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1. 发明申请

US20060223476A1 Antenna selection diversity apparatus and method in a broadband wireless communication system 审中-公开
标题翻译：宽带无线通信系统中的天线选择分集装置及方法
公开(公告)号：US20060223476A1
公开(公告)日：2006-10-05
申请号：US11392899
申请日：2006-03-30
申请人： Seong-Wook Song , Young-Mo Gu , Yong-Chul Song , Min-Goo Kim
发明人： Seong-Wook Song , Young-Mo Gu , Yong-Chul Song , Min-Goo Kim
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H04B7/0811
摘要： An apparatus and method for improving antenna diversity in a receiver of a broadband wireless communication system using multiple antennas are provided. The receiver with the diversity apparatus uses a structure of multiple analog front ends, a structure for measuring antenna-by-antenna reception power values/Carrier-to-Interference plus Noise Ratios (CINRs) after Fast Fourier Transform (FFT) using a single analog front end, and a structure based on a single analog front end for measuring antenna-by-antenna reception power values after Analog-to-Digital (A/D) conversion without use of FFT. When a receive antenna is selected, the measured reception power values/CINRs are used. In a system for transmitting pilot signals with preamble data in a regular pattern, the receiver can have improved performance through a suitable frequency modulation process and can be implemented at low cost, as compared with that of the conventional antenna selection diversity.
摘要翻译：提供一种用于改善使用多个天线的宽带无线通信系统的接收机中的天线分集的装置和方法。具有分集装置的接收机使用多个模拟前端的结构，用于使用单个模拟器在快速傅里叶变换（FFT）之后测量天线天线接收功率值/载波与干扰加噪声比（CINR）的结构前端，以及基于单个模拟前端的结构，用于在不使用FFT的情况下测量模数（A / D）转换之后的天线接收功率值。当选择接收天线时，使用测量的接收功率值/ CINR。在用于以规则模式发送具有前导码数据的导频信号的系统中，与常规天线选择分集相比，接收机可以通过适当的频率调制过程具有改进的性能，并且可以以低成本实现。

2. 发明授权

US07609609B2 Apparatus and method for processing digital signal in an OFDMA wireless communication system 失效
标题翻译：用于在OFDMA无线通信系统中处理数字信号的装置和方法
公开(公告)号：US07609609B2
公开(公告)日：2009-10-27
申请号：US11274900
申请日：2005-11-16
申请人： Seong-Wook Song , Yong-Chul Song , Young-Mo Gu , Min-Goo Kim
发明人： Seong-Wook Song , Yong-Chul Song , Young-Mo Gu , Min-Goo Kim
IPC分类号： H04J9/00
CPC分类号： H04L27/263 , H04L27/2608
摘要： An apparatus and method is provided to process a digital signal in an orthogonal frequency division multiple access (OFDMA) wireless communication system. In the apparatus, a memory stores the number of subcarriers allocated to a mobile terminal and stores an inverse discrete Fourier transform (IDFT) coefficient. A controller outputs a mode selection signal indicating a transmission mode or a reception mode. An inverse fast Fourier transform (IFFT) block multiplies a first result obtained by determining a bitwidth for the IDFT coefficient according to the number of subcarriers by a second result obtained by determining a bitwidth for data according to the number of subcarriers.
摘要翻译：提供了一种在正交频分多址（OFDMA）无线通信系统中处理数字信号的装置和方法。在该装置中，存储器存储分配给移动终端的子载波的数量，并且存储逆离散傅里叶变换（IDFT）系数。控制器输出指示发送模式或接收模式的模式选择信号。逆快速傅立叶变换（IFFT）块将通过根据副载波的数量确定IDFT系数的位宽获得的第一结果乘以通过根据子载波的数量确定数据的位宽而获得的第二结果。

3. 发明申请

US20060120266A1 Apparatus and method for processing digital signal in an OFDMA wireless communication system 失效
公开(公告)号：US20060120266A1
公开(公告)日：2006-06-08
申请号：US11274900
申请日：2005-11-16
申请人： Seong-Wook Song , Yong-Chul Song , Young-Mo Gu , Min-Goo Kim
发明人： Seong-Wook Song , Yong-Chul Song , Young-Mo Gu , Min-Goo Kim
IPC分类号： H04J11/00
CPC分类号： H04L27/263 , H04L27/2608
摘要： An apparatus and method is provided to process a digital signal in an orthogonal frequency division multiple access (OFDMA) wireless communication system. In the apparatus, a memory stores the number of subcarriers allocated to a mobile terminal and stores an inverse discrete Fourier transform (IDFT) coefficient. A controller outputs a mode selection signal indicating a transmission mode or a reception mode. An inverse fast Fourier transform (IFFT) block multiplies a first result obtained by determining a bitwidth for the IDFT coefficient according to the number of subcarriers by a second result obtained by determining a bitwidth for data according to the number of subcarriers.

4. 发明申请

US20050271026A1 Method and apparatus for detecting a cell in an orthogonal frequency division multiple access system 有权
标题翻译：用于检测正交频分多址系统中的小区的方法和装置
公开(公告)号：US20050271026A1
公开(公告)日：2005-12-08
申请号：US11108071
申请日：2005-04-18
申请人： Seong-Wook Song , Young-Mo Gu , Min-Goo Kim
发明人： Seong-Wook Song , Young-Mo Gu , Min-Goo Kim
IPC分类号： H04L27/26 , H04B7/216 , H04J11/00 , H04L5/02
CPC分类号： H04B1/7083 , H04L5/0016 , H04L25/0216 , H04L27/2647
摘要： An apparatus and method are provided for detecting via a mobile station a cell in which the mobile station is located in order to initiate communication in an Orthogonal Frequency Division Multiple Access (OFDMA) system including a plurality of base stations transmitting signal with a pseudo-random noise (PN) code to the mobile station. The apparatus and method include receiving the signal from the base station and performing fast Fourier transform (FFT) on the received signal; generating a PN code for comparison with a base station's PN code included in the signal; and detecting a cell where the mobile station is located by searching for a PN code synchronized in the FFT-processed signal using the generated PN code.
摘要翻译：提供了一种装置和方法，用于经由移动台检测移动台所在的小区，以便在包括多个基站的正交频分多址（OFDMA）系统中发起通信，所述正交频分多址（OFDMA）系统发送具有伪随机信号的信号噪声（PN）码到移动台。该装置和方法包括从基站接收信号并对接收到的信号执行快速傅里叶变换（FFT）; 生成用于与包括在信号中的基站的PN码进行比较的PN码; 以及使用所生成的PN码，通过搜索在经FFT处理的信号中同步的PN码来检测移动站所在的小区。

5. 发明申请

US20060098752A1 Apparatus and method for transmitting a preamble and searching a cell in an OFDMA system 审中-公开
标题翻译：用于在OFDMA系统中发送前同步码和搜索小区的装置和方法
公开(公告)号：US20060098752A1
公开(公告)日：2006-05-11
申请号：US11269693
申请日：2005-11-09
申请人： Seong-Wook Song , Young-Mo Gu , Min-Goo Kim
发明人： Seong-Wook Song , Young-Mo Gu , Min-Goo Kim
IPC分类号： H04K1/10
CPC分类号： H04L27/2601
摘要： An apparatus and method for generating a preamble and searching a cell using the generated preamble in an orthogonal frequency division multiple access (OFDMA) system. Q cyclic shift values and P pseudo-random noise (PN) codes are used to distinguish N cells. One of the P PN codes is cyclically shifted according to one of the Q cyclic shift values and therefore a preamble is generated. Because a relatively small number of PN codes are used, the memory capacity of a mobile terminal for storing the PN codes is saved and a cell search error is reduced.
摘要翻译：一种用于在正交频分多址（OFDMA）系统中使用所生成的前同步码生成前同步码并搜索小区的装置和方法。 Q循环移位值和P伪随机噪声（PN）码用于区分N个单元。 P PN码中的一个根据Q循环移位值之一循环移位，因此产生前导码。由于使用相对较少数量的PN码，所以存储PN码的移动终端的存储容量被保存，小区搜索误差降低。

6. 发明申请

US20050201270A1 Method and apparatus for transmitting and receiving pilot signals in an orthogonal frequency division multiple access system 审中-公开
标题翻译：用于在正交频分多址系统中发送和接收导频信号的方法和装置
公开(公告)号：US20050201270A1
公开(公告)日：2005-09-15
申请号：US11078620
申请日：2005-03-14
申请人： Seong-Wook Song , Young-Mo Gu , Min-Goo Kim
发明人： Seong-Wook Song , Young-Mo Gu , Min-Goo Kim
IPC分类号： H04J11/00 , H04B7/216
CPC分类号： H04L27/2613 , H04L5/0007 , H04L5/005
摘要： A method and apparatus are provided for transmitting and receiving pilot signals to estimate link gains and channels of neighboring base stations in an orthogonal frequency division multiple access (OFDMA) system. Each base station cyclically shifts a frequency domain signal of the same pseudo random (PN) code by a predetermined multiple of a time interval between pilots. A mobile terminal cyclically shifts a time domain pilot signal by a time interval between pilots associated with a base station with which the mobile terminal currently communicates in a reverse direction of cyclic shift of the base station, and estimates a channel and a link gain of the base station.
摘要翻译：提供一种用于发送和接收导频信号以估计正交频分多址（OFDMA）系统中相邻基站的链路增益和信道的方法和装置。每个基站将相同伪随机（PN）码的频域信号周期性地将导频之间的时间间隔的预定倍数移位。移动终端将时域导频信号循环移位与移动终端当前在基站的循环移位的相反方向上与之通信的基站相关联的导频之间的时间间隔，并估计基站的信道和链路增益基站。

7. 发明授权

US07502311B2 Method and apparatus for detecting a cell in an orthogonal frequency division multiple access system 有权
标题翻译：用于检测正交频分多址系统中的小区的方法和装置
公开(公告)号：US07502311B2
公开(公告)日：2009-03-10
申请号：US11108071
申请日：2005-04-18
申请人： Seong-Wook Song , Young-Mo Gu , Min-Goo Kim
发明人： Seong-Wook Song , Young-Mo Gu , Min-Goo Kim
IPC分类号： H04J11/00
CPC分类号： H04B1/7083 , H04L5/0016 , H04L25/0216 , H04L27/2647
摘要： An apparatus and method are provided for detecting via a mobile station a cell in which the mobile station is located in order to initiate communication in an Orthogonal Frequency Division Multiple Access (OFDMA) system including a plurality of base stations transmitting signal with a pseudo-random noise (PN) code to the mobile station. The apparatus and method include receiving the signal from the base station and performing fast Fourier transform (FFT) on the received signal; generating a PN code for comparison with a base station's PN code included in the signal; and detecting a cell where the mobile station is located by searching for a PN code synchronized in the FFT-processed signal using the generated PN code.
摘要翻译：提供了一种装置和方法，用于经由移动台检测移动台所在的小区，以便在包括多个基站的正交频分多址（OFDMA）系统中发起通信，所述正交频分多址（OFDMA）系统发送具有伪随机信号的信号噪声（PN）码到移动台。该装置和方法包括从基站接收信号并对接收到的信号执行快速傅里叶变换（FFT）; 生成用于与包括在信号中的基站的PN码进行比较的PN码; 以及使用所生成的PN码，通过搜索在经FFT处理的信号中同步的PN码来检测移动站所在的小区。

8. 发明申请

US20060176093A1 Automatic gain control apparatus and method in an orthogonal frequency division multiple access sytem 有权
标题翻译：一种正交频分多址系统中的自动增益控制装置及方法
公开(公告)号：US20060176093A1
公开(公告)日：2006-08-10
申请号：US11348345
申请日：2006-02-07
申请人： Yong-Chul Song , Young-Mo Gu , Min-Goo Kim
发明人： Yong-Chul Song , Young-Mo Gu , Min-Goo Kim
IPC分类号： H03K5/02
CPC分类号： H03G3/3063
摘要： An automatic gain control (AGC) apparatus of a wireless mobile terminal, and method, in an orthogonal frequency division multiple access (OFDMA) system. A gain amplifier controls an amplification gain of received analog symbols. An analog-to-digital converter converts the received analog symbols into a digital signal. A fast Fourier transform (FFT) unit converts the digital signal into a frequency-domain signal. A power measurer measures power in the frequency domain in units of sub-carriers. A sub-carrier power accumulator detects a sub-carrier carrying a signal, and accumulates its power value. A sub-carrier average power measurer estimates an average power value transmitted per sub-carrier from the accumulated power value. A control means compares the estimated average power value with a reference power value, and generates a control signal used for controlling a gain of the gain amplifier according to the comparison result.
摘要翻译：一种在正交频分多址（OFDMA）系统中的无线移动终端的自动增益控制（AGC）装置和方法。增益放大器控制接收的模拟符号的放大增益。模数转换器将接收的模拟符号转换为数字信号。快速傅里叶变换（FFT）单元将数字信号转换成频域信号。功率测量器以子载波为单位测量频域的功率。子载波功率累加器检测携带信号的子载波，并累加其功率值。子载波平均功率测量器估计从累积功率值发送的每个副载波的平均功率值。控制装置将估计的平均功率值与参考功率值进行比较，并且根据比较结果产生用于控制增益放大器的增益的控制信号。

9. 发明授权

US07822153B2 Automatic gain control apparatus and method in an orthogonal frequency division multiple access system 有权
标题翻译：一种正交频分多址系统中的自动增益控制装置及方法
公开(公告)号：US07822153B2
公开(公告)日：2010-10-26
申请号：US11348345
申请日：2006-02-07
申请人： Yong-Chul Song , Young-Mo Gu , Min-Goo Kim
发明人： Yong-Chul Song , Young-Mo Gu , Min-Goo Kim
IPC分类号： H04L27/06
CPC分类号： H03G3/3063
摘要： An automatic gain control (AGC) apparatus of a wireless mobile terminal, and method, in an orthogonal frequency division multiple access (OFDMA) system. A gain amplifier controls an amplification gain of received analog symbols. An analog-to-digital converter converts the received analog symbols into a digital signal. A fast Fourier transform (FFT) unit converts the digital signal into a frequency-domain signal. A power measurer measures power in the frequency domain in units of sub-carriers. A sub-carrier power accumulator detects a sub-carrier carrying a signal, and accumulates its power value. A sub-carrier average power measurer estimates an average power value transmitted per sub-carrier from the accumulated power value. A control means compares the estimated average power value with a reference power value, and generates a control signal used for controlling a gain of the gain amplifier according to the comparison result.
摘要翻译：一种在正交频分多址（OFDMA）系统中的无线移动终端的自动增益控制（AGC）装置和方法。增益放大器控制接收的模拟符号的放大增益。模数转换器将接收的模拟符号转换为数字信号。快速傅里叶变换（FFT）单元将数字信号转换成频域信号。功率测量器以子载波为单位测量频域的功率。子载波功率累加器检测携带信号的子载波，并累加其功率值。子载波平均功率测量器估计从累积功率值发送的每个副载波的平均功率值。控制装置将估计的平均功率值与参考功率值进行比较，并且根据比较结果产生用于控制增益放大器的增益的控制信号。

10. 发明授权

US08121565B2 Method and apparatus for receiving data using multiple antennas in a communication system 有权
标题翻译：用于在通信系统中使用多个天线接收数据的方法和装置
公开(公告)号：US08121565B2
公开(公告)日：2012-02-21
申请号：US11961179
申请日：2007-12-20
申请人： Jong-Hun Rhee , Min-Goo Kim , Young Mo Gu
发明人： Jong-Hun Rhee , Min-Goo Kim , Young Mo Gu
IPC分类号： H04B17/02
CPC分类号： H04B7/0848 , H04B7/0854 , H04B7/0857
摘要： A method and apparatus for receiving data using multiple antennas in a communication system are provided. A received signal-combining scheme is determined according to the strength of an interference signal included in the signals received from the antennas. The signals received from the antennas are combined according to the determined received signal-combining scheme. In this manner, the method and apparatus adaptively use a received data-combining scheme according to the channel condition, thereby ensuring optimal reception performance.
摘要翻译：提供一种在通信系统中使用多个天线接收数据的方法和装置。根据从天线接收的信号中包含的干扰信号的强度来确定接收到的信号组合方案。从天线接收的信号根据确定的接收信号组合方案进行组合。以这种方式，该方法和装置根据信道条件自适应地使用接收的数据组合方案，从而确保最佳的接收性能。

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