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101 条记录 (耗时 0.026 秒)

    Method and apparatus for allocating subcarriers in a broadband wireless communication system using multiple carriers
    42.
    发明申请
    Method and apparatus for allocating subcarriers in a broadband wireless communication system using multiple carriers 审中-公开
    在使用多个载波的宽带无线通信系统中分配副载波的方法和装置

    公开(公告)号：US20050201476A1

    公开(公告)日：2005-09-15

    申请号：US11077855

    申请日：2005-03-11

    申请人： Jeong-Heon Kim ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng ,  In-Seok Hwang

    发明人： Jeong-Heon Kim ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng ,  In-Seok Hwang

    IPC分类号： H04L27/26 ,  H04K1/10

    CPC分类号： H04L5/0044 ,  H04L5/0055 ,  H04L5/0057

    摘要： A method and apparatus for efficiently allocating subcarriers for data and/or a control signal requiring frequency diversity within the same symbol and for data or a control signal which needs to be transmitted in a frequency band with successive subcarriers, so as to transmit the signals simultaneously, satisfying the different requirements of frequency diversity and successive subcarrier allocation. Therefore, signal interference is reduced for a data signal having a frequency diversity gain and requiring a high data rate or a signal interfered by other signals.

    摘要翻译： 一种用于有效地分配用于数据的子载波和/或需要相同符号内的频率分集的控制信号的方法和装置，以及需要在具有连续子载波的频带中发送的数据或控制信号，以便同时发射信号 满足频率分集和连续子载波分配的不同要求。 因此，对于具有频率分集增益并且需要高数据速率或被其他信号干扰的信号的数据信号，信号干扰减小。

    Method and apparatus for generating preambles in a broadband wireless communication system using multiple antennas
    43.
    发明申请
    Method and apparatus for generating preambles in a broadband wireless communication system using multiple antennas 有权
    在使用多个天线的宽带无线通信系统中产生前同步码的方法和装置

    公开(公告)号：US20050201334A1

    公开(公告)日：2005-09-15

    申请号：US11077853

    申请日：2005-03-11

    申请人： Won-Il Roh ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng

    发明人： Won-Il Roh ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng

    IPC分类号： H04Q7/00

    CPC分类号： H04L5/0048 ,  H04J13/0003 ,  H04J13/0048 ,  H04J13/18 ,  H04L5/0026 ,  H04L27/2613

    摘要： A preamble generation method and apparatus are provided for improving transmit diversity by changing a preamble structure in a broadband wireless communication system using multiple antennas based on a multiple input multiple output (MIMO) scheme. First pilot tones associated with different antennas are selected. The first pilot tones are multiplied by different first Walsh codes. Second pilot tones associated with the same antenna are sequentially selected along a frequency axis. The second pilot tones are multiplied by a second Walsh code. Preambles are generated by assigning, to at least two symbol durations, output signals multiplied by the first and second Walsh codes. Consecutive pilot tones during each of the at least two symbol durations are spaced by one pilot tone, and code streams of the first and second Walsh codes are alternately multiplied by the pilot tones. The preamble structure has orthogonality between the antennas using frequency, time and code domains.

    摘要翻译： 提供了一种前导码生成方法和装置，用于通过基于多输入多输出（MIMO）方案通过使用多个天线改变宽带无线通信系统中的前导码结构来改善发送分集。 选择与不同天线相关联的第一导频音调。 第一导频音乘以不同的第一沃尔什码。 沿着频率轴依次选择与相同天线相关联的第二导频音。 第二个导频音乘以第二个沃尔什码。 通过将至少两个符号持续时间分配给乘以第一和第二沃尔什码的输出信号来产生前导码。 在至少两个符号持续时间中的每一个期间的连续导频音调间隔一个导频音，并且第一和第二沃尔什码的码流交替地乘以导频音。 前导码结构在使用频率，时间和码域的天线之间具有正交性。

    Apparatus and method for supporting frequency rearrangement in wireless communication system
    45.
    发明授权
    Apparatus and method for supporting frequency rearrangement in wireless communication system 有权
    在无线通信系统中支持频率重排的装置和方法

    公开(公告)号：US08451772B2

    公开(公告)日：2013-05-28

    申请号：US12658650

    申请日：2010-02-12

    申请人： Young-Ky Kim ,  Jae-Ho Jeon ,  Il-Whan Kim ,  Seung-Joo Maeng

    发明人： Young-Ky Kim ,  Jae-Ho Jeon ,  Il-Whan Kim ,  Seung-Joo Maeng

    IPC分类号： H04B7/212

    CPC分类号： H04W16/14 ,  H04W72/0453

    摘要： A base station includes a center frequency setting unit, a local oscillator, a baseband processor, and an RF processor. In the event of a frequency band change, the center frequency setting unit sets a center frequency of a use frequency channel to have a predetermined offset value with respect to a center frequency before the frequency band change. The local oscillator generates an LO frequency signal according to the center frequency set by the center frequency setting unit. The baseband processor generates a downlink baseband signal. The RF processor uses the LO frequency signal to convert the downlink baseband signal into an RF signal prior to transmission.

    摘要翻译： 基站包括中心频率设置单元，本地振荡器，基带处理器和RF处理器。 在频带变化的情况下，中心频率设定单元将频率信道的中心频率设定为相对于频带变化前的中心频率具有规定的偏移值。 本地振荡器根据由中心频率设定单元设定的中心频率产生LO频率信号。 基带处理器生成下行链路基带信号。 RF处理器使用LO频率信号在传输之前将下行链路基带信号转换成RF信号。

    User selection apparatus and method for SDMA in a MIMO system
    46.
    发明授权
    User selection apparatus and method for SDMA in a MIMO system 有权
    用于MIMO系统中的SDMA的用户选择装置和方法

    公开(公告)号：US07894858B2

    公开(公告)日：2011-02-22

    申请号：US11441371

    申请日：2006-05-25

    申请人： Kyun-Byoung Ko ,  Won-Il Roh ,  Jeong-Tae Oh ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Chan-Byoung Chae

    发明人： Kyun-Byoung Ko ,  Won-Il Roh ,  Jeong-Tae Oh ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Chan-Byoung Chae

    IPC分类号： H04M1/00

    CPC分类号： H04B7/0452 ,  H04W72/00 ,  H04W72/08

    摘要： An apparatus and method for selecting at least two users to be serviced in SDMA in an SDMA wireless communication system are provided. All users are ordered according to a predetermined rule and all possible user combinations each having at least two users are created from the ordered users. An investigation limit number is set using the capacity of a jth user combination. Or a total investigation number is reduced by comparing the interference-reflected SNR decrements of users with an investigation threshold. Therefore, the computation volume for selecting SDMA users is decreased.

    摘要翻译： 提供了一种在SDMA无线通信系统中选择要在SDMA中服务的至少两个用户的装置和方法。 根据预定规则对所有用户进行排序，并且从订购的用户创建每个具有至少两个用户的所有可能的用户组合。 使用第j个用户组合的容量设置调查限制号。 或者通过将用户的干扰反射SNR递减与调查阈值进行比较来减少总调查数。 因此，选择SDMA用户的计算量减少。

    Apparatus and method for detecting user in a communication system
    47.
    发明授权
    Apparatus and method for detecting user in a communication system 有权
    用于在通信系统中检测用户的装置和方法

    公开(公告)号：US07881410B2

    公开(公告)日：2011-02-01

    申请号：US11477040

    申请日：2006-06-28

    申请人： Jae-Hyok Lee ,  Evgeny Gontcharov ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    发明人： Jae-Hyok Lee ,  Evgeny Gontcharov ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    IPC分类号： H04L27/06

    CPC分类号： H04L5/023 ,  H04L27/2608

    摘要： Disclosed is a method for detecting a user in a communication system. The method includes selecting i ranging sub-carrier signals among k sub-carrier signals upon which a k-point fast Fourier transform (FFT), has been performed multiplying the i ranging sub-carrier signals by a ranging code, performing k-point inverse fast Fourier transform (IFFT) on the i ranging sub-carrier signals multiplied by the ranging code, and (k-i) 0s, detecting a power of each of the IFFT-processed k point signals, estimating a power of a desired received signal and a power of an interference signal by using powers of the k point signals according to a predetermined scheme, and detecting a user depending on the power of the desired received signal and the power of the interference signal.

    摘要翻译： 公开了一种用于在通信系统中检测用户的方法。 该方法包括：在已经执行了k点快速傅立叶变换（FFT）的k个子载波信号中选择i个测距子载波信号，其中i个测距子载波信号乘以测距码，执行k点反相 在i测距子载波信号乘以测距码和（ki）0s的快速傅里叶变换（IFFT）中，检测每个IFFT处理的k点信号的功率，估计所需接收信号的功率和 通过使用根据预定方案的k点信号的功率的干扰信号的功率，以及根据期望的接收信号的功率和干扰信号的功率来检测用户。

    Apparatus and method for transmitting a sub-channel signal in a communication system using an orthogonal frequency division multiple access scheme
    49.
    发明授权
    Apparatus and method for transmitting a sub-channel signal in a communication system using an orthogonal frequency division multiple access scheme 有权
    使用正交频分多址方案在通信系统中发送子信道信号的装置和方法

    公开(公告)号：US07715483B2

    公开(公告)日：2010-05-11

    申请号：US11077858

    申请日：2005-03-11

    申请人： Jae-Hee Cho ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Sang-Hoon Sung ,  Ji-Ho Jang ,  In-Seok Hwang ,  Hoon Huh ,  Jeong-Heon Kim ,  Seung-Joo Maeng

    发明人： Jae-Hee Cho ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Sang-Hoon Sung ,  Ji-Ho Jang ,  In-Seok Hwang ,  Hoon Huh ,  Jeong-Heon Kim ,  Seung-Joo Maeng

    IPC分类号： H04L27/28

    CPC分类号： H04L5/0037 ,  H04L1/0061 ,  H04L1/0071 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0044 ,  H04W16/12 ,  H04W28/16 ,  H04W74/00

    摘要： A method of allocating sub-channel signal interleaving patterns to BSs forming a wireless communication system that divides a frequency band into a plurality of sub-carriers and including a plurality of sub-channels, which are a set of predetermined adjacent sub-carriers. The method includes: creating a basic orthogonal sequence having a length identical to a number of the sub-carriers forming the sub-channel; creating a plurality of sequences having a same length as the basic orthogonal sequence by cyclic-shifting the basic orthogonal sequence a predetermined number of times or performing a modulo operation based on a number of the sub-carriers forming the sub-channel, after adding a predetermined offset to the cyclic-shifted basic orthogonal sequence; selecting a predetermined number of sequences corresponding to a number of the BSs from among the plurality of sequences; and allocating the selected sequences as the sub-channel signal interleaving patterns for the BSs.

    摘要翻译： 将子信道信号交织模式分配给形成无线通信系统的无线通信系统的方法，所述无线通信系统将频带划分成多个子载波，并且包括作为一组预定相邻子载波的多个子信道。 该方法包括：创建具有与形成子信道的子载波的数量相同的长度的基本正交序列; 通过将基本正交序列循环移位预定次数或者基于构成子信道的子载波的数量执行模运算来创建与基本正交序列具有相同长度的多个序列， 对循环移位的基本正交序列的预定偏移; 从所述多个序列中选择与所述BS的数量相对应的预定数量的序列; 并且将所选择的序列分配为用于BS的子信道信号交织模式。

    Method and apparatus for calculating log-likelihood ratio for decoding in a receiver for a mobile communication system
    50.
    发明授权
    Method and apparatus for calculating log-likelihood ratio for decoding in a receiver for a mobile communication system 有权
    用于计算用于移动通信系统的接收机中的解码的对数似然比的方法和装置

    公开(公告)号：US07483497B2

    公开(公告)日：2009-01-27

    申请号：US11212928

    申请日：2005-08-29

    申请人： Jeong-Tae Oh ,  Jae-Hyok Lee ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    发明人： Jeong-Tae Oh ,  Jae-Hyok Lee ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    IPC分类号： H04L27/22

    CPC分类号： H04L27/38 ,  H04L1/005 ,  H04L25/067

    摘要： A method and apparatus are provided for calculating a log-likelihood ratio (LLR) for decoding in a receiver for a mobile communication system, wherein the method and apparatus determine selection bits for distinguishing four quadrants in a constellation representing signal points of transmission symbols, determine domain bits for distinguishing the signal points in each domain of the four quadrants according to a modulation order of the transmission symbols, repeat an operation of dividing a received signal into a real component and an imaginary component according to the number of determined domain bits, calculate and origin-shift absolute values of the real component and the imaginary component, and calculate LLRs for the selection bits. Further, the method and apparatus can subsequently calculate LLRs for corresponding domain bits each time the origin-shifted received signal is received.

    摘要翻译： 提供一种用于计算用于移动通信系统的接收机中的解码的对数似然比（LLR）的方法和装置，其中所述方法和装置确定用于区分表示传输符号的信号点的星座中的四个象限的选择位，确定 用于根据传输符号的调制顺序区分四个象限的每个域中的信号点的域比特，根据确定的域比特的数量重复将接收信号划分为实数分量和虚分量的操作，计算 和原始分量和虚分量的原点偏移绝对值，并计算选择位的LLR。 此外，该方法和装置可以随后在每次接收到原点移位的接收信号时计算相应的域比特的LLR。