公开(公告)号：KR1020080051992A

公开(公告)日：2008-06-11

申请号：KR1020060123915

申请日：2006-12-07

Applicant: 한국전자통신연구원 ,  삼성전자주식회사

Inventor： 방영조 ,  유창완 ,  방승재 ,  김대호 ,  박윤옥 ,  안지환 ,  김일민

IPC: H04B7/08 ,  H04L12/64 ,  H04L1/02

CPC classification number: H04L25/03242 ,  H04L1/0631

Abstract: A method for detecting a space-time code in a mobile communication system is provided to detect a space-time code B for plural transmission antennas using a newly defined ML matrix and perform two dependent sphere decoding of the newly defined ML matrix, thereby reducing the amount of matrix operation. A method for detecting a space-time code in a mobile communication system comprises the following steps of: receiving signals from the nr number of receiving antennas; determining whether channels from transmission antennas 3,4 are better than the conditions of channels from transmission antennas 1,2; performing Cholesky decomposition for acquiring the F of an ML(Maximum Likelihood) matrix generated for performing sphere decoding; detecting x3 and x4 using two dependent sphere decoders; detecting x1 and x2 using a single symbol detection method; performing the Cholesky decomposition when the channels from the transmission antennas 1,2 are better than the conditions of the channels from the transmission antennas 3,4; detecting the x1 and the x2 using the two sphere decoders previously; detecting the x3 and the x4 using the single symbol detection method; and updating the radiuses of the sphere decoders if the x1, the x2, the x3, and the x4 are all detected.

Abstract translation: 提供了一种用于检测移动通信系统中的时空码的方法，以使用新定义的ML矩阵来检测多个发射天线的时空码B，并对新定义的ML矩阵执行两个依赖球解码，由此减少 矩阵运算量。 一种用于检测移动通信系统中的时空码的方法，包括以下步骤：从nr个接收天线接收信号; 确定来自发射天线3,4的信道是否优于来自发射天线1,2的信道的条件; 执行Cholesky分解以获取用于执行球体解码生成的ML（最大似然）矩阵的F; 使用两个相关球面解码器检测x3和x4; 使用单个符号检测方法检测x1和x2; 当来自发送天线1,2的信道优于来自发送天线3,4的信道的条件时，执行Cholesky分解; 以前使用两个球体解码器检测x1和x2; 使用单符号检测方法检测x3和x4; 并且如果全部检测到x1，x2，x3和x4，则更新球解码器的半径。

公开(公告)号：KR100349660B1

公开(公告)日：2002-08-22

申请号：KR1019990061927

申请日：1999-12-24

Applicant: 한국전자통신연구원

Inventor： 정희영 ,  김일민 ,  김형명 ,  오행석

IPC: H04B7/06

Abstract: 본발명은스마트안테나를이용한가변처리이득패킷코드분할다중접속시스템에서의패킷전송장치및 그방법과기록매체에관한것으로서, 스마트안테나를이용한가변처리이득패킷 CDMA 시스템에서간단한하드웨어만을추가하여전송데이터의전송전력을증가시킴과동시에전송시간을줄임으로써, 동일한비트율의데이터를전송하면서도타 사용자에대한간섭을감소시키기위하여, 소정의입력시간동안다수의이동단말로부터사용자의정보를패킷형태로입력받아, 사용자정보를분류하고, 분류된사용자정보를상기입력시간보다짧은주기로출력하기위한스케쥴링및 버퍼링수단; 상기스케쥴링및 버퍼링수단에서출력된사용자정보를바탕으로, 전송시간을줄이고전송전력을증가시킬수 있는상기각 이동단말에대한고전력빔의생성을제어하기위한신호를발생하는전력및 빔생성제어수단; 및상기전력및 빔생성제어수단의제어신호에따라, 전송시간이줄어들고전송전력이증가된빔을생성하여출력하기위한방사수단을포함하며, CDMA 시스템에서패킷전송등에이용됨.

公开(公告)号：KR1020010063828A

公开(公告)日：2001-07-09

申请号：KR1019990061927

申请日：1999-12-24

Applicant: 한국전자통신연구원

Inventor： 정희영 ,  김일민 ,  김형명 ,  오행석

IPC: H04B7/06

CPC classification number: H04W52/245 ,  H04W16/28 ,  H04W88/08

Abstract: PURPOSE: A device and a method for transmitting packets in variable processing gain packet CDMA(Code Division Multiple Access) system, using a smart antenna, are provided to add simple hardware so as to increase transmission power of transmission data and reduce a transmission time. CONSTITUTION: A scheduling and buffering unit(301) receives user information form mobile terminals for a predetermined input time in a packet type, to classify the user information and periodically output the classified user information. A power and beam generation controlling unit(302) controls the generation of high power beam for each mobile terminal, using the outputted user information. And an emission unit(303) generates beam according to a control signal of the power and beam generation controlling unit(302), for outputting.

Abstract translation: 目的：提供一种使用智能天线的可变处理增益分组CDMA（码分多址）系统中发送分组的装置和方法，以增加简单硬件，从而增加传输数据的传输功率并减少传输时间。 构成：调度和缓冲单元（301）以分组类型的预定输入时间从移动终端接收用户信息，对用户信息进行分类并周期性地输出分类的用户信息。 功率和光束产生控制单元（302）使用所输出的用户信息来控制每个移动终端的高功率光束的产生。 并且发射单元（303）根据功率和光束产生控制单元（302）的控制信号产生波束，用于输出。