公开(公告)号：US20070041348A1

公开(公告)日：2007-02-22

申请号：US11493449

申请日：2006-07-26

申请人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Myeon-Kyun Cho ,  Jong-Hyeuk Lee ,  Hyun-Kyu Yu ,  Daesik Hong

发明人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Myeon-Kyun Cho ,  Jong-Hyeuk Lee ,  Hyun-Kyu Yu ,  Daesik Hong

IPC分类号： H04B7/216

CPC分类号： H04L27/2657 ,  H04B1/70735 ,  H04J11/0069 ,  H04L5/0017 ,  H04L5/0048 ,  H04L25/03866 ,  H04L27/2613

摘要： Disclosed is transmitting/receiving apparatus and method for efficient cell search in a broadband wireless communication system using multiple carriers. The apparatus includes a BS generating an SCH signal by mapping predetermined symbols to predetermined subcarriers according to a code group to which the BS belongs, code-multiplexing a TCH signal and a pilot channel signal mapped to a predetermined time-frequency area and scrambling the code-multiplexed signal with a predetermined scrambling code identifying the BS along a time axis first, time-multiplexing the SCH signal with the scrambled signal, OFDM-modulating the time-multiplexed signal, and transmitting the OFDM-modulated signal.

摘要翻译： 公开了在使用多个载波的宽带无线通信系统中用于高效小区搜索的发射/接收装置和方法。 该装置包括通过根据BS所属的代码组将预定符号映射到预定的子载波来生成SCH信号的BS，对TCH信号进行码复用和映射到预定的时频区域的导频信道信号， 首先确定沿着时间轴的BS的预定扰频码的多路复用信号，用加扰信号对SCH信号进行时分多路复用，对时间复用信号进行OFDM调制，以及发送OFDM调制信号。

公开(公告)号：US20050180354A1

公开(公告)日：2005-08-18

申请号：US10996699

申请日：2004-11-24

申请人： Yoon-Ok Cho ,  Yong-Hoon Lee ,  Young-Ho Jung ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam

发明人： Yoon-Ok Cho ,  Yong-Hoon Lee ,  Young-Ho Jung ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam

IPC分类号： H04L1/00 ,  H04L5/02 ,  H04L27/26 ,  H04Q7/00

CPC分类号： H04L5/023 ,  H04L1/0003 ,  H04L1/0015 ,  H04L27/2608

摘要： An adaptive modulation scheme relating to an RA problem for maximizing the transmission rates of all users for maximum transmission rates in an OFDMA system including some users requiring to use services at fixed data rates. The scheme proposes introduction of an adaptive modulation using linear programming into an existing scheme for a system including a single kind of users, thereby enabling simultaneous execution of the adaptive modulation for all users in a system including two kinds of users. Further, the invention proposes another scheme of sequentially allocating subchannels to the users when the fixed transmission rate has a sufficiently small value, in order to reduce the complexity.

摘要翻译： 一种与RA问题有关的自适应调制方案，用于在包括一些需要以固定数据速率的业务的用户的OFDMA系统中最大化所有用户的最大传输速率的传输速率。 该方案提出了使用线性规划的自适应调制引入到包括单一用户的系统的现有方案中，从而能够在包括两种用户的系统中为所有用户同时执行自适应调制。 此外，为了降低复杂度，本发明提出了当固定传输速率具有足够小的值时向用户顺序分配子信道的另一方案。

公开(公告)号：US20050147024A1

公开(公告)日：2005-07-07

申请号：US10972034

申请日：2004-10-22

申请人： Young-Ho Jung ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam ,  Yong-Hoon Lee ,  Young-Doo Kim

发明人： Young-Ho Jung ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam ,  Yong-Hoon Lee ,  Young-Doo Kim

IPC分类号： H04J11/00 ,  H04B1/713 ,  H04L5/02 ,  H04L27/26

CPC分类号： H04L5/0007 ,  H04B1/713 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2655

摘要： A communication method in an FH-OFDM communication system having a plurality of BSs is provided. A predetermined number of pilot pattern groups are generated, each pilot pattern group having a predetermined number of different pilot patterns for pilot transmission. The pilot patterns in each of the pilot pattern groups are mapped to different FH sequence sets. The pilot patterns and FH sequence sets are assigned to the BSs so that MSs within the service areas of the BSs can identify the BSs.

摘要翻译： 提供了具有多个BS的FH-OFDM通信系统中的通信方法。 产生预定数量的导频模式组，每个导频模式组具有用于导频传输的预定数量的不同导频模式。 每个导频模式组中的导频模式映射到不同的FH序列集。 导频模式和FH序列集被分配给BS，使得BS的服务区域内的MS可以识别BS。

公开(公告)号：US07826517B2

公开(公告)日：2010-11-02

申请号：US11710856

申请日：2007-02-26

申请人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jong-Hyun Kwun ,  Jong-Bu Lim ,  Gi-Hong Im ,  Chan-Ho Choi

发明人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jong-Hyun Kwun ,  Jong-Bu Lim ,  Gi-Hong Im ,  Chan-Ho Choi

IPC分类号： H04B1/69 ,  H04B1/707 ,  H04B1/713

CPC分类号： H04B7/0854 ,  H04L1/0656

摘要： A receiver for ICI cancellation in a MIMO system is provided, in which a detection orderer determines a subcarrier detection order according to SINRs of subcarriers in an I-CMOS, a detector receives a vector on the subcarriers and a priori information from a decoder according to the subcarrier detection order and iteratively estimates the received vector using the a priori information, and the decoder decodes an ICI-cancelled signal according to the estimate.

摘要翻译： 提供了一种MIMO系统中用于ICI消除的接收机，其中检测对象根据I-CMOS中的子载波的SINR确定子载波检测顺序，检测器接收到子载波上的向量，根据 子载波检测顺序，并使用先验信息迭代地估计接收到的矢量，并且解码器根据估计解码ICI消除信号。

公开(公告)号：US07706351B2

公开(公告)日：2010-04-27

申请号：US11703266

申请日：2007-02-07

申请人： Cheol-Woo You ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Joo-Hwan Chun ,  Kyung-Chun Lee ,  Yung-Soo Kim

发明人： Cheol-Woo You ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Joo-Hwan Chun ,  Kyung-Chun Lee ,  Yung-Soo Kim

IPC分类号： H04B7/208

CPC分类号： H04L25/03343 ,  H04L5/023 ,  H04L25/0226 ,  H04L2025/03802

摘要： Disclosed is a method for transmitting an uplink signal by a mobile station in a mobile communication system using an OFDMA scheme. The method includes estimating a downlink channel status by using a signal received from a base station; determining a precoding matrix by using the estimated downlink channel status; and transmitting a signal obtained by multiplying an uplink signal to be transmitted by the precoding matrix to the base station.

摘要翻译： 公开了一种移动台在使用OFDMA方案的移动通信系统中发送上行链路信号的方法。 该方法包括：使用从基站接收的信号来估计下行链路信道状态; 通过使用所估计的下行链路信道状态来确定预编码矩阵; 并且将通过预编码矩阵发送的上行链路信号乘以基站而获得的信号。

公开(公告)号：US07532599B2

公开(公告)日：2009-05-12

申请号：US11374735

申请日：2006-03-14

申请人： Eung-Sun Kim ,  Jae-Sang Ham ,  Jong-Hyeuk Lee ,  Chung-Yong Lee ,  Sei-Joon Shim ,  Kyeong-Yeon Kim

发明人： Eung-Sun Kim ,  Jae-Sang Ham ,  Jong-Hyeuk Lee ,  Chung-Yong Lee ,  Sei-Joon Shim ,  Kyeong-Yeon Kim

IPC分类号： H04W4/00 ,  H04W72/00 ,  H04J11/00 ,  H03C7/02 ,  H04B1/02 ,  H04B7/02 ,  H04B17/02 ,  H04B1/00 ,  H04B7/00

CPC分类号： H04L1/0675 ,  H04L1/0003 ,  H04L1/0656

摘要： A user allocating apparatus and method in a multiple antenna mobile communication system supporting multi-user diversity is provided. Each user calculates effective Signal-to-Interference Noise Ratios (SINRs) and bit loading over every possible detection order and selects a detection order maximizing the number of channels with a minimum product of the minimum symbol distance of a modulation scheme and an effective SINR, thereby minimizing an average error probability. A base station receives detection orders from users and selects a user with a maximum detection order value. The base station then transmits data to the selected user using modulation schemes determined by the user for the transmit antennas.

摘要翻译： 提供了一种支持多用户分集的多天线移动通信系统中的用户分配装置和方法。 每个用户在每个可能的检测顺序上计算有效的信号与干扰噪声比（SINR）和比特加载，并且以调制方案和有效SINR的最小符号距离的最小乘积选择最大化信道数量的检测顺序， 从而使平均误差概率最小化。 基站接收用户的检测命令，并选择具有最大检测顺序值的用户。 然后，基站使用由用户为发射天线确定的调制方案向所选择的用户发送数据。

公开(公告)号：US20070248151A1

公开(公告)日：2007-10-25

申请号：US11710856

申请日：2007-02-26

申请人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jong-Hyun Kwun ,  Jong-Bu Lim ,  Gi-Hong Im ,  Chan-Ho Choi

发明人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jong-Hyun Kwun ,  Jong-Bu Lim ,  Gi-Hong Im ,  Chan-Ho Choi

IPC分类号： H04B1/00

CPC分类号： H04B7/0854 ,  H04L1/0656

摘要： A receiver for ICI cancellation in a MIMO system is provided, in which a detection orderer determines a subcarrier detection order according to SINRs of subcarriers in an I-CMOS, a detector receives a vector on the subcarriers and a priori information from a decoder according to the subcarrier detection order and iteratively estimates the received vector using the a priori information, and the decoder decodes an ICI-cancelled signal according to the estimate.

摘要翻译： 提供了一种MIMO系统中用于ICI消除的接收机，其中检测对象根据I-CMOS中的子载波的SINR确定子载波检测顺序，检测器接收到子载波上的向量，根据 子载波检测顺序，并使用先验信息迭代地估计接收到的矢量，并且解码器根据估计解码ICI消除信号。

公开(公告)号：US20070230383A1

公开(公告)日：2007-10-04

申请号：US11649168

申请日：2007-01-03

申请人： Tae-Won Yune ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Eung-Sun Kim ,  Jong-Hyung Kwun

发明人： Tae-Won Yune ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Eung-Sun Kim ,  Jong-Hyung Kwun

IPC分类号： H04B7/00

CPC分类号： H04L1/0618

摘要： A method and apparatus for transmitting and receiving a signal in a wireless communication system. The wireless communication system includes a transmitter with at least four transmit antennas and a receiver with at least one receive antenna. Space Frequency Block Coding (SFBC) processes are performed for input signals on a basis of two antenna pairs. Signal blocks whose number corresponds to the number of transmit antennas are output. A Space Time Block Coding (STBC) process is performed for the signal blocks generated according to the antenna pairs. Signals carried by single carriers are transmitted through the at least four transmit antennas mapped to the signal blocks.

摘要翻译： 一种用于在无线通信系统中发送和接收信号的方法和装置。 无线通信系统包括具有至少四个发射天线的发射机和具有至少一个接收天线的接收机。 对于基于两个天线对的输入信号执行空间频率块编码（SFBC）处理。 输出与发送天线数对应的信号块。 对根据天线对产生的信号块执行空时块编码（STBC）处理。 由单载波携带的信号通过映射到信号块的至少四个发射天线发射。

公开(公告)号：US20060159196A1

公开(公告)日：2006-07-20

申请号：US11335268

申请日：2006-01-19

申请人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Hui-Chul Won

发明人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Hui-Chul Won

IPC分类号： H04L1/02 ,  H04B1/10 ,  H04L27/06

CPC分类号： H04L1/0631 ,  H04L1/0048 ,  H04L1/005 ,  H04L25/0212 ,  H04L25/03006 ,  H04L27/2607 ,  H04L2025/03617

摘要： An apparatus and method for channel estimation and CP reconstruction in an OFDM-STBC mobile communication system are provided. An ISI canceller cancels ISI signal components from first and second received symbol sequences. A cyclicity restorer cancels ICI signal components from the ISI-cancelled first received symbol sequence and the ISI-cancelled second received symbol sequence. A recoverer acquires the recovered sequence estimates of the ICI-cancelled first received symbol sequence and the ICI-cancelled second received symbol sequence by decoding. The ICI cancellation of the ISI-cancelled first and second received symbol sequences and the ISI cancellation of the second received symbol sequence are iterated a predetermined number of times.

公开(公告)号：US07515902B2

公开(公告)日：2009-04-07

申请号：US11143074

申请日：2005-06-02

申请人： Goo-Hyun Park ,  Dae-Sik Hong ,  Ye-Hoon Lee ,  Eung-Sun Kim ,  Myeon-Gyun Cho ,  Jong-Hyeuk Lee

发明人： Goo-Hyun Park ,  Dae-Sik Hong ,  Ye-Hoon Lee ,  Eung-Sun Kim ,  Myeon-Gyun Cho ,  Jong-Hyeuk Lee

IPC分类号： H04Q7/20

CPC分类号： G01S11/10 ,  H04W64/006

摘要： Disclosed is a method for estimating the velocity of a mobile station in Rician fading environments in which a direct wave exists. Cellular mobile communication environments include two environments, Rician fading environments in which a direct wave exists and Rayleigh fading environments in which a direct wave does not exist. Generally, many methods for estimating the velocity of a mobile station have been known in Rayleigh fading environments. However, in Rician fading environments in which a direct wave exists, many errors occurs in estimating the velocity of a mobile station due to difficulty in estimation of a Rician coefficient K and an incident angle θ0. According to the invention, a method is provided wherein error is mostly eliminated in estimating the velocity of a mobile station by obtaining a maximum Doppler frequency of the mobile station, even without directly obtaining a Rician coefficient K and an incident angle θ0.

摘要翻译： 公开了一种用于估计在存在直接波的Rician衰落环境中的移动台的速度的方法。 蜂窝移动通信环境包括两个环境，其中存在直接波的Rician衰落环境和不存在直接波的瑞利衰落环境。 通常，用于估计移动台的速度的许多方法在瑞利衰落环境中是已知的。 然而，在存在直接波的Rician衰落环境中，由于难以估计Rician系数K和入射角θ0，在估计移动台的速度时出现许多错误。 根据本发明，提供了一种方法，其中即使没有直接获得Rician系数K和入射角θ0，通过获得移动台的最大多普勒频率来估计移动台的速度，大多数地消除了误差。