公开(公告)号：US07333549B2

公开(公告)日：2008-02-19

申请号：US10756073

申请日：2004-01-12

申请人： Jong-Ho Lee ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam ,  Do-Young Kwak ,  Jae-Choong Han ,  Seong-Cheol Kim

发明人： Jong-Ho Lee ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Seung-Hoon Nam ,  Do-Young Kwak ,  Jae-Choong Han ,  Seong-Cheol Kim

IPC分类号： H04L27/28

CPC分类号： H04L25/0236 ,  H04L1/0618 ,  H04L25/0212 ,  H04L27/2649

摘要： A apparatus and method for estimating a sequence of transmitted quadrature amplitude modulation (QAM)-modulated signals and space-time block coded signals using an optimal expectation-maximization (EM)-based iterative estimation algorithm in a multiple-input and multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) mobile communication system. An initial sequence estimation value is produced on the basis of a predetermined initial value using a pilot sub-carrier contained in each of OFDM signals received by a receiving side. A normalized value of a received signal on a channel-by-channel basis is produced by a predetermined equation using orthogonality between the OFDM signals received by the receiving side. At least one subsequent sequence estimation value is produced using the initial sequence estimation value and the normalized value of the received signal on the channel-by-channel basis. If the subsequent sequence estimation value converges to a constant value after an operation of producing the subsequent sequence estimation value is iterated the predetermined number of times, the converged subsequent sequence estimation value is designated as a final sequence estimation value.

摘要翻译： 一种用于在多输入和多输出中使用最佳期望最大化（EM）的迭代估计算法来估计发送的正交幅度调制（QAM）调制信号和时空块编码信号的序列的装置和方法 MIMO） - 正交频分复用（OFDM）移动通信系统。 使用包含在由接收侧接收的每个OFDM信号中的导频子载波，基于预定初始值产生初始序列估计值。 通过使用由接收侧接收的OFDM信号之间的正交性的预定方程式，在逐个信道的基础上产生接收信号的归一化值。 使用初始序列估计值和逐个信道的接收信号的归一化值来产生至少一个后续序列估计值。 如果后续序列估计值在产生后续序列估计值的操作被迭代预定次数之后收敛到常数值，则将收敛后续序列估计值指定为最终序列估计值。

公开(公告)号：US20070064830A1

公开(公告)日：2007-03-22

申请号：US11523278

申请日：2006-09-18

申请人： Soong-Yoon Choi ,  Gun-Chul Hwang ,  Chan-Byoung Chae ,  Seung-Hoon Nam

发明人： Soong-Yoon Choi ,  Gun-Chul Hwang ,  Chan-Byoung Chae ,  Seung-Hoon Nam

IPC分类号： H04L1/02

CPC分类号： H04L1/0656 ,  H04B7/063 ,  H04B7/0634 ,  H04B7/0689 ,  H04L25/0206 ,  H04L25/0224 ,  H04L27/2608

摘要： An apparatus and method for simultaneously providing service to users each having a different number of antennas in a multiple-antenna wireless communication system are provided. The communication method discloses a BS in a wireless communication system that services a first multiple antenna mode using X transmit antennas and a second multiple antenna mode using Y transmit antennas such that (Y>X), the BS determines an MS to be serviced in the second multiple antenna mode and receives a sounding signal from the MS. The BS estimates an uplink channel using the received sounding signal and acquires downlink channel values using estimated uplink channel values. Then the BS services the MS in the second multiple antenna mode using the downlink channel values.

摘要翻译： 提供了一种用于在多天线无线通信系统中同时向具有不同天数的用户提供服务的装置和方法。 该通信方法公开了使用X个发射天线来服务第一多天线模式的无线通信系统中的BS，以及使用Y个发射天线的第二多天线模式，使得（Y> X），BS确定要在 第二多天线模式并从MS接收探测信号。 BS使用接收到的探测信号估计上行链路信道，并且使用估计的上行链路信道值来获取下行链路信道值。 然后BS使用下行链路信道值在第二多天线模式中服务于MS。

公开(公告)号：US20060215784A1

公开(公告)日：2006-09-28

申请号：US11345717

申请日：2006-02-02

申请人： Seung-Hoon Nam ,  Chan-Soo Hwang ,  Jae-Hak Chung ,  Young-Ho Jung ,  Won-II Roh ,  Chan-Byoung Chae

发明人： Seung-Hoon Nam ,  Chan-Soo Hwang ,  Jae-Hak Chung ,  Young-Ho Jung ,  Won-II Roh ,  Chan-Byoung Chae

IPC分类号： H04B7/06

CPC分类号： H04B7/0689 ,  H04B7/0691 ,  H04B7/0871 ,  H04B7/0874 ,  H04L1/0071 ,  H04L1/06

摘要： A transmitter in a multiple input multiple output (MIMO) communication system is provided. The transmitter includes a multiplexer for multiplexing an input bit stream into a plurality of bit streams, and outputting the bit streams in parallel; a bit-order rearranger for reordering bits constituting the bit streams, which are output from the multiplexer in the same time period, and outputting the reordered bits as reordered bit streams; and a modulator for modulating the parallel reordered bit streams output from the bit-order rearranger according to their associated modulation schemes, and transmitting the modulated symbols via their associated antennas.

摘要翻译： 提供了一种多输入多输出（MIMO）通信系统中的发射机。 发射机包括多路复用器，用于将输入比特流复用成多个比特流，并且并行地输出比特流; 用于重新排序构成比特流的比特序列重排器，其在同一时间段内从多路复用器输出，并将重新排序的比特输出为重新排序的比特流; 以及调制器，用于根据它们相关联的调制方案来调制从位顺序重排器输出的并行重排序比特流，以及经由其相关天线发送调制符号。

公开(公告)号：US20060176859A1

公开(公告)日：2006-08-10

申请号：US11235039

申请日：2005-09-26

申请人： Kwang-Bok Lee ,  Hui-Won Je ,  Seung-Hoon Nam

发明人： Kwang-Bok Lee ,  Hui-Won Je ,  Seung-Hoon Nam

IPC分类号： H04B7/216

CPC分类号： H04B7/2628

摘要： Disclosed is a method and apparatus for transmitting data in a cellular communication system including at least one base station that communicates with a plurality of mobile stations through a given frequency band. The method and apparatus divides the frequency band into at least two subcarrier groups each including a plurality of subcarriers; allocates at least one subcarrier group to each mobile station, and changes the subcarrier group allocated to each mobile station according to a predetermined period; and codes data to be transmitted to each mobile station with a plurality of codes, and transmits modulation symbols obtained by performing inverse fast Fourier transform (IFFT) on a plurality of subcarriers of the allocated subcarrier group.

摘要翻译： 公开了一种用于在蜂窝通信系统中发送数据的方法和装置，该方法和装置包括至少一个与多个移动台通过给定频带进行通信的基站。 该方法和装置将频带划分成每个包括多个子载波的至少两个子载波组; 向每个移动台分配至少一个子载波组，并根据预定周期改变分配给每个移动台的子载波组; 并用多个码对每个移动站进行发送的数据，并且在所分配的子载波组的多个子载波上发送通过执行快速傅立叶逆变换（IFFT）获得的调制符号。

公开(公告)号：US20060153312A1

公开(公告)日：2006-07-13

申请号：US11328268

申请日：2006-01-09

申请人： Sung-Ryul Yun ,  Chan-Byhoung Chae ,  Hong-Sil Jeong ,  Won-II Roh ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Young-Ho Jung ,  Seung-Hoon Nam ,  Jae-Hak Chung

发明人： Sung-Ryul Yun ,  Chan-Byhoung Chae ,  Hong-Sil Jeong ,  Won-II Roh ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Young-Ho Jung ,  Seung-Hoon Nam ,  Jae-Hak Chung

IPC分类号： H04L1/02

CPC分类号： H04L1/0606 ,  H04L1/0643 ,  H04L27/2626

摘要： A Space-Time-Frequency Block Coding (STFBC) encoding apparatus and method for a wireless communication system are provided. In a transmitter using a plurality of transmit antennas, an encoder encodes an input symbol sequence according to a predetermined space-time coding matrix. An antenna circulator selects one of predetermined permutation matrices according to a predetermined formula and generates a plurality of symbol vectors by permuting the space-time coded symbols according to the selected permutation matrix.

摘要翻译： 提供了一种用于无线通信系统的空时频率块编码（STFBC）编码装置和方法。 在使用多个发射天线的发射机中，编码器根据预定的时空编码矩阵对输入符号序列进行编码。 天线循环器根据预定的公式选择一个预定的置换矩阵，并通过根据所选择的置换矩阵排列空时编码的符号来生成多个符号向量。

公开(公告)号：US20060107167A1

公开(公告)日：2006-05-18

申请号：US11280702

申请日：2005-11-16

申请人： Hong-Sil Jeong ,  Chan-Byoung Chae ,  Sung-Ryul Yun ,  Won-Il Roh ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Young-Ho Jung ,  Seung-Hoon Nam ,  Jae-Hak Chung

发明人： Hong-Sil Jeong ,  Chan-Byoung Chae ,  Sung-Ryul Yun ,  Won-Il Roh ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Young-Ho Jung ,  Seung-Hoon Nam ,  Jae-Hak Chung

IPC分类号： G08C25/02 ,  H04L1/18

CPC分类号： H04L1/0625 ,  H04B7/0667 ,  H04L1/0668 ,  H04L1/1819

摘要： An Automatic Repeat reQuest (ARQ) error correction transmitting apparatus and method in a multiple antenna system are provided. In the ARQ error correction apparatus, a serial-to-parallel converter converts serial input data to parallel data, a retransmission processor determines a permutation transmission mode with respect to an initial transmission mode, in response to a retransmission request fed back from a receiver, and an STBC encoder STBC-encodes the parallel data and transmits the STBC-coded data through the transmit antennas according to the permutation transmission mode.

摘要翻译： 提供了一种多天线系统中的自动重复请求（ARQ）纠错发送装置和方法。 在ARQ纠错装置中，串行 - 并行转换器将串行输入数据转换为并行数据，响应于从接收器反馈的重传请求，重传处理器确定关于初始传输模式的置换传输模式， 并且STBC编码器对并行数据进行STBC编码，并且根据置换传输模式通过发送天线发送STBC编码的数据。

公开(公告)号：US20060093061A1

公开(公告)日：2006-05-04

申请号：US11264308

申请日：2005-11-01

申请人： Chan-Byoung Chae ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Won-Il Roh ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Young-Ho Jung ,  Seung-Hoon Nam ,  Jae-Hak Chung

发明人： Chan-Byoung Chae ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Won-Il Roh ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Young-Ho Jung ,  Seung-Hoon Nam ,  Jae-Hak Chung

IPC分类号： H04L1/02

CPC分类号： H04B7/0669 ,  H04L1/0618

摘要： An space-time-frequency block coding (STFBC) apparatus for a transmitter with four Tx antennas is provided. An input symbol sequence is transmitted through the four Tx antennas in a predetermined method based on feedback information received from a receiver or a selected matrix with regularities, thereby improving the performance of an STFBC.

摘要翻译： 提供了一种用于具有四个Tx天线的发射机的时空频率块编码（STFBC）装置。 基于从接收器接收到的反馈信息或具有规律性的所选择的矩阵，以预定方法通过四个Tx天线发送输入符号序列，从而提高STFBC的性能。

公开(公告)号：US20060056539A1

公开(公告)日：2006-03-16

申请号：US11206563

申请日：2005-08-18

申请人： Seung-Hoon Nam ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Young-Ho Jung ,  Vahid Tarokh

发明人： Seung-Hoon Nam ,  Jae-Hak Chung ,  Chan-Soo Hwang ,  Young-Ho Jung ,  Vahid Tarokh

IPC分类号： H04B7/06

CPC分类号： H04L1/0668 ,  H04B7/0669 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0662

摘要： Disclosed is a differential space-time block coding apparatus with a high transmission rate in a wireless communication system employing multiple transmit antennas and a method thereof. The differential space-time block coding method includes the steps of, when elements of a transmission matrix B43v are transmitted in a predetermined block (a vth block) through a predetermined transmit antenna at a predetermined time, modulating a symbol Sv of inputted binary data to a symbol Sv+1, creating a matrix S44v+1 in a block (a (v+1)th block) following the predetermined block by substituting the modulated symbol for the matrix P44, and then, in order to perform a differential encoding function, multiplying the matrix B43v by the matrix S44v+1 so as to calculate a new matrix B43v+1 to be transmitted in the (v+1)th block.

摘要翻译： 公开了在采用多个发射天线的无线通信系统中具有高传输速率的差分时空块编码装置及其方法。 差分空时块编码方法包括以下步骤：当在预定块（av 0）中发送传输矩阵B V>的元素时， SUP>块）通过预定的发射天线在预定时间，将输入的二进制数据的符号S SUB调制到码元S + V + 1，创建矩阵S < 在块（a（v + 1）^{块的块（a（v + 1）块）中的SUB> 44 v + 1 然后，为了执行差分编码功能，将矩阵B v 乘以矩阵S 44， 以便计算要在第（v + 1）中发送的新的矩阵B v + 1 SUP> th 块。}