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13 条记录 (耗时 0.023 秒)

    Interleaving method in OFDM system
    1.
    发明授权
    Interleaving method in OFDM system 有权
    OFDM系统中的交织方法

    公开(公告)号：US07797617B2

    公开(公告)日：2010-09-14

    申请号：US11268473

    申请日：2005-11-08

    申请人： Jeong-sang Lee ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim

    发明人： Jeong-sang Lee ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim

    IPC分类号： H03M13/03

    CPC分类号： H04L1/0041 ,  H04L1/0071 ,  H04L27/2608

    摘要： Provided is an interleaving method that can reduce error occurring during transmission at a receiving end in an Orthogonal Frequency Division Multiplexing (OFDM) system. According to the interleaving method, transmitted data bits are recorded in an interleaving memory; and the stored data bits are read based on a predetermined sequence to perform symbol interleaving, tone interleaving and cyclic shift simultaneously. Also, to simplify the logic of the OFDM system, the data bits transmitted from an interleaver go through Fast Fourier Transform (FFT) mapping, and the FFT mapped data bits are modulated. In short, the logic can be simplified by performing FFT mapping followed by modulation.

    摘要翻译： 提供了一种可以减少在正交频分复用（OFDM）系统中的接收端发送期间发生的错误的交织方法。 根据交织方法，发送的数据位被记录在交织存储器中; 并且基于预定的顺序读取存储的数据位，以同时进行符号交织，色调交织和循环移位。 此外，为了简化OFDM系统的逻辑，从交织器发送的数据位通过快速傅里叶变换（FFT）映射，并且对FFT映射的数据位进行调制。 简而言之，可以通过执行FFT映射并进行调制来简化逻辑。

    FFT apparatus for high data rate and method thereof
    2.
    发明申请
    FFT apparatus for high data rate and method thereof 有权
    用于高数据速率的FFT装置及其方法

    公开(公告)号：US20060129620A1

    公开(公告)日：2006-06-15

    申请号：US11233138

    申请日：2005-09-23

    申请人： Jeong-sang Lee ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim

    发明人： Jeong-sang Lee ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim

    IPC分类号： G06F17/14

    CPC分类号： G06F17/142

    摘要： An FFT apparatus for quickly processing input signals and method thereof is disclosed. In performing the FFT for processing N input signals, four N/4-point FFT units implemented by radix-2 single-path delay feedback (R2SDF) units performs the FFT with respect to the input signals, and a radix-4 computation unit performs a radix-4 computation with respect to the signals transferred from the N/4-point FFT units. Accordingly, the input signals are processed in parallel through the N/4-point FFT units, and thus a quick process of the input signals can be performed.

    摘要翻译： 公开了一种用于快速处理输入信号的FFT装置及其方法。 在执行用于处理N个输入信号的FFT时，由基数2单路延迟反馈（R2SDF）单元实现的四个N / 4点FFT单元相对于输入信号执行FFT，并且基数-4计算单元执行 相对于从N / 4点FFT单元传送的信号的基数-4计算。 因此，输入信号通过N / 4点FFT单元并行处理，因此可以执行输入信号的快速处理。

    FFT apparatus for high data rate and method thereof
    3.
    发明授权
    FFT apparatus for high data rate and method thereof 有权
    用于高数据速率的FFT装置及其方法

    公开(公告)号：US07680870B2

    公开(公告)日：2010-03-16

    申请号：US11233138

    申请日：2005-09-23

    申请人： Jeong-sang Lee ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim

    发明人： Jeong-sang Lee ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim

    IPC分类号： G06F17/14

    CPC分类号： G06F17/142

    摘要： An FFT apparatus for quickly processing input signals and method thereof is disclosed. In performing the FFT for processing N input signals, four N/4-point FFT units implemented by radix-2 single-path delay feedback (R2SDF) units performs the FFT with respect to the input signals, and a radix-4 computation unit performs a radix-4 computation with respect to the signals transferred from the N/4-point FFT units. Accordingly, the input signals are processed in parallel through the N/4-point FFT units, and thus a quick process of the input signals can be performed.

    摘要翻译： 公开了一种用于快速处理输入信号的FFT装置及其方法。 在执行用于处理N个输入信号的FFT时，由基数2单路延迟反馈（R2SDF）单元实现的四个N / 4点FFT单元相对于输入信号执行FFT，并且基数-4计算单元执行 相对于从N / 4点FFT单元传送的信号的基数-4计算。 因此，输入信号通过N / 4点FFT单元并行处理，因此可以执行输入信号的快速处理。

    Interleaving method in OFDM system
    4.
    发明申请
    Interleaving method in OFDM system 有权
    OFDM系统中的交织方法

    公开(公告)号：US20060164973A1

    公开(公告)日：2006-07-27

    申请号：US11268473

    申请日：2005-11-08

    申请人： Jeong-sang Lee ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim

    发明人： Jeong-sang Lee ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim

    IPC分类号： H04J11/00

    CPC分类号： H04L1/0041 ,  H04L1/0071 ,  H04L27/2608

    摘要： Provided is an interleaving method that can reduce error occurring during transmission at a receiving end in an Orthogonal Frequency Division Multiplexing (OFDM) system. According to the interleaving method, transmitted data bits are recorded in an interleaving memory; and the stored data bits are read based on a predetermined sequence to perform symbol interleaving, tone interleaving and cyclic shift simultaneously. Also, to simplify the logic of the OFDM system, the data bits transmitted from an interleaver go through Fast Fourier Transform (FFT) mapping, and the FFT mapped data bits are modulated. In short, the logic can be simplified by performing FFT mapping followed by modulation.

    摘要翻译： 提供了一种可以减少在正交频分复用（OFDM）系统中的接收端发送期间发生的错误的交织方法。 根据交织方法，发送的数据位被记录在交织存储器中; 并且基于预定的顺序读取存储的数据位，以同时进行符号交织，色调交织和循环移位。 此外，为了简化OFDM系统的逻辑，从交织器发送的数据位通过快速傅里叶变换（FFT）映射，并且对FFT映射的数据位进行调制。 简而言之，可以通过执行FFT映射并进行调制来简化逻辑。

    System for wireless resource assignment in multiband OFDM
    6.
    发明申请
    System for wireless resource assignment in multiband OFDM 审中-公开
    多频段OFDM中的无线资源分配系统

    公开(公告)号：US20060083326A1

    公开(公告)日：2006-04-20

    申请号：US11250381

    申请日：2005-10-17

    申请人： Jae-ho Roh ,  Jae-hyun Koo ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-Joong Rim

    发明人： Jae-ho Roh ,  Jae-hyun Koo ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-Joong Rim

    IPC分类号： H04K1/10

    CPC分类号： H04L1/0071 ,  H04L1/04 ,  H04L1/08 ,  H04L5/023

    摘要： A multi-band orthogonal frequency division multiplexing (OFDM) system transmits the same symbol at least two times, and a receiving end can receive transmission data from a transmitting end accurately even when an error occurs from a wireless resource used by the multi-band OFDM system. To this end, the multi-band OFDM system has a transmitting end which selects one among at least three symbols being repetitively transmitted at least two times, and transmits the selected symbol by using different wireless resources so that the selected symbol is not consecutively transmitted, and a receiving end which receives the symbols from the transmitting end.

    摘要翻译： 多频带正交频分复用（OFDM）系统至少发送相同的符号两次，并且接收端可以准确地从发送端接收发送数据，即使当从多频带OFDM使用的无线资源发生错误时 系统。 为此，多频带OFDM系统具有从至少三个符号中选择至少两次重复发送的发送端，并且通过使用不同的无线资源发送所选择的符号，使得所选择的符号不被连续发送， 以及从发送端接收符号的接收端。

    Matched filter and cross correlation method
    7.
    发明申请
    Matched filter and cross correlation method 审中-公开
    匹配滤波器和互相关法

    公开(公告)号：US20060072689A1

    公开(公告)日：2006-04-06

    申请号：US11236596

    申请日：2005-09-28

    申请人： Yun-young Kim ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim ,  Jae-ho Roh ,  Jae-hyun Koo

    发明人： Yun-young Kim ,  Sung-hyun Chung ,  Jae-min Ahn ,  Min-joong Rim ,  Jae-ho Roh ,  Jae-hyun Koo

    IPC分类号： H04L27/06

    CPC分类号： H03H17/0254 ,  H04B1/7093 ,  H04B1/71637

    摘要： Disclosed is a matched filter and a method for performing cross correlation thereof. The matched filter includes a demultiplexer for demultiplexing an input sample signal into a predetermined number of signals; and cross correlators that perform a cross correlation of each of the demultiplexed sample signals with a predetermined sequence. Therefore, when the matched filter of the present invention is applied to a UWB system having a high sampling rate, the cross correlation operation can be performed at a high rate simply by using low-rate multipliers.

    摘要翻译： 公开了一种匹配滤波器及其互相关的方法。 匹配滤波器包括用于将输入采样信号解复用为预定数量的信号的解复用器; 以及交叉相关器，其执行每个解复用的采样信号与预定序列的互相关。 因此，当将本发明的匹配滤波器应用于具有高采样率的UWB系统时，可以简单地通过使用低速率乘法器以高速率执行互相关运算。

    Method and apparatus for detecting minute oscillation and WiBro repeater having the same
    8.
    发明申请
    Method and apparatus for detecting minute oscillation and WiBro repeater having the same 失效
    用于检测微振荡的方法和装置以及具有该振荡的WiBro中继器

    公开(公告)号：US20070075709A1

    公开(公告)日：2007-04-05

    申请号：US11516399

    申请日：2006-09-06

    申请人： Sung-hyun Chung ,  Min-joong Rim ,  Hyun-uk Shin

    发明人： Sung-hyun Chung ,  Min-joong Rim ,  Hyun-uk Shin

    IPC分类号： G01R19/00 ,  G01R31/00

    CPC分类号： H04B7/15585

    摘要： Disclosed are a method and apparatus for detecting minute oscillation in a WiBro repeater, and the WiBro repeater having the same. The method of detecting minute oscillation in a WiBro repeater includes: calculating an autocorrelation value of an input signal inputted to the repeater; calculating energy of the input signal; calculating the amount of oscillation by dividing the autocorrelation value by the energy; and comparing the amount of oscillation with a predetermined threshold value to determine whether or not the minute oscillation occurs in the repeater.

    摘要翻译： 公开了一种用于检测WiBro中继器中的微小振荡的方法和装置，以及具有该WiBro中继器的WiBro中继器。 在WiBro中继器中检测微小振荡的方法包括：计算输入到中继器的输入信号的自相关值; 计算输入信号的能量; 通过将自相关值除以能量来计算振荡量; 以及将振荡量与预定阈值进行比较，以确定在中继器中是否发生微小振荡。

    Method and apparatus for measuring uplink data throughput in WiBro repeater
    9.
    发明申请
    Method and apparatus for measuring uplink data throughput in WiBro repeater 审中-公开
    用于测量WiBro中继器上行数据吞吐量的方法和装置

    公开(公告)号：US20070014254A1

    公开(公告)日：2007-01-18

    申请号：US11432786

    申请日：2006-05-11

    申请人： Sung-hyun Chung ,  Min-joong Rim ,  Mi-seon Jeong

    发明人： Sung-hyun Chung ,  Min-joong Rim ,  Mi-seon Jeong

    IPC分类号： H04B7/185

    CPC分类号： H04B17/345 ,  H04B17/327 ,  H04L43/50

    摘要： Disclosed is a method of measuring the throughput of uplink data in a WiBro repeater, the method including the operations of: (a) extracting a plurality of tiles from a predetermined number of symbols that are collected over a plurality of times by performing frequency conversion on the uplink data; (b) calculating power values for the respective extracted tiles; (c) calculating an average noise value from the calculated power values; (d) calculating a threshold value, which is used to identify noise, from the average noise value, and calculating the number of tiles having power values more than the threshold value; and (e) calculating the throughput by estimating based on the number of the tiles the number of subchannels carrying data.

    摘要翻译： 本发明公开了一种测量WiBro中继器中的上行数据吞吐量的方法，该方法包括以下操作的方法：（a）通过对多个片段进行频率转换，从多个符号中抽出多个片段， 上行数据; （b）计算各抽取瓦片的功率值; （c）从所计算的功率值计算平均噪声值; （d）从所述平均噪声值计算用于识别噪声的阈值，以及计算功率值大于所述阈值的瓦片的数量; 以及（e）通过基于瓦片的数量估计携带数据的子信道的数量来计算吞吐量。