公开(公告)号：US07394793B2

公开(公告)日：2008-07-01

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： H04B7/216

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。

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。

公开(公告)号：US07660607B2

公开(公告)日：2010-02-09

申请号：US11268893

申请日：2005-11-08

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

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

IPC分类号： H04M1/00 ,  H04B1/00 ,  H04B7/00 ,  H04J11/00

CPC分类号： H04L1/0625 ,  H04B7/0417 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0643 ,  H04L1/0662 ,  H04L1/0668 ,  H04L1/0687

摘要： Disclosed is a method for using various multiple antenna schemes in a baseband wireless access system is provided. According to the method, a downlink MAP message is constructed in order to support various multiple antenna schemes based on a multiple-input multiple output (MIMO), which is one of the multiple antenna schemes, so that compatibility with exiting MIMO technology having no MIMO feedback can be achieved and overhead occurring in transmission of an MAP information element can be reduced. Further, it is possible to efficiently support spatial multiplexing technology capable of transmitting multiple layers having different modulation and coding in a MIMO system.

摘要翻译： 公开了一种在基带无线接入系统中使用各种多天线方案的方法。 根据该方法，构建下行链路MAP消息以便支持基于作为多个天线方案之一的多输入多输出（MIMO）的各种多天线方案，从而与不具有MIMO的退出MIMO技术的兼容性 可以实现反馈并且可以减少在MAP信息元素的传输中发生的开销。 此外，可以有效地支持能够在MIMO系统中发送具有不同调制和编码的多个层的空间复用技术。

公开(公告)号：US20060203711A1

公开(公告)日：2006-09-14

申请号：US11369723

申请日：2006-03-07

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

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

IPC分类号： H04J11/00

CPC分类号： H04L1/0668 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/0048

摘要： A method of mapping Space-Time Coding (STC) data to subcarriers in a broadband wireless communication system using multiple antennas is provided. Transmission symbols are encoded according to a predetermined space-time coding matrix and the coded data symbols are mapped to time-space-subcarriers according to a mapping rule determined by the space-time coding matrix.

摘要翻译： 提供了一种使用多个天线在宽带无线通信系统中将空时编码（STC）数据映射到子载波的方法。 传输符号根据预定的空时编码矩阵进行编码，编码后的数据符号根据由时空编码矩阵确定的映射规则映射到时空子载波。

公开(公告)号：US20060176803A1

公开(公告)日：2006-08-10

申请号：US11329615

申请日：2006-01-11

申请人： Jeong-Tae Oh ,  Won-Il Roh ,  Kyun-Byoung Ko ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Chan-Byoung Chae ,  Hong-Sil Jeong ,  Sung-Ryul Yun ,  Myung-Kwang Byun

发明人： Jeong-Tae Oh ,  Won-Il Roh ,  Kyun-Byoung Ko ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Chan-Byoung Chae ,  Hong-Sil Jeong ,  Sung-Ryul Yun ,  Myung-Kwang Byun

IPC分类号： H04J11/00

CPC分类号： H04L1/0058 ,  H04L1/0025 ,  H04L1/0073 ,  H04L5/0007 ,  H04L5/0046

摘要： An apparatus is provided for transmitting uplink fast feedback information in a wireless communication system. In the apparatus, a channel encoder generates uplink fast feedback information to transmit, and outputs 3-bit codewords being set according to the fast feedback information. A noncoherent modulator modulates transmission symbols corresponding to the codewords using a noncoherent modulation scheme, and allocates the modulated transmission symbols to each of subcarrier bundles. An inverse fast Fourier transform (IFFT) unit IFFT-processes a transmission signal comprised of the subcarrier bundles before transmission.

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。

公开(公告)号：US20050281221A1

公开(公告)日：2005-12-22

申请号：US11156786

申请日：2005-06-20

申请人： Won-Il Roh ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Ji-Ho Jang ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Pan-Yuh Joo

发明人： Won-Il Roh ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Ji-Ho Jang ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Pan-Yuh Joo

IPC分类号： H04L27/26 ,  H04B7/06 ,  H04B7/26 ,  H04L1/00 ,  H04L1/06 ,  H04W72/04 ,  H04Q7/00

CPC分类号： H04L1/0675 ,  H04B7/0689 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/023 ,  H04L5/1453 ,  H04L25/0248 ,  H04W72/04

摘要： A system and method for allocating an adaptive modulation and coding (AMC) subchannel in a communication system for transmitting and receiving data through at least one antenna. A receiver examines at least one channel received from a transmitter, selects antenna transmission mode based on the examined at least one channel, selects an optimum frequency band based on the selected mode, and sends feedback information including selection information to the transmitter. The transmitter receives the feedback information from the receiver and allocates a frequency band to the receiver according to the received feedback information.

摘要翻译： 一种用于在用于通过至少一个天线发送和接收数据的通信系统中分配自适应调制和编码（AMC）子信道的系统和方法。 接收机检查从发射机接收的至少一个信道，基于所检查的至少一个信道选择天线发射模式，基于所选择的模式选择最佳频带，并向发射机发送包括选择信息的反馈信息。 发射机从接收机接收反馈信息，并根据收到的反馈信息向接收机分配频带。

公开(公告)号：US07826344B2

公开(公告)日：2010-11-02

申请号：US11176930

申请日：2005-07-07

申请人： Jeong-Tae Oh ,  Won-Il Roh ,  Kyun-Byoung Ko ,  Seung-Joo Maeng ,  Jae-Ho Jeon ,  Pan-Yuh Joo ,  Chan-Byoung Chae ,  Hong-Sil Jeong ,  Sung-Ryul Yun

发明人： Jeong-Tae Oh ,  Won-Il Roh ,  Kyun-Byoung Ko ,  Seung-Joo Maeng ,  Jae-Ho Jeon ,  Pan-Yuh Joo ,  Chan-Byoung Chae ,  Hong-Sil Jeong ,  Sung-Ryul Yun

IPC分类号： H04J11/00 ,  H04K1/10

CPC分类号： H04B7/0613 ,  H04L1/0066 ,  H04L1/007 ,  H04L1/0071 ,  H04L1/0668 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0226

摘要： A method and system for transmitting reference signals in a BWA communication system using a first transmit antenna, a second transmit antenna, and a plurality of sub-carriers. Each of the sub-carriers occupies a sub-frequency domain. In the method, reference signals for identifying a first transmit antenna are transmitted through a second predetermined number of sub-carriers in a first mini sub-channel transmitted through the first transmit antenna and occupied by a predetermined time domain and sub-frequency domains of a first predetermined number of sub-carriers, and reference signals for identifying a second transmit antenna are transmitted through the second predetermined number of the sub-carriers in a second mini sub-channel transmitted through the second transmit antenna and occupied by the time domain and the sub-frequency domains of the first predetermined number of sub-carriers.

摘要翻译： 一种使用第一发射天线，第二发射天线和多个子载波在BWA通信系统中发送参考信号的方法和系统。 每个子载波占用一个子频域。 在该方法中，用于识别第一发射天线的参考信号通过第一预定数量的子载波在通过第一发射天线发送并由预定时域占据的第一小型子信道中传输， 第一预定数量的子载波和用于识别第二发射天线的参考信号通过第二预定数量的子载波在通过第二发射天线发射并被时域占用的第二小型子信道中发送，并且 第一预定数量的副载波的子频域。

公开(公告)号：US07590045B2

公开(公告)日：2009-09-15

申请号：US11329615

申请日：2006-01-11

申请人： Jeong-Tae Oh ,  Won-Il Roh ,  Kyun-Byoung Ko ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Chan-Byoung Chae ,  Hong-Sil Jeong ,  Sung-Ryul Yun ,  Myung-Kwang Byun

发明人： Jeong-Tae Oh ,  Won-Il Roh ,  Kyun-Byoung Ko ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Chan-Byoung Chae ,  Hong-Sil Jeong ,  Sung-Ryul Yun ,  Myung-Kwang Byun

IPC分类号： H04J11/00

CPC分类号： H04L1/0058 ,  H04L1/0025 ,  H04L1/0073 ,  H04L5/0007 ,  H04L5/0046

摘要： An apparatus is provided for transmitting uplink fast feedback information in a wireless communication system. In the apparatus, a channel encoder generates uplink fast feedback information to transmit, and outputs 3-bit codewords being set according to the fast feedback information. A noncoherent modulator modulates transmission symbols corresponding to the codewords using a noncoherent modulation scheme, and allocates the modulated transmission symbols to each of subcarrier bundles. An inverse fast Fourier transform (IFFT) unit IFFT-processes a transmission signal comprised of the subcarrier bundles before transmission.

摘要翻译： 提供一种在无线通信系统中发送上行快速反馈信息的装置。 在该装置中，信道编码器生成上行快速反馈信息以进行发送，并输出根据快速反馈信息设置的3位码字。 非相干调制器使用非相干调制方案来调制对应于码字的传输符号，并且将调制的传输符号分配给每个子载波束。 在快速傅里叶逆变换（IFFT）单元IFFT处理在发送之前由子载波束组成的发送信号。

公开(公告)号：US20060268776A1

公开(公告)日：2006-11-30

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： H04Q7/00

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。 调查限制号码使用第 用户组合的容量来设定。 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。