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1. 发明申请

US20080095249A1 Apparatus and method for estimating coarse carrier frequency offset for frequency synchronization in OFDM receiver 审中-公开
标题翻译：用于估计OFDM接收机中频率同步的粗载波频偏的装置和方法
公开(公告)号：US20080095249A1
公开(公告)日：2008-04-24
申请号：US11645743
申请日：2006-12-27
申请人： Su-Jin Yoon , Yun-Ju Kwon , Hee-Jin Roh
发明人： Su-Jin Yoon , Yun-Ju Kwon , Hee-Jin Roh
IPC分类号： H04K1/10
CPC分类号： H04L27/2675 , H04L27/2659 , H04L27/2686
摘要： An apparatus and method for estimating a coarse carrier frequency offset in an OFDM receiver are provided, in which an Fast Fourier Transform (FFT) unit performs FFT for a received signal over one symbol duration and outputs a previously known signal included in the FFT signal, a correlation value calculator evaluates autocorrelation values of the previously known signal for plural candidate offsets, an accumulator accumulates the autocorrelation values to the autocorrelation values evaluated over a previous symbol duration, and a maximum value selector selects first and second maximum values of the autocorrelation values. A threshold tester compares a ratio between the first and second maximum values with a predetermined threshold, and determines a candidate offset corresponding to the first maximum value as the coarse carrier frequency offset if the ratio is less than the threshold. Otherwise, the threshold tester instructs the FFT unit to receive a signal over a next symbol duration.
摘要翻译：提供了一种用于估计OFDM接收机中的粗载波频率偏移的装置和方法，其中快速傅立叶变换（FFT）单元在一个符号持续时间内对接收到的信号执行FFT，并输出包括在FFT信号中的先前已知的信号，相关值计算器对多个候选偏移的先前已知信号的自相关值进行评估，累加器将自相关值累积到在先前符号持续时间内估计的自相关值，最大值选择器选择自相关值的第一和第二最大值。阈值测试器将第一和第二最大值之间的比率与预定阈值进行比较，并且如果该比率小于阈值，则将与第一最大值相对应的候选偏移量确定为粗略载波频率偏移。否则，阈值测试器指示FFT单元在下一个符号持续时间内接收信号。

2. 发明授权

US07945003B2 Method and apparatus for detecting offset in an orthogonal frequency division multiplexing system 有权
标题翻译：用于在正交频分复用系统中检测偏移的方法和装置
公开(公告)号：US07945003B2
公开(公告)日：2011-05-17
申请号：US11706151
申请日：2007-02-14
申请人： Yun-Ju Kwon , Su-Jin Yoon
发明人： Yun-Ju Kwon , Su-Jin Yoon
IPC分类号： H04L27/06
CPC分类号： H04L27/2675 , H04L27/2659 , H04L27/2672
摘要： Disclosed is a method for detecting a frequency offset in an Orthogonal Frequency Division Multiplexing (OFDM) system. The method includes determining a first frequency index based on autocorrelation values calculated according to a frequency index for a pilot signal of a received symbol, accumulating the autocorrelation values calculated according to the frequency index for the pilot signal of the received symbol depending on a symbol count, and determining a second frequency index based on the accumulated autocorrelation values, and determining at least one of the first frequency index and the second frequency as a frequency offset according to channel quality.
摘要翻译：公开了一种用于检测正交频分复用（OFDM）系统中的频率偏移的方法。该方法包括基于根据接收符号的导频信号的频率索引计算的自相关值来确定第一频率索引，根据符号计数累积根据接收符号的导频信号的频率索引计算的自相关值并且基于所述累加的自相关值来确定第二频率索引，并且根据信道质量将所述第一频率索引和所述第二频率中的至少一个确定为频率偏移。

3. 发明申请

US20070206692A1 Method and apparatus for detecting offset in an orthogonal frequency division multiplexing system 有权
标题翻译：用于在正交频分复用系统中检测偏移的方法和装置
公开(公告)号：US20070206692A1
公开(公告)日：2007-09-06
申请号：US11706151
申请日：2007-02-14
申请人： Yun-Ju Kwon , Su-Jin Yoon
发明人： Yun-Ju Kwon , Su-Jin Yoon
IPC分类号： H04K1/10
CPC分类号： H04L27/2675 , H04L27/2659 , H04L27/2672
摘要： Disclosed is a method for detecting a frequency offset in an Orthogonal Frequency Division Multiplexing (OFDM) system. The method includes determining a first frequency index based on autocorrelation values calculated according to a frequency index for a pilot signal of a received symbol, accumulating the autocorrelation values calculated according to the frequency index for the pilot signal of the received symbol depending on a symbol count, and determining a second frequency index based on the accumulated autocorrelation values, and determining at least one of the first frequency index and the second frequency as a frequency offset according to channel quality.
摘要翻译：公开了一种用于检测正交频分复用（OFDM）系统中的频率偏移的方法。该方法包括基于根据接收符号的导频信号的频率索引计算的自相关值来确定第一频率索引，根据符号计数累积根据接收符号的导频信号的频率索引计算的自相关值并且基于所述累加的自相关值来确定第二频率索引，并且根据信道质量将所述第一频率索引和所述第二频率中的至少一个确定为频率偏移。

4. 发明授权

US07961012B2 Apparatus and method for preventing generation of glitch in a clock switching circuit 有权
标题翻译：用于防止在时钟切换电路中产生毛刺的装置和方法
公开(公告)号：US07961012B2
公开(公告)日：2011-06-14
申请号：US12188277
申请日：2008-08-08
申请人： Heon-Seok Hong , Yun-Ju Kwon , Yong-Chan Kim
发明人： Heon-Seok Hong , Yun-Ju Kwon , Yong-Chan Kim
IPC分类号： H03K5/00
CPC分类号： G06F1/10
摘要： An apparatus and for preventing a glitch in a clock switching circuit includes a select signal manager and a clock gate unit. The select signal manager generates a detect change signal, provides the detect change signal as an input signal for generating a clock gate signal to the clock gate unit, and changes a muxsel signal into a select signal using the clock gate signal to select a clock intending for switching. Upon receiving the detect change signal, the clock gate unit gates a received clock, generates the clock gate signal using a level of the detect change signal as an input signal, and provides the generated clock gate signal to the select signal manager.
摘要翻译：一种用于防止时钟切换电路中的毛刺的装置包括选择信号管理器和时钟门单元。选择信号管理器生成检测改变信号，将检测改变信号提供为用于产生时钟门信号到时钟门单元的输入信号，并使用时钟门信号将多路复用器信号改变为选择信号，以选择时钟用于切换。在接收到检测变化信号时，时钟门单元对接收到的时钟进行门控，使用检测变化信号的电平作为输入信号产生时钟门信号，并将所生成的时钟门信号提供给选择信号管理器。

5. 发明授权

US08924753B2 Apparatus and method for adaptive frequency scaling in digital system 有权
标题翻译：数字系统中自适应频率缩放的装置和方法
公开(公告)号：US08924753B2
公开(公告)日：2014-12-30
申请号：US13276503
申请日：2011-10-19
申请人： Tae-Hong Park , Ji-Yong Yoon , Kang-Min Lee , Yun-Ju Kwon , Jong-Hyuck Hong
发明人： Tae-Hong Park , Ji-Yong Yoon , Kang-Min Lee , Yun-Ju Kwon , Jong-Hyuck Hong
IPC分类号： G06F1/00 , G06F1/32
CPC分类号： G06F1/324 , G06F1/3215 , G06F1/3228 , G06F1/3253 , Y02D10/126 , Y02D10/151
摘要： An apparatus and method for adaptively changing clock frequencies of a Central Processing Unit (CPU) and a bus in a digital system are provided. The system includes an Adaptive Frequency Scaling (AFS) controller and a clock controller. The AFS controller determines whether to change a clock frequency of the CPU according to operation information of the CPU, and determines whether to change a clock frequency of the bus according to operation information of the bus. The clock controller generates a clock frequency of the CPU and a clock frequency of the bus according to the determination of the AFS controller.
摘要翻译：提供一种用于在数字系统中自适应地改变中央处理单元（CPU）和总线的时钟频率的装置和方法。该系统包括自适应频率缩放（AFS）控制器和时钟控制器。 AFS控制器根据CPU的操作信息确定是否改变CPU的时钟频率，并根据总线的操作信息确定是否改变总线的时钟频率。时钟控制器根据AFS控制器的确定产生CPU的时钟频率和总线的时钟频率。

6. 发明申请

US20110150134A1 APPARATUS AND METHOD FOR SCRAMBLING IN A WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：一种无线通信系统中的扫描方法
公开(公告)号：US20110150134A1
公开(公告)日：2011-06-23
申请号：US13061331
申请日：2009-09-03
申请人： Kyung-Chul Yoo , Bo-Rham Lee , Yun-Ju Kwon , Dong-Min Kim
发明人： Kyung-Chul Yoo , Bo-Rham Lee , Yun-Ju Kwon , Dong-Min Kim
IPC分类号： H04L27/20 , H04L27/04
CPC分类号： H04L27/206 , H04L1/0003 , H04L1/0041 , H04L9/08 , H04L25/03866 , H04L27/2032 , H04L27/36 , H04L63/0428
摘要： An apparatus and method for scrambling in a wireless communication system are provided. The apparatus includes a selector, a plurality of scramblers, and a plurality of modulators. The selector selects a scrambling scheme to be applied to a transmission bit stream according to a modulation scheme to be applied to the transmission bit stream. The plurality of scramblers scramble the transmission bit stream according to a scrambling scheme corresponding to each of a plurality of modulation schemes. The plurality of modulators modulate the scrambled transmission bit stream according to the plurality of modulation schemes.
摘要翻译：提供了一种在无线通信系统中进行加扰的装置和方法。该装置包括选择器，多个加扰器和多个调制器。选择器根据要应用于传输比特流的调制方案来选择要应用于传输比特流的加扰方案。多个加扰器根据对应于多个调制方案中的每一个的加扰方案来对传输比特流进行加密。多个调制器根据多个调制方案来调制加扰的传输比特流。

7. 发明授权

US08605821B2 Apparatus and method for scrambling in a wireless communication system 有权
标题翻译：一种在无线通信系统中进行加扰的装置和方法
公开(公告)号：US08605821B2
公开(公告)日：2013-12-10
申请号：US13061331
申请日：2009-09-03
申请人： Kyung-Chul Yoo , Bo-Rham Lee , Yun-Ju Kwon , Dong-Min Kim
发明人： Kyung-Chul Yoo , Bo-Rham Lee , Yun-Ju Kwon , Dong-Min Kim
IPC分类号： H04L27/36
CPC分类号： H04L27/206 , H04L1/0003 , H04L1/0041 , H04L9/08 , H04L25/03866 , H04L27/2032 , H04L27/36 , H04L63/0428
摘要： An apparatus and method for scrambling in a wireless communication system are provided. The apparatus includes a selector, a plurality of scramblers, and a plurality of modulators. The selector selects a scrambling scheme to be applied to a transmission bit stream according to a modulation scheme to be applied to the transmission bit stream. The plurality of scramblers scramble the transmission bit stream according to a scrambling scheme corresponding to each of a plurality of modulation schemes. The plurality of modulators modulate the scrambled transmission bit stream according to the plurality of modulation schemes.
摘要翻译：提供了一种在无线通信系统中进行加扰的装置和方法。该装置包括选择器，多个加扰器和多个调制器。选择器根据要应用于传输比特流的调制方案来选择要应用于传输比特流的加扰方案。多个加扰器根据对应于多个调制方案中的每一个的加扰方案来对传输比特流进行加密。多个调制器根据多个调制方案来调制加扰的传输比特流。

8. 发明申请

US20050190819A1 Apparatus and method for providing code timing acquisition in a mobile communication system using multiple antennas 审中-公开
标题翻译：用于在使用多个天线的移动通信系统中提供码定时获取的装置和方法
公开(公告)号：US20050190819A1
公开(公告)日：2005-09-01
申请号：US11065269
申请日：2005-02-25
申请人： Yun-Ju Kwon , Chul-Jin Kim , June-Hyeok Im , In-Kwon Paik
发明人： Yun-Ju Kwon , Chul-Jin Kim , June-Hyeok Im , In-Kwon Paik
IPC分类号： H04B7/02 , H04B1/707 , H04B1/713
CPC分类号： H04B1/7077 , H04B1/7093 , H04B1/712 , H04B2201/70701
摘要： A reception apparatus and method are provided for acquiring code timing by receiving pilot signals spread with allocated codes in a receiver using multiple antennas, wherein a transmitter using multiple antennas allocates different codes to pilot signals for transmitting through the respective antennas. The apparatus and method comprise receiving the spread pilot signals through the respective antennas; outputting estimated propagation delay values of the pilot signals transmitted from the respective antennas of the transmitter and peak values of matched filters for respective channels; and calculating new estimated propagation delay values by applying weights determined based on the peak values of matched filters for respective channels to the estimated propagation delay values, and acquiring code timing with the new estimated propagation delay values.
摘要翻译：提供一种接收装置和方法，用于通过使用多个天线接收在接收机中利用分配的码扩频的导频信号来获取码定时，其中使用多个天线的发射机将不同的码分配给用于通过各个天线进行发射的导频信号。该装置和方法包括：通过各个天线接收扩展的导频信号; 输出从发送器的各个天线发送的导频信号的估计传播延迟值和各个信道的匹配滤波器的峰值; 以及通过将基于各个信道的匹配滤波器的峰值确定的加权应用于估计的传播延迟值来计算新的估计传播延迟值，以及用新的估计传播延迟值获取码定时。

9. 发明授权

US08811549B2 Apparatus and method for automatically controlling gain in portable communication system 有权
标题翻译：便携式通信系统中自动控制增益的装置和方法
公开(公告)号：US08811549B2
公开(公告)日：2014-08-19
申请号：US12578349
申请日：2009-10-13
申请人： Byeong-Min Lee , Yun-Ju Kwon
发明人： Byeong-Min Lee , Yun-Ju Kwon
IPC分类号： H04L27/08 , H03G3/30
CPC分类号： H03G3/3052
摘要： An apparatus and method for automatically controlling a gain in a portable communication system are provided. The apparatus includes a channel determiner for controlling a fading margin depending on the channel variation amount to control the limited total dynamic range of the ADC.
摘要翻译：提供了一种用于自动控制便携式通信系统中的增益的装置和方法。该装置包括用于根据信道变化量控制衰落余量以控制ADC的有限总动态范围的信道确定器。

10. 发明申请

US20090039940A1 APPARATUS AND METHOD FOR PREVENTING GENERATION OF GLITCH IN A CLOCK SWITCHING CIRCUIT 有权
标题翻译：用于防止在时钟切换电路中产生玻璃的装置和方法
公开(公告)号：US20090039940A1
公开(公告)日：2009-02-12
申请号：US12188277
申请日：2008-08-08
申请人： Heon-Seok Hong , Yun-Ju Kwon , Yong-Chan Kim
发明人： Heon-Seok Hong , Yun-Ju Kwon , Yong-Chan Kim
IPC分类号： G06F1/04
CPC分类号： G06F1/10
摘要： An apparatus and for preventing a glitch in a clock switching circuit includes a select signal manager and a clock gate unit. The select signal manager generates a detect change signal, provides the detect change signal as an input signal for generating a clock gate signal to the clock gate unit, and changes a muxsel signal into a select signal using the clock gate signal to select a clock intending for switching. Upon receiving the detect change signal, the clock gate unit gates a received clock, generates the clock gate signal using a level of the detect change signal as an input signal, and provides the generated clock gate signal to the select signal manager.
摘要翻译：一种用于防止时钟切换电路中的毛刺的装置包括选择信号管理器和时钟门单元。选择信号管理器生成检测改变信号，将检测改变信号提供为用于产生时钟门信号到时钟门单元的输入信号，并使用时钟门信号将多路复用器信号改变为选择信号，以选择时钟用于切换。在接收到检测变化信号时，时钟门单元对接收到的时钟进行门控，使用检测变化信号的电平作为输入信号产生时钟门信号，并将所生成的时钟门信号提供给选择信号管理器。

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