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    Method and apparatus for generating preambles in a broadband wireless communication system using multiple antennas
    1.
    发明授权
    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：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。

    Method and apparatus for generating preambles in a broadband wireless communication system using multiple antennas
    2.
    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 transmitting a sub-channel signal in a communication system using an orthogonal frequency division multiple access scheme
    4.
    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。

    Apparatus and method for controlling transmission power in communication systems using orthogonal frequency division multiple access scheme
    5.
    发明授权
    Apparatus and method for controlling transmission power in communication systems using orthogonal frequency division multiple access scheme 有权
    使用正交频分多址方案来控制通信系统中的发射功率的装置和方法

    公开(公告)号：US07412242B2

    公开(公告)日：2008-08-12

    申请号：US11106222

    申请日：2005-04-14

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

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

    IPC分类号： H04Q7/20

    CPC分类号： H04W52/42 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/006 ,  H04W16/12

    摘要： Disclosed is a method for controlling transmission power to be allocated to sub-carrier signals in a cellular communication system capable of dividing a frequency band into a plurality of sub-carrier bands and multiplexing the sub-carrier signals of the sub-carrier bands based on multiple frequency reuse factors. The method comprises the steps of determining a target Signal to Interference and Noise Ratio (SINR) of sub-carrier signals employing a first frequency reuse factor selected from the multiple frequency reuse factors; determining a weight of the sub-carrier signals employing the first frequency reuse factor and a weight of other sub-carrier signals employing frequency reuse factors other than the first frequency reuse factor corresponding to the target SINR; and applying the determined weights to the sub-carrier signals employing the first frequency reuse factor and the sub-carrier signals employing frequency reuse factors other than the first frequency reuse factor, thereby controlling the transmission power.

    摘要翻译： 公开了一种在蜂窝通信系统中控制分配给子载波信号的发送功率的方法，该蜂窝通信系统能够将频带划分成多个子载波频带，并且基于子载波频带的子载波信号进行复用 多频率复用因子。 该方法包括以下步骤：采用从多个频率复用因子中选择的第一频率复用因子确定子载波信号的目标信号与干扰和噪声比（SINR）; 使用第一频率复用因子的子载波信号的权重和使用除了与目标SINR相对应的第一频率复用因子之外的频率复用因子的其他子载波信号的权重; 以及使用所述第一频率重用因子的子载波信号和采用除了所述第一频率重用因子之外的频率复用因子的子载波信号来应用所​​确定的权重，由此控制所述发射功率。