公开(公告)号：US08045448B2

公开(公告)日：2011-10-25

申请号：US12189931

申请日：2008-08-12

申请人： Kyu-Min Kang ,  Sang-In Cho ,  Sangsung Choi

发明人： Kyu-Min Kang ,  Sang-In Cho ,  Sangsung Choi

IPC分类号： H04J11/00

CPC分类号： H04L27/2647

摘要： Provided is an apparatus and method for detecting a packet of a zero-padded OFDM signal, which are capable of determining if a packet exists in a reception (RX) signal by comparing a cross-correlation value of an OFDM signal delayed by a predetermined sample time, e.g., a zero-padded sample time, with a power value of the RX signal, thereby increasing a packet detection probability and preventing a false alarm. The packet detecting apparatus includes: a cross-correlation calculator for calculating a cross-correlation value of a reception signal received from the outside and delaying the calculated cross-correlation value by a predetermined sample time; a power calculator for calculating a power value of the reception signal; and a packet detector for determining if a packet exists in the reception signal by comparing the delayed cross-correlation value with the calculated power value, and detecting the corresponding packet.

摘要翻译： 提供了一种检测零填充OFDM信号的分组的装置和方法，其能够通过比较延迟了预定样本的OFDM信号的互相关值来确定在接收（RX）信号中是否存在分组 时间，例如零填充采样时间，具有RX信号的功率值，从而增加分组检测概率并防止误报。 分组检测装置包括：互相关计算器，用于计算从外部接收的接收信号的互相关值，并将所计算的互相关值延迟预定采样时间; 功率计算器，用于计算接收信号的功率值; 以及分组检测器，用于通过将延迟的互相关值与所计算的功率值进行比较来确定接收信号中是否存在分组，并检测相应的分组。

公开(公告)号：US07953199B2

公开(公告)日：2011-05-31

申请号：US12610604

申请日：2009-11-02

申请人： Kyu-Min Kang ,  Sang In Cho ,  Sung Woo Choi ,  Sangsung Choi

发明人： Kyu-Min Kang ,  Sang In Cho ,  Sung Woo Choi ,  Sangsung Choi

IPC分类号： H04L7/00 ,  H04L25/00 ,  H04L25/40

CPC分类号： H04B1/7183 ,  H04B1/7075

摘要： Provided is a synchronization error tracking device and method. The method and system estimates and corrects the synchronization error generated by time and frequency offsets during the data transmission interval and uses a module designed for initial synchronization or channel estimation without adding a new correlation operator. Further, a combining mark value and a synchronization position value acquired during the synchronization process are used.

摘要翻译： 提供了一种同步误差跟踪装置和方法。 该方法和系统估计并校正数据传输间隔期间由时间和频率偏移产生的同步误差，并使用设计用于初始同步或信道估计的模块，而不添加新的相关运算符。 此外，使用在同步处理期间获取的组合标记值和同步位置值。

公开(公告)号：US20100094920A1

公开(公告)日：2010-04-15

申请号：US12536240

申请日：2009-08-05

申请人： Sang In Cho ,  Kyu-Min Kang ,  Sangsung Choi

发明人： Sang In Cho ,  Kyu-Min Kang ,  Sangsung Choi

IPC分类号： G06F17/14

CPC分类号： G06F17/142

摘要： A Fourier transform device generates a first sequence according to an input sequence based on a stored lookup table, and generates an output sequence by performing a butterfly operation on the first sequence a plurality of times. Therefore, hardware capacity and power consumption of the Fourier transform device can be reduced

摘要翻译： 傅里叶变换装置根据存储的查找表根据输入序列生成第一序列，并且通过多次对第一序列执行蝶形运算来生成输出序列。 因此，可以降低傅里叶变换装置的硬件容量和功耗

公开(公告)号：US07945227B2

公开(公告)日：2011-05-17

申请号：US11951392

申请日：2007-12-06

申请人： Kyu-Min Kang ,  Sang-In Cho ,  Sang-Sung Choi

发明人： Kyu-Min Kang ,  Sang-In Cho ,  Sang-Sung Choi

IPC分类号： H04B1/06 ,  H04K3/00

CPC分类号： H03G3/3052

摘要： Provided is an apparatus and method for controlling a voltage gain in an ultra wideband receiving apparatus. The apparatus includes a register for storing an Automatic Gain Control (AGC) value detected in a section where an AGC operation control signal is “ON”; and a voltage gain controller for generating a voltage gain control value by reading the AGC stored in the register during a section where a reception enable signal is “ON”, and transferring the generated voltage gain control value to a voltage gain amplifier.

摘要翻译： 提供一种用于控制超宽带接收装置中的电压增益的装置和方法。 该装置包括用于存储在AGC操作控制信号为“ON”的部分中检测到的自动增益控制（AGC）值的寄存器; 以及电压增益控制器，用于通过在接收使能信号为“接通”的部分期间读取存储在寄存器中的AGC，并将所生成的电压增益控制值传送到电压增益放大器来产生电压增益控制值。

公开(公告)号：US20070133392A1

公开(公告)日：2007-06-14

申请号：US11635272

申请日：2006-12-07

申请人： Cheol-Ho Shin ,  Sung-Woo Choi ,  Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi ,  Kwang-Roh Park

发明人： Cheol-Ho Shin ,  Sung-Woo Choi ,  Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi ,  Kwang-Roh Park

IPC分类号： H04J11/00 ,  H04J1/00

CPC分类号： H04B1/7183 ,  H04L27/2605 ,  H04L27/265 ,  H04L27/2665

摘要： Provided is a method for adjusting Fast Fourier Transform (FFT) window positioning in a Multi Band Orthogonal Frequency Division Multiplexing Ultra-Wideband (MB-OFDM UWB) system. The method includes the steps of acquiring an initial FFT window position and a frequency hopping position, demodulating a received signal by using the initial FFT window position and the frequency hopping position acquired in the acquiring step, transmitting received data information to a Media Access Control (MAC) layer with a reception frame (RX frame) structure and judging at the MAC layer whether or not a packet error is occurred based on Frame Check Sequences (FCSs), and if no packet error is occurred, returning to the demodulating step, and if the packet error is occurred, changing a register map by using a predetermined interface line in a MAC-physical layer (MAC-PHY) interface to thereby adjust the FFT window position and the frequency hopping position, and then returning to the demodulating step.

摘要翻译： 提供了一种用于在多频带正交频分复用超宽带（MB-OFDM UWB）系统中调整快速傅里叶变换（FFT）窗口定位的方法。 该方法包括以下步骤：获取初始FFT窗口位置和跳频位置，通过使用在获取步骤中获取的初始FFT窗口位置和跳频位置解调接收信号，将接收的数据信息发送到介质访问控制（ MAC）层，并且在MAC层判断基于帧检查序列（FCS）是否发生分组错误，并且如果没有发生分组错误，则返回到解调步骤，并且 如果发生分组错误，则通过使用MAC-物理层（MAC-PHY）接口中的预定接口线来改变寄存器映射，从而调整FFT窗口位置和跳频位置，然后返回到解调步骤。

公开(公告)号：US20130165136A1

公开(公告)日：2013-06-27

申请号：US13821736

申请日：2011-09-09

申请人： Kyu-Min Kang ,  Sang-In Cho ,  Hyunduk Kang ,  Heon-Jin Hong ,  Chang-Joo Kim

发明人： Kyu-Min Kang ,  Sang-In Cho ,  Hyunduk Kang ,  Heon-Jin Hong ,  Chang-Joo Kim

IPC分类号： H04W16/14

CPC分类号： H04W16/14

摘要： The present invention relates to a system and method for managing resources, which involve managing a plurality of frequency resources in a communication system including a plurality of systems not having rights to use a first frequency band. The system and method of the present invention involve: defining, upon the detection of a frequency band available to the plurality of systems from the first frequency band, an interface between objects in the available frequency band so as to enable coexistence and frequency-sharing among the plurality of systems in the available frequency band; defining a primitive of a service access point (SAP) which supports the transceiving of information belonging to the plurality of systems between the objects through the interface; enabling the objects to transceive information belonging to the plurality of systems through the interface using the primitive of the service access point; and enabling the plurality of systems to coexist and share a frequency in the available frequency band to use the available frequency band by transceiving the information belonging to the plurality of systems.

摘要翻译： 本发明涉及一种用于管理资源的系统和方法，其涉及在包括不具有使用第一频带的权利的多个系统的通信系统中管理多个频率资源。 本发明的系统和方法包括：在检测到来自第一频带的多个系统可用的频带时，定义可用频带中的对象之间的接口，以便能够在可用频带内的共享和频率共享 在可用频带中的多个系统; 定义服务接入点（SAP）的原语，其支持通过接口在对象之间收集属于所述多个系统的信息; 使所述对象能够使用所述服务接入点的原语通过所述接口收发属于所述多个系统的信息; 并且使得所述多个系统能够共享和共享可用频带中的频率，以通过收发属于所述多个系统的信息来使用所述可用频带。

公开(公告)号：US07912891B2

公开(公告)日：2011-03-22

申请号：US11636242

申请日：2006-12-08

申请人： Sang-In Cho ,  Cheol-Ho Shin ,  Kyu-Min Kang ,  Sung-Woo Choi ,  Sang-Sung Choi ,  Jin-Gyun Chung ,  Yong-Eun Kim

发明人： Sang-In Cho ,  Cheol-Ho Shin ,  Kyu-Min Kang ,  Sung-Woo Choi ,  Sang-Sung Choi ,  Jin-Gyun Chung ,  Yong-Eun Kim

IPC分类号： G06F7/52

CPC分类号： G06F7/533

摘要： Provided are a high speed and low power fixed-point multiplier and method thereof. The multiplier includes: a partial product calculation unit for dividing input data into a plurality of bit groups, each bit group having a predetermined number of bits, generating partial products by independently multiplying a fixed coefficient for each bit group, and summing partial products included in a corresponding bit group, to thereby generate a summed partial products; and an adding unit for adding the summed partial products of each bit group generated from the partial product calculation unit.

摘要翻译： 提供了一种高速和低功率定点倍增器及其方法。 乘法器包括：部分乘积计算单元，用于将输入数据分成多个比特组，每个比特组具有预定数量的比特，通过独立地乘以每个比特组的固定系数产生部分乘积，并将包括在 相应的位组，从而产生相加的部分积; 以及添加单元，用于添加从所述部分乘积计算单元生成的每个位组的相加的部分乘积。

公开(公告)号：US20070180015A1

公开(公告)日：2007-08-02

申请号：US11636242

申请日：2006-12-08

申请人： Sang-In Cho ,  Cheol-Ho Shin ,  Kyu-Min Kang ,  Sung-Woo Choi ,  Sang-Sung Choi ,  Jin-Gyun Chung ,  Yong-Eun Kim

发明人： Sang-In Cho ,  Cheol-Ho Shin ,  Kyu-Min Kang ,  Sung-Woo Choi ,  Sang-Sung Choi ,  Jin-Gyun Chung ,  Yong-Eun Kim

IPC分类号： G06F7/52

CPC分类号： G06F7/533

摘要： Provided are a high speed and low power fixed-point multiplier and method thereof. The multiplier includes: a partial product calculation unit for dividing input data into a plurality of bit groups, each bit group having a predetermined number of bits, generating partial products by independently multiplying a fixed coefficient for each bit group, and summing partial products included in a corresponding bit group, to thereby generate a summed partial products; and an adding unit for adding the summed partial products of each bit group generated from the partial product calculation unit.

摘要翻译： 提供了一种高速和低功率定点倍增器及其方法。 乘法器包括：部分乘积计算单元，用于将输入数据分成多个比特组，每个比特组具有预定数量的比特，通过独立地乘以每个比特组的固定系数产生部分乘积，并将包括在 相应的位组，从而产生相加的部分积; 以及添加单元，用于添加从所述部分乘积计算单元生成的每个位组的相加的部分乘积。

公开(公告)号：US08009728B2

公开(公告)日：2011-08-30

申请号：US11635937

申请日：2006-12-08

申请人： Kyu-Min Kang ,  Cheol-Ho Shin ,  Sung-Woo Choi ,  Sang-In Cho ,  Sang-Sung Choi ,  Kwang-Roh Park

发明人： Kyu-Min Kang ,  Cheol-Ho Shin ,  Sung-Woo Choi ,  Sang-In Cho ,  Sang-Sung Choi ,  Kwang-Roh Park

IPC分类号： H03H7/30

CPC分类号： H04L25/03038 ,  H04L2025/03439

摘要： A parallel equalizer for a DS-CDMA UWB system and method thereof are provided. The parallel equalizer includes: a filter block for filtering a training input signal in a ‘training mode’, and filtering the plurality of input signals in parallel in a ‘symbol decision mode’; a symbol decision block for obtaining a symbol error based on a output from the filter block and a training symbol in the ‘training mode’, and estimating a transmission symbol for each of the input signals in the ‘symbol decision mode’, obtaining an error of one among the estimated transmission symbols for a symbol error calculating input signal; and an weight update block for updating a filter tap coefficients of the filter block based on the training input signal or the symbol error calculating input signal and the symbol error and transmitting the updated filter tap coefficients into the filter block.

摘要翻译： 提供了一种用于DS-CDMA UWB系统的并行均衡器及其方法。 并行均衡器包括：滤波器块，用于以“训练模式”对训练输入信号进行滤波，并且以“符号判定模式”并行地对多个输入信号进行滤波; 用于基于来自滤波块的输出和“训练模式”中的训练符号获得符号误差的符号判定块，并且以“符号判定模式”为每个输入信号估计发送符号，获得误差 估计的传输符号中的一个用于符号误差计算输入信号; 以及权重更新块，用于基于训练输入信号或符号误差计算输入信号和符号错误来更新滤波器块的滤波器抽头系数，并将更新的滤波器抽头系数发送到滤波器块中。

公开(公告)号：US07660339B2

公开(公告)日：2010-02-09

申请号：US11634006

申请日：2006-12-05

申请人： Cheol-Ho Shin ,  Sung-Woo Choi ,  Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi ,  Kwang-Roh Park

发明人： Cheol-Ho Shin ,  Sung-Woo Choi ,  Sang-In Cho ,  Kyu-Min Kang ,  Sang-Sung Choi ,  Kwang-Roh Park

IPC分类号： H04B1/18 ,  H04B1/00

CPC分类号： H04L27/2657 ,  H04B1/7143 ,  H04B1/7163 ,  H04B2001/7154 ,  H04L27/2676

摘要： Provided are an apparatus and method for estimating and correcting a frequency offset in a multiband-Orthogonal Frequency Division Multiplexing Ultra-Wideband system using a time frequency hopping. The method includes the steps of: calculating a tangent input having a first value (X) and a second value (Y) by using PS symbols transferred over same frequency band with respect to one of a plurality of frequency bands used for frequency hopping; calculating tan(X/Y) using the first value (X) and the second value (Y), and calculating an index corresponding to the value of tan(X/Y) from a look-up table created by reflecting a relative frequency offset with respect to a center frequency; calculating indexes representing frequency offsets estimated with respect to remaining frequency bands used for frequency hopping from the look-up table by using the calculated index; extracting an index of a numerical controlled oscillator according to correction positions with respect to a plurality of frequency bands by using the calculated indexes; and correcting the frequency offsets estimated using the extracted indexes according to time frequency patterns by using a numerical controlled oscillator table.

摘要翻译： 提供了一种用于使用时间跳频估计和校正多频带 - 正交频分复用超宽带系统中的频率偏移的装置和方法。 该方法包括以下步骤：通过使用相对于用于跳频的多个频带之一的相同频带传输的PS符号来计算具有第一值（X）和第二值（Y）的切线输入; 使用第一值（X）和第二值（Y）计算tan（X / Y），并且从通过反映相对频率偏移产生的查找表计算与tan（X / Y）的值相对应的指数 相对于中心频率; 计算表示使用所计算的索引从查找表中跳频所使用的剩余频带估计的频率偏移的索引; 通过使用计算出的索引，根据关于多个频带的校正位置提取数控振荡器的索引; 以及通过使用数控振荡器表，根据时间频率模式校正使用所提取的索引估计的频率偏移。