等的无线通信接收机系统中进行量化之后执行每个载波分离，从而减少整数 量化器和独立的多载波与接收信号。 为此，用于分离多载波无线通信接收机系统的载波的设备包括：用于生成内部多载波的内部振荡单元; 多个频率转换单元，用于分别下转换由内部振荡单元产生的多载波并将其移动到“0”的频率; 作为一个频率中心; 以及多个滤波单元，用于通过低频通带将由多个频率转换单元移动的相应载波单独滤波到作为频率“0”的频率中心，并用于将其提供为瑞克接收机的输入 。

公开(公告)号：KR100453811B1

公开(公告)日：2004-10-20

申请号：KR1020010075274

申请日：2001-11-30

Applicant: 한국전자통신연구원

Inventor： 한경태 ,  어익수 ,  정희범 ,  김경수

IPC: H04B1/7113

CPC classification number: H04B1/7113 ,  H04B1/7117

Abstract: A multipath searching device includes a radio front-end for converting a received radio signal into a baseband signal and for outputting the baseband signal. A profile calculating unit is included for calculating and outputting the multipath profile of the baseband signal. A first detector determines whether or not the radio signal traveled along a multipath is having a short-delay path by comparing the peak value of the multipath profile with a profile value of a predetermined position time interval before or after the peak of the multipath profile. A path selector receives the multipath profile and the detection result of the first detector, generates time delay information for each path, and separates many paths along which the radio signal traveled. A receiving unit receives the time delay information of the paths, despreads the baseband signal, and combines despread signals.

Abstract translation: 多路径搜索设备包括用于将接收到的无线电信号转换为基带信号并输出​​该基带信号的无线电前端。 包括简档计算单元，用于计算和输出基带信号的多径分布。 第一检测器通过将多径分布的峰值与多径分布的峰值之前或之后的预定位置时间间隔的分布值进行比较来确定沿多径传播的无线电信号是否具有短延迟路径。 路径选择器接收第一检测器的多路径分布和检测结果，产生每个路径的时间延迟信息，并分离出无线电信号沿其行进的许多路径。 接收单元接收路径的时间延迟信息，对基带信号进行解扩，并组合解扩信号。

公开(公告)号：KR1020020053978A

公开(公告)日：2002-07-06

申请号：KR1020000082253

申请日：2000-12-26

Applicant: 한국전자통신연구원

Inventor： 한경태 ,  임인기 ,  어익수 ,  서혜주 ,  김경수 ,  정희범 ,  조한진

IPC: H04B1/16

CPC classification number: H04L5/06 ,  H04B1/7115

Abstract: PURPOSE: A carrier separating apparatus and method of a multi-carrier radio communication receiving system are provided to reduce the number of quantizers by separating carriers after its quantization, and easily control power of a carrier by equalizing a frequency power of each carrier by rendering the number of frequency down adjustments to be the same. CONSTITUTION: An internal oscillation(NCO) block(210) generates internal multi-carriers in order to separate the multi-carriers from a received signal. A multiplier block(240) down-converts each of the multi-carriers generated by the internal oscillation(NCO) block(210) and moves them to a frequency of 0. A low frequency band pass filter block(250) filters each carrier moved to the frequency of 0 by the multiplier block(240) to a low frequency pass band to delete information of an unnecessary band and provides its own carrier information as an input of a rake receiver(300).

Abstract translation: 目的：提供一种多载波无线电通信接收系统的载波分离装置和方法，通过在量化后分离载波来减少量化器的数量，并且通过使每个载波的频率功率均衡，容易地控制载波的功率 频率下降调整数相同。 构成：内部振荡（NCO）块（210）产生内部多载波，以便将多载波与接收信号分离。 乘法器块（240）对由内部振荡（NCO）块（210）产生的多个载波进行下变频，并将它们移动到0的频率。低频带通滤波器块（250）对每个载波移动 通过乘法器块（240）将频率为0的频率转换为低频通带，以删除不需要的频带的信息，并提供其自己的载波信息作为前置雷达接收机（300）的输入。