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    APPARATUS AND METHOD FOR VARIABLE FAST FOURIER TRANSFORM
    1.
    发明申请
    APPARATUS AND METHOD FOR VARIABLE FAST FOURIER TRANSFORM 有权
    用于可变快速傅立叶变换的装置和方法

    公开(公告)号：US20100011046A1

    公开(公告)日：2010-01-14

    申请号：US12517781

    申请日：2007-06-18

    申请人： Young-Jin Moon ,  Hyun-Jae Kim ,  Ki-Seok Kim ,  Young-Il Kim

    发明人： Young-Jin Moon ,  Hyun-Jae Kim ,  Ki-Seok Kim ,  Young-Il Kim

    IPC分类号： G06F17/14

    CPC分类号： G06F17/142

    摘要： The present invention relates to an apparatus and method for variable fast Fourier transform. According to an embodiment of the present invention, two n-point fast Fourier transform (FFT) processors are used to generate two n-point FFT output data or one 2n-point FFT output data. The one 2n-point input data is alternately input to the two n-point FFT processors. Each of the two n-point FFT processors selects a twiddle factor for the n-point input data or the 2n-point input data and performs fast Fourier transform. A butterfly operation is performed on signals obtained by performing fast Fourier transform on the 2n-point input data signal, and the processed signals are aligned in an output order. According to this structure, it is possible to realize a fast Fourier transform hardware engine that selectively performs multi-frequency allocation in a base station system that supports the multi-frequency allocation.

    摘要翻译： 本发明涉及一种用于可变快速傅里叶变换的装置和方法。 根据本发明的实施例，使用两个n点快速傅里叶变换（FFT）处理器来产生两个n点FFT输出数据或一个2n点FFT输出数据。 一个2n点输入数据交替地输入到两个n点FFT处理器。 两个n点FFT处理器中的每一个为n点输入数据或2n点输入数据选择旋转因子，并执行快速傅里叶变换。 对通过对2n点输入数据信号执行快速傅里叶变换获得的信号执行蝶形运算，并且处理的信号以输出顺序对准。 根据该结构，能够实现在支持多频分配的基站系统中选择性地进行多频分配的快速傅里叶变换硬件引擎。

    Apparatus and method for variable fast fourier transform
    2.
    发明授权
    Apparatus and method for variable fast fourier transform 有权
    用于可变快速傅里叶变换的装置和方法

    公开(公告)号：US08510362B2

    公开(公告)日：2013-08-13

    申请号：US12517781

    申请日：2007-06-18

    申请人： Young-Jin Moon ,  Hyun-Jae Kim ,  Ki-Seok Kim ,  Young-II Kim

    发明人： Young-Jin Moon ,  Hyun-Jae Kim ,  Ki-Seok Kim ,  Young-II Kim

    IPC分类号： G06F17/14

    CPC分类号： G06F17/142

    摘要： The present invention relates to an apparatus and method for variable fast Fourier transform. According to an embodiment of the present invention, two n-point fast Fourier transform (FFT) processors are used to generate two n-point FFT output data or one 2n-point FFT output data. The one 2n-point input data is alternately input to the two n-point FFT processors. Each of the two n-point FFT processors selects a twiddle factor for the n-point input data or the 2n-point input data and performs fast Fourier transform. A butterfly operation is performed on signals obtained by performing fast Fourier transform on the 2n-point input data signal, and the processed signals are aligned in an output order. According to this structure, it is possible to realize a fast Fourier transform hardware engine that selectively performs multi-frequency allocation in a base station system that supports the multi-frequency allocation.

    摘要翻译： 本发明涉及一种用于可变快速傅里叶变换的装置和方法。 根据本发明的实施例，使用两个n点快速傅里叶变换（FFT）处理器来产生两个n点FFT输出数据或一个2n点FFT输出数据。 一个2n点输入数据交替地输入到两个n点FFT处理器。 两个n点FFT处理器中的每一个为n点输入数据或2n点输入数据选择旋转因子，并执行快速傅里叶变换。 对通过对2n点输入数据信号执行快速傅里叶变换获得的信号执行蝶形运算，并且处理的信号以输出顺序对准。 根据该结构，能够实现在支持多频分配的基站系统中选择性地进行多频分配的快速傅里叶变换硬件引擎。

    Apparatus and Method for Automatic Gain Control of Mobile Station in Ofdm System
    4.
    发明申请
    Apparatus and Method for Automatic Gain Control of Mobile Station in Ofdm System 有权
    OFDM系统中移动台自动增益控制的装置与方法

    公开(公告)号：US20080232518A1

    公开(公告)日：2008-09-25

    申请号：US12088262

    申请日：2006-09-29

    申请人： Ki-Seok Kim ,  Young-Il KIM

    发明人： Ki-Seok Kim ,  Young-Il KIM

    IPC分类号： H04L27/08

    CPC分类号： H04L27/2647 ,  H04L27/261 ,  H04L27/3809

    摘要： The present invention relates to an automatic gain control apparatus and method of a mobile station in an OFDM system. The present invention includes: identifying a preamble section and a data symbol section in a received frame signal; when a current symbol is the preamble section, measuring a power value of a preamble signal, comparing the measured power value of the preamble signal and a threshold value, and amplifying the received frame signal based on a predetermined gain value (gain=threshold−power value) according to a difference between the measured power value and the threshold value; when a data symbol section includes a pilot carrier, measuring an average power value of the pilot carrier in the data symbol when the data symbol section includes the pilot carrier, comparing the measured average power value of the pilot carrier and the threshold value, and amplifying the received frame signal based on a predetermined gain value (gain=threshold−pilot average power value) according to a difference; and when the data symbol section includes no pilot carrier, maintaining an existing gain, or performing an automatic gain control operation according to a gain estimated by using the pilot carrier during the data symbol section including the pilot carrier. Accordingly, the mobile station of the OFDM system that is robust to channel variation and various fading environments may be provided to efficiently perform the automatic gain control.

    摘要翻译： 本发明涉及OFDM系统中的移动台的自动增益控制装置和方法。 本发明包括：识别接收到的帧信号中的前导码部分和数据符号部分; 当当前符号是前导码部分时，测量前导码信号的功率值，比较所测量的前同步信号的功率值和阈值，并且基于预定的增益值（增益=阈值功率）来放大接收到的帧信号 值），根据测量的功率值和阈值之间的差; 当数据符号部分包括导频载波时，当数据符号部分包括导频载波时，测量数据符号中的导频载波的平均功率值，比较导频载波的测得的平均功率值和阈值， 根据差异，基于预定增益值（增益=阈值 - 导频平均功率值）接收的帧信号; 并且当数据符号部分不包括导频载波，维持现有增益时，或者在包括导频载波的数据符号部分期间根据通过使用导频载波估计的增益执行自动增益控制操作。 因此，可以提供对信道变化和各种衰落环境鲁棒的OFDM系统的移动站，以有效地执行自动增益控制。

    Apparatus and method for automatic gain control of mobile station in OFDM system
    5.
    发明授权
    Apparatus and method for automatic gain control of mobile station in OFDM system 有权
    OFDM系统中移动台自动增益控制的装置及方法

    公开(公告)号：US08194804B2

    公开(公告)日：2012-06-05

    申请号：US12088262

    申请日：2006-09-29

    申请人： Ki-Seok Kim ,  Young-Il Kim

    发明人： Ki-Seok Kim ,  Young-Il Kim

    IPC分类号： H04L27/08

    CPC分类号： H04L27/2647 ,  H04L27/261 ,  H04L27/3809

    摘要： An automatic gain control apparatus and method of a mobile station in an OFDM system are provided. The method includes identifying a preamble section and a data symbol section in a received frame signal; when a current symbol is the preamble section, measuring a power value of a preamble signal, comparing the measured power value of the preamble signal and a threshold value, and amplifying the received frame signal based on a predetermined gain; when a data symbol section includes a pilot carrier, measuring an average power value of the pilot carrier in the data symbol, comparing the measured average power value and the threshold value, and amplifying the received frame signal based on a predetermined gain; and when the data symbol section includes no pilot carrier, maintaining an existing gain, or performing an automatic gain control operation according to a gain estimated by using the pilot carrier during the data symbol section.

    摘要翻译： 提供了OFDM系统中的移动台的自动增益控制装置和方法。 该方法包括在接收到的帧信号中识别前导码部分和数据符号部分; 当当前符号是前导码部分时，测量前同步信号的功率值，比较前导信号的测量功率值和阈值，并根据预定增益放大接收到的帧信号; 当数据符号部分包括导频载波时，测量数据符号中的导频载波的平均功率值，比较测得的平均功率值和阈值，并根据预定增益放大接收到的帧信号; 并且当数据符号部分不包括导频载波，维持现有增益时，或者根据在数据符号部分期间使用导频载波估计的增益执行自动增益控制操作。

    LIGHT-EMITTING DIODE HAVING ZINC OXIDE NANORODS AND METHOD OF FABRICATING THE SAME
    6.
    发明申请
    LIGHT-EMITTING DIODE HAVING ZINC OXIDE NANORODS AND METHOD OF FABRICATING THE SAME 失效
    具有氧化锌纳米粒子的发光二极管及其制造方法

    公开(公告)号：US20110260191A1

    公开(公告)日：2011-10-27

    申请号：US13094338

    申请日：2011-04-26

    申请人： Ki-Seok Kim ,  Gun-Young Jung ,  Sang-Mook Kim ,  Mun-Seok Jeong ,  Hyun Jeong

    发明人： Ki-Seok Kim ,  Gun-Young Jung ,  Sang-Mook Kim ,  Mun-Seok Jeong ,  Hyun Jeong

    IPC分类号： H01L33/60 ,  H01L33/58 ,  B82Y99/00

    CPC分类号： B82Y40/00 ,  B82Y30/00 ,  H01L33/14 ,  H01L33/22

    摘要： The light extraction efficiency of a typical light-emitting diode (LED) is improved by incorporating one-dimensional ZnO nanorods. The light extraction efficiency is improved about 31% due to the waveguide effect of ZnO sub-microrods, compared to an LED without the nanorods. Other shapes of ZnO microrods and nanorods are produced using a simple non-catalytic wet chemical growth method at a low temperature on an indium-tin-oxide (ITO) top contact layer with no seed layer. The crystal morphology of a needle-like or flat top hexagonal structure and the density and size of ZnO microrods and nanorods are easily modified by controlling the pH value and growth time. The waveguide phenomenon in each ZnO rod is observed using confocal scanning electroluminescence microscopy (CSEM) and micro-electroluminescence spectra (MES).

    摘要翻译： 典型的发光二极管（LED）的光提取效率通过掺入一维ZnO纳米棒得到改善。 与没有纳米棒的LED相比，由于ZnO亚微米的波导效应，光提取效率提高了约31％。 使用简单的非催化湿化学生长法在不含种子层的铟锡氧化物（ITO）顶部接触层上，在低温下制备其他形状的ZnO微晶棒和纳米棒。 通过控制pH值和生长时间，可以容易地改变针状或平顶六边形结构的晶体形态以及ZnO微结构和纳米棒的密度和尺寸。 使用共聚焦扫描电致发光显微镜（CSEM）和微电致发光光谱（MES）观察每个ZnO棒中的波导现象。

    Light-emitting diode having zinc oxide nanorods and method of fabricating the same
    9.
    发明授权
    Light-emitting diode having zinc oxide nanorods and method of fabricating the same 失效
    具有氧化锌纳米棒的发光二极管及其制造方法

    公开(公告)号：US08614452B2

    公开(公告)日：2013-12-24

    申请号：US13094338

    申请日：2011-04-26

    申请人： Ki-Seok Kim ,  Gun-Young Jung ,  Sang-Mook Kim ,  Mun-Seok Jeong ,  Hyun Jeong

    发明人： Ki-Seok Kim ,  Gun-Young Jung ,  Sang-Mook Kim ,  Mun-Seok Jeong ,  Hyun Jeong

    IPC分类号： H01L33/00

    CPC分类号： B82Y40/00 ,  B82Y30/00 ,  H01L33/14 ,  H01L33/22

    摘要： The light extraction efficiency of a typical light-emitting diode (LED) is improved by incorporating one-dimensional ZnO nanorods. The light extraction efficiency is improved about 31% due to the waveguide effect of ZnO sub-microrods, compared to an LED without the nanorods. Other shapes of ZnO microrods and nanorods are produced using a simple non-catalytic wet chemical growth method at a low temperature on an indium-tin-oxide (ITO) top contact layer with no seed layer. The crystal morphology of a needle-like or flat top hexagonal structure and the density and size of ZnO microrods and nanorods are easily modified by controlling the pH value and growth time. The waveguide phenomenon in each ZnO rod is observed using confocal scanning electroluminescence microscopy (CSEM) and micro-electroluminescence spectra (MES).

    摘要翻译： 典型的发光二极管（LED）的光提取效率通过掺入一维ZnO纳米棒得到改善。 与没有纳米棒的LED相比，由于ZnO亚微米的波导效应，光提取效率提高了约31％。 使用简单的非催化湿化学生长法在不含种子层的铟锡氧化物（ITO）顶部接触层上，在低温下制备其他形状的ZnO微晶棒和纳米棒。 通过控制pH值和生长时间，可以容易地改变针状或平顶六边形结构的晶体形态以及ZnO微结构和纳米棒的密度和尺寸。 使用共焦扫描电致发光显微镜（CSEM）和微电致发光光谱（MES）观察每个ZnO棒中的波导现象。

    Method of fabricating vertical type light-emitting diode and method of separating layers from each other
    10.
    发明授权
    Method of fabricating vertical type light-emitting diode and method of separating layers from each other 有权
    制造垂直型发光二极管的方法和将层分离的方法

    公开(公告)号：US09034676B2

    公开(公告)日：2015-05-19

    申请号：US13696490

    申请日：2010-07-22

    申请人： Ki-Seok Kim ,  Gun-Young Jung

    发明人： Ki-Seok Kim ,  Gun-Young Jung

    IPC分类号： H01L21/00 ,  H01L33/00

    CPC分类号： H01L33/0079

    摘要： The present invention provides a method of fabricating a vertical type light-emitting diode and a method of separating layers from each other. Crystalline rods are provided on a lower layer or a lower substrate. The crystalline rods comprise ZnO. A layer which constitutes light-emitting diode or a light-emitting diode structure is formed on the crystalline rods, and the lower substrate is separated therefrom. The crystalline rods are dissolved during the separation. The formation of the crystalline rods is achieved by the formation of a seed layer and selective growth based on the seed layer.

    摘要翻译： 本发明提供一种垂直型发光二极管的制造方法和将层分离的方法。 结晶棒设置在下层或下基板上。 结晶棒包含ZnO。 在结晶棒上形成发光二极管或发光二极管结构的层，并将下基板分离。 结晶棒在分离过程中溶解。 结晶棒的形成通过形成种子层和基于种子层的选择性生长来实现。