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    Apparatus and method for cell acquisition and downlink synchronization acquisition in a wireless communication system
    1.
    发明授权
    Apparatus and method for cell acquisition and downlink synchronization acquisition in a wireless communication system 有权
    在无线通信系统中用于小区获取和下行同步采集的装置和方法

    公开(公告)号：US07561628B2

    公开(公告)日：2009-07-14

    申请号：US11248739

    申请日：2005-10-12

    申请人： Sang-Hoon Sung ,  Chung-Ryul Chang ,  Soon-Young Yoon ,  Jae-Hee Cho ,  In-Seok Hwang ,  Hoon Huh

    发明人： Sang-Hoon Sung ,  Chung-Ryul Chang ,  Soon-Young Yoon ,  Jae-Hee Cho ,  In-Seok Hwang ,  Hoon Huh

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2613 ,  H04L5/023 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2684

    摘要： An apparatus and method for cell acquisition and downlink synchronization acquisition in an OFDMA wireless communication system are provided. In an SS apparatus in a broadband wireless communication system, a preamble subcarrier acquirer extracts subcarrier values having a preamble code from an FFT signal. A multiplier code-demodulates the subcarrier values by multiplying the subcarrier values by a preamble code. A correlator calculates a plurality of differential correlations in the code-demodulated signal. An IFFT processor IFFT-processes the differential correlations by mapping the differential correlations to subcarriers. A maximum value detector detects a maximum value from the IFFT signal and calculates a timing offset using an IFFT output index having the maximum value.

    摘要翻译： 提供了一种在OFDMA无线通信系统中用于小区获取和下行链路同步捕获的装置和方法。 在宽带无线通信系统的SS装置中，前导子载波采集器从FFT信号中提取具有前导码的子载波值。 乘法器通过将子载波值乘以前导码来解码副载波值。 相关器在码解调信号中计算多个差分相关。 IFFT处理器IFFT通过将差分相关映射到子载波来处理差分相关。 最大值检测器从IFFT信号检测最大值，并使用具有最大值的IFFT输出索引来计算定时偏移。

    Apparatus and method for detecting ranging signal in an orthogonal frequency division multiple access mobile communication system
    3.
    发明授权
    Apparatus and method for detecting ranging signal in an orthogonal frequency division multiple access mobile communication system 失效
    在正交频分多址移动通信系统中检测测距信号的装置和方法

    公开(公告)号：US07564909B2

    公开(公告)日：2009-07-21

    申请号：US11249065

    申请日：2005-10-12

    申请人： Sang-Hoon Sung ,  In-Seok Hwang ,  Soon-Young Yoon ,  Chung-Ryul Chang ,  Jae-Hee Cho ,  Hoon Huh

    发明人： Sang-Hoon Sung ,  In-Seok Hwang ,  Soon-Young Yoon ,  Chung-Ryul Chang ,  Jae-Hee Cho ,  Hoon Huh

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2655 ,  H04L5/023

    摘要： An apparatus and method for receiving a ranging signal in an OFDMA mobile communication system are provided. The ranging signal receiving apparatus including, a ranging subchannel extractor for extracting subcarrier values with a ranging signal from a (FFT) signal; a plurality of multipliers for code-demodulating the sub-carrier values by multiplying them by a plurality of ranging codes; each of a plurality of correlators for calculating a plurality of differential correlations in a code-demodulated signal received from a corresponding multiplier; each of a plurality of inverse fast Fourier transform (IFFT) processors for IFFT-processing differential correlations received from a corresponding correlator by mapping the differential correlations to predetermined subcarriers and each of a plurality of maximum value detectors for detecting a maximum value in an IFFT signal received from a corresponding IFFT processor and calculating a timing offset using an IFFT output index having the maximum value.

    摘要翻译： 提供了一种用于在OFDMA移动通信系统中接收测距信号的装置和方法。 测距信号接收装置包括：测距子信道提取器，用于从（FFT）信号中提取测距信号来提取子载波值; 多个乘法器，用于通过将它们乘以多个测距码来对所述子载波值进行解码; 多个相关器中的每一个，用于计算从相应的乘法器接收的码解调信号中的多个差分相关; 通过将差分相关映射到预定子载波并且用于检测IFFT信号中的最大值的多个最大值检测器中的每一个，用于IFFT处理差分相关的多个快速傅里叶逆变换（IFFT）处理器中的每一个 从相应的IFFT处理器接收并使用具有最大值的IFFT输出索引来计算定时偏移。

    Apparatus and method for supporting hybrid automatic repeat request in a broadband wireless communication system
    7.
    发明授权
    Apparatus and method for supporting hybrid automatic repeat request in a broadband wireless communication system 有权
    在宽带无线通信系统中支持混合自动重传请求的装置和方法

    公开(公告)号：US08116273B2

    公开(公告)日：2012-02-14

    申请号：US12383651

    申请日：2009-03-26

    申请人： Jae-Hee Cho ,  Si-Hyun Park ,  Soon-Young Yoon ,  Yong-Seok Kim ,  Chung-Ryul Chang

    发明人： Jae-Hee Cho ,  Si-Hyun Park ,  Soon-Young Yoon ,  Yong-Seok Kim ,  Chung-Ryul Chang

    IPC分类号： H04W4/00

    CPC分类号： H04L1/1893 ,  H04L1/0071 ,  H04L5/0007 ,  H04L5/0044

    摘要： A broadband wireless communication system using a plurality of Frequency Allocations (FAs) is provided. A method for packet transmission of a packet of a transmitting end includes dividing one encoded packet into a plurality of parts, mapping a plurality the plurality of parts of the packet to the FAs through the plurality of different FAs transmission, when a re-transmission request is received, re-mapping the plurality of parts of the packet to the FAs such that at least one of the at least one of the plurality of parts is re-mapped to an FA that is different than an FA previously mapped thereto. Retransmitting the encoded packet by at least one of a number of subunits.

    摘要翻译： 提供了使用多个频率分配（FA）的宽带无线通信系统。 一种用于发送端的分组的分组传输的方法包括：将一个已编码的分组划分为多个部分，当重发送请求时，通过多个不同的FA传输将分组的多个部分映射到FA 被重新映射到分组的多个部分到FA，使得多个部分中的至少一个部分中的至少一个重新映射到与先前映射到其的FA不同的FA。 通过多个子单元中的至少一个重新发送编码的分组。

    Apparatus and method for supporting hybrid automatic repeat request in a broadband wireless communication system
    8.
    发明申请
    Apparatus and method for supporting hybrid automatic repeat request in a broadband wireless communication system 有权
    在宽带无线通信系统中支持混合自动重传请求的装置和方法

    公开(公告)号：US20090245096A1

    公开(公告)日：2009-10-01

    申请号：US12383651

    申请日：2009-03-26

    申请人： Jae-Hee Cho ,  Si-Hyun Park ,  Soon-Young Yoon ,  Yong-Seok Kim ,  Chung-Ryul Chang

    发明人： Jae-Hee Cho ,  Si-Hyun Park ,  Soon-Young Yoon ,  Yong-Seok Kim ,  Chung-Ryul Chang

    IPC分类号： G06F11/00

    CPC分类号： H04L1/1893 ,  H04L1/0071 ,  H04L5/0007 ,  H04L5/0044

    摘要： A broadband wireless communication system using a plurality of Frequency Allocations (FAs) is provided. A method for packet transmission of a packet of a transmitting end includes dividing one encoded packet into a plurality of parts, mapping a plurality the plurality of parts of the packet to the FAs through the plurality of different FAs transmission, when a re-transmission request is received, re-mapping the plurality of parts of the packet to the FAs such that at least one of the at least one of the plurality of parts is re-mapped to an FA that is different than an FA previously mapped thereto. Retransmitting the encoded packet by at least one of a number of subunits.

    摘要翻译： 提供了使用多个频率分配（FA）的宽带无线通信系统。 一种用于发送端的分组的分组传输的方法包括：将一个已编码的分组划分为多个部分，当重发送请求时，通过多个不同的FA传输将分组的多个部分映射到FA 被重新映射到分组的多个部分到FA，使得多个部分中的至少一个部分中的至少一个重新映射到与先前映射到其的FA不同的FA。 通过多个子单元中的至少一个重新发送编码的分组。

    APPARATUS AND METHOD FOR CANCELING INTERFERENCE IN BROADBAND WIRELESS ACCESS SYSTEM
    10.
    发明申请
    APPARATUS AND METHOD FOR CANCELING INTERFERENCE IN BROADBAND WIRELESS ACCESS SYSTEM 有权
    在宽带无线接入系统中取消干扰的装置和方法

    公开(公告)号：US20080130803A1

    公开(公告)日：2008-06-05

    申请号：US11942465

    申请日：2007-11-19

    申请人： Chung-Ryul Chang ,  Keun-Chul Hwang ,  Soon-Young Yoon ,  June Moon

    发明人： Chung-Ryul Chang ,  Keun-Chul Hwang ,  Soon-Young Yoon ,  June Moon

    IPC分类号： H04B1/10

    CPC分类号： H04B7/0413 ,  H04B7/0854 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0035 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/0242 ,  H04L27/2613 ,  H04L27/2647

    摘要： Provided are an apparatus and method for canceling interference in a Broadband Wireless Access (BWA) system. The method includes estimating channel coefficient vectors of a plurality of Mobile Stations (MSs) using the same resource; computing a correlation matrix by subtracting a channel coefficient vector of a corresponding MS from a specific tone input vector within the same resource and by auto-correlating the subtracted vector; canceling interference from the data-tone input vector and the channel matrix by using the correlation matrix; and estimating a transmission symbol for each MS by performing Multiple Input Multiple Output (MIMO) detection by using the interference-cancelled input vector and the interference-cancelled channel matrix.

    摘要翻译： 提供了一种用于消除宽带无线接入（BWA）系统中的干扰的装置和方法。 该方法包括使用相同的资源来估计多个移动站（MS）的信道系数向量; 通过从相同资源内的特定音调输入向量中减去对应的MS的信道系数向量并通过对相减的向量进行自相关来计算相关矩阵; 通过使用相关矩阵来消除数据音输入向量和信道矩阵的干扰; 以及通过使用干扰消除输入向量和干扰消除信道矩阵执行多输入多输出（MIMO）检测来估计每个MS的传输符号。