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1. 发明申请

US20070201354A1 METHOD AND APPARATUS OF THE VARIABLE POINTS IFFT/FFT 有权
标题翻译：可变点IFFT / FFT的方法和装置
公开(公告)号：US20070201354A1
公开(公告)日：2007-08-30
申请号：US11681201
申请日：2007-03-02
申请人： Hyun-Seo Oh , Hyoung-Goo Jeon , Hyun Lee , Won-Chul Choi
发明人： Hyun-Seo Oh , Hyoung-Goo Jeon , Hyun Lee , Won-Chul Choi
IPC分类号： H04J11/00
CPC分类号： G06F17/142 , H04L27/2628 , H04L27/265
摘要： Provided are a method and apparatus for performing a variable point Inverse Fast Fourier Transform (IFFT)/Fast Fourier Transform (FFT). The apparatus for performing a variable point IFFT includes: an IFFT interpolator generating interpolation data signals having a determined point and interpolating a plurality of interpolation data, the number of which depends on an IFFT operation mode signal into input data; an IFFT operator generating IFFT operation data signals by performing an IFFT operation for the interpolated data signals; an IFFT mode selector selecting and outputting some of the IFFT operation data signals in response to the IFFT operation mode signal so that the selected IFFT operation data have the same number of points as the input data; and a control unit outputting the IFFT operation. Therefore, it is possible to easily compute variably sized IFFT/FFT hardware.
摘要翻译：提供了一种用于执行可变点快速傅立叶逆变换（IFFT）/快速傅里叶变换（FFT）的方法和装置。用于执行可变点IFFT的装置包括：IFFT内插器，产生具有确定点并且内插多个内插数据的插值数据信号，其数量取决于IFFT操作模式信号为输入数据; IFFT操作者通过对内插的数据信号执行IFFT操作来产生IFFT操作数据信号; IFFT模式选择器响应于IFFT操作模式信号来选择和输出一些IFFT操作数据信号，使得所选择的IFFT操作数据具有与输入数据相同的点数; 以及输出IFFT操作的控制单元。因此，可以容易地计算可变大小的IFFT / FFT硬件。

2. 发明授权

US07626923B2 Method and apparatus of the variable points IFFT/FFT 有权
标题翻译：可变点IFFT / FFT的方法和装置
公开(公告)号：US07626923B2
公开(公告)日：2009-12-01
申请号：US11681201
申请日：2007-03-02
申请人： Hyun-Seo Oh , Hyoung-Goo Jeon , Hyun Lee , Won-Chul Choi
发明人： Hyun-Seo Oh , Hyoung-Goo Jeon , Hyun Lee , Won-Chul Choi
IPC分类号： H04J11/00
CPC分类号： G06F17/142 , H04L27/2628 , H04L27/265
摘要： Provided are a method and apparatus for performing a variable point Inverse Fast Fourier Transform (IFFT)/Fast Fourier Transform (FFT). The apparatus for performing a variable point IFFT includes: an IFFT interpolator generating interpolation data signals having a determined point and interpolating a plurality of interpolation data, the number of which depends on an IFFT operation mode signal into input data; an IFFT operator generating IFFT operation data signals by performing an IFFT operation for the interpolated data signals; an IFFT mode selector selecting and outputting some of the IFFT operation data signals in response to the IFFT operation mode signal so that the selected IFFT operation data have the same number of points as the input data; and a control unit outputting the IFFT operation. Therefore, it is possible to easily compute variably sized IFFT/FFT hardware.
摘要翻译：提供了一种用于执行可变点快速傅立叶逆变换（IFFT）/快速傅里叶变换（FFT）的方法和装置。用于执行可变点IFFT的装置包括：IFFT内插器，产生具有确定点并插入多个内插数据的插值数据信号，其数量取决于IFFT操作模式信号为输入数据; IFFT操作者通过对内插的数据信号执行IFFT操作来产生IFFT操作数据信号; IFFT模式选择器响应于IFFT操作模式信号来选择和输出一些IFFT操作数据信号，使得所选择的IFFT操作数据具有与输入数据相同的点数; 以及输出IFFT操作的控制单元。因此，可以容易地计算可变大小的IFFT / FFT硬件。

3. 发明申请

US20090154585A1 Channel estimation method and training signal creating method for channel estimation in mimo- ofdm system 审中-公开
标题翻译：信道估计方法和训练信号创建方法，用于模拟系统中的信道估计
公开(公告)号：US20090154585A1
公开(公告)日：2009-06-18
申请号：US11990632
申请日：2005-12-02
申请人： Hyun Lee , Won-Chul Choi , Hyoung-Goo Jeon
发明人： Hyun Lee , Won-Chul Choi , Hyoung-Goo Jeon
IPC分类号： H04B7/02
CPC分类号： H04L25/022 , H04L25/0204 , H04L25/0224 , H04L27/2601
摘要： Provided are a training signal generation method using impulse trains encoded with orthogonal codes and a channel estimation method using an orthogonal code decoding in a Multiple-Input Multiple-Output-Orthogonal Frequency Division Multiplex (MIMO-OFDM) system. The channel estimation method using the orthogonal code decoding in the MIMO-OFDM system includes the steps of creating a plurality of orthogonal codes depending on the number of receive antennas, decoding a signal received through each receive antenna by using the orthogonal codes, and estimating a channel response by averaging the received signals decoded with the orthogonal codes every OFDM symbol.
摘要翻译：提供了使用以正交码编码的脉冲串的训练信号生成方法和在多输入多输出正交频分复用（MIMO-OFDM）系统中使用正交码解码的信道估计方法。在MIMO-OFDM系统中使用正交码解码的信道估计方法包括根据接收天线的数量创建多个正交码的步骤，通过使用正交码对通过每个接收天线接收的信号进行解码，以及估计通过对每个OFDM符号以正交码解码的接收信号进行平均来进行信道响应。

4. 发明授权

US06832073B2 Apparatus and method for cancelling interference signals transmitted from neighbor base stations 有权
标题翻译：用于消除从邻近基站发送的干扰信号的装置和方法
公开(公告)号：US06832073B2
公开(公告)日：2004-12-14
申请号：US10125555
申请日：2002-04-19
申请人： Il-Soon Jang , Deuk Su Lyu , Hyun Seo Oh , Hyoung-Goo Jeon
发明人： Il-Soon Jang , Deuk Su Lyu , Hyun Seo Oh , Hyoung-Goo Jeon
IPC分类号： H04B1700
CPC分类号： H04B1/7097 , H04B1/71075 , H04B7/022 , H04B2201/70701 , H04B2201/70702
摘要： An apparatus and method for canceling pilot signals from neighbor base stations is disclosed. The present invention cancels unnecessary pilot signals transmitted from the neighbor base stations by detecting, analyzing a PN signal in a pilot signal of each base station, generating estimated interference signal according to analyzed information from the detected PN signal and subtracting estimated interference signal from the received signal. Therefore, the present invention increases a bandwidth of downlink transmission channel and improves the demodulator to be operatable in low signal-to-noise ratio (Eb/No).
摘要翻译：公开了一种用于从相邻基站取消导频信号的装置和方法。本发明通过检测分析每个基站的导频信号中的PN信号，根据来自检测到的PN信号的分析信息产生估计干扰信号并从接收到的信号中减去所估计的干扰信号来消除从相邻基站发送的不必要的导频信号信号。因此，本发明增加了下行链路传输信道的带宽，并使解调器在低信噪比（Eb / No）下可操作。

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