公开(公告)号：KR20120071757A

公开(公告)日：2012-07-03

申请号：KR20100133435

申请日：2010-12-23

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： YU HEE JUNG ,  KANG HUN SIK ,  LEE SOK KYU

IPC: H04B7/04 ,  H04L12/28 ,  H04W88/08

CPC classification number: H04B7/024 ,  H04L5/0023 ,  H04L27/2601 ,  H04W4/00 ,  H04W36/00 ,  H04W84/12 ,  H04W88/02 ,  H04B7/14

Abstract: PURPOSE: A wireless local area network service providing apparatus using a mobile unit is provided to offer a mass wireless data service to a mobile user by using a WLAN(Wireless Local Area Network) and an unlicensed bandwidth. CONSTITUTION: A transmission and reception unit(630) transmits and receives frames. A processor(610) functionally contacts to the transmission and reception unit. The processor processes and creates the frames for providing a WLAN service. The transmission and reception unit includes plural remote antennas(640). The remote antennas are separated according to moving paths of a mobile unit.

Abstract translation: 目的：提供使用移动单元的无线局域网服务提供装置，通过使用WLAN（无线局域网）和非许可带宽向移动用户提供大量无线数据服务。 构成：发送和接收单元（630）发送和接收帧。 处理器（610）功能地接触发送和接收单元。 处理器处理并创建用于提供WLAN服务的帧。 发送和接收单元包括多个远程天线（640）。 根据移动单元的移动路径分离远程天线。

公开(公告)号：KR20090063755A

公开(公告)日：2009-06-18

申请号：KR20070131237

申请日：2007-12-14

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： YOON CHAN HO ,  LEE IL GU ,  KANG HUN SIK ,  OH JONG EE ,  SONG YOO SEUNG ,  LEE SOK KYU ,  BANG SEUNG CHAN

IPC: H04L27/26 ,  H04B7/02 ,  H04B7/04

CPC classification number: H04B7/0626 ,  H04B7/0417 ,  H04L1/0003 ,  H04L27/2646

Abstract: A variable transmission method according to a subcarrier in a multiple input multiple output is provided to determine a subcarrier modulation method flexibly in a wireless channel environment by applying a modulation method to each subcarrier by using a CN(Condition number) that is channel information. The CN that is the channel information is calculated(401). A subcarrier modulation method is determined according to the CN value(402). The CN is obtained by changing the roles of a transmitting terminal and a receiving terminal. The CN is a value obtained by dividing the maximum value of a singular value of a diagonal matrix by the minimum value.

Abstract translation: 提供了一种根据多输入多输出中的副载波的可变传输方法，通过使用作为信道信息的CN（条件号）对每个子载波应用调制方法，在无线信道环境中灵活地确定副载波调制方法。 计算作为频道信息的CN（401）。 根据CN值（402）确定副载波调制方式。 通过改变发送终端和接收终端的角色来获得CN。 CN是通过将对角矩阵的奇异值的最大值除以最小值而获得的值。