公开(公告)号：US07203251B2

公开(公告)日：2007-04-10

申请号：US10960415

申请日：2004-10-06

申请人： Young-Wan Kim ,  Yun-Jeong Song ,  Nae-Soo Kim ,  Ho-Jin Lee

发明人： Young-Wan Kim ,  Yun-Jeong Song ,  Nae-Soo Kim ,  Ho-Jin Lee

IPC分类号： H04L27/00 ,  H00B7/212

CPC分类号： H04L27/0014 ,  H04B1/28 ,  H04L2027/0028 ,  H04L2027/0057

摘要： The present invention provides an apparatus for compensating a phase difference of a receiver, the apparatus including: an accumulating unit for accumulating a radio frequency (RF) input signal and generating an accumulated RF signal in order to minimize an effect of a background noise of the RF input signal; a early-local oscillating unit for generating a phase-early local oscillated signal based on a local oscillated signal of the receiver; a late-local oscillating unit for generating a phase-late local oscillated signal based on a local oscillated signal of the receiver; a phase early-late compensating unit for compensating a phase early-late based on the accumulated RF input signal and the phase-early and phase-late local oscillated signals; a look-up table data mapping unit for controlling a phase of the local oscillated signal with respect to a phase difference; and a feedback transmitting unit for transmitting a phase compensating data to the local oscillator.

摘要翻译： 本发明提供了一种用于补偿接收机的相位差的装置，该装置包括：累加单元，用于累积射频（RF）输入信号并产生累积的RF信号，以便最小化背景噪声的影响 RF输入信号; 早期本地振荡单元，用于基于接收机的本地振荡信号产生相位早期本地振荡信号; 一个后局部振荡单元，用于基于接收器的本地振荡信号产生相位较晚的本地振荡信号; 一个相位早期补偿单元，用于基于累积的RF输入信号和相位早和相位晚的本地振荡信号来补偿相位的早期阶段; 查找表数据映射单元，用于控制相对于相位差的本地振荡信号的相位; 以及用于将相位补偿数据发送到本地振荡器的反馈发送单元。

公开(公告)号：US20050141654A1

公开(公告)日：2005-06-30

申请号：US10960415

申请日：2004-10-06

申请人： Young-Wan Kim ,  Yun-Jeong Song ,  Nae-Soo Kim ,  Ho-Jin Lee

发明人： Young-Wan Kim ,  Yun-Jeong Song ,  Nae-Soo Kim ,  Ho-Jin Lee

IPC分类号： H04B1/28 ,  H04L27/00 ,  H04L27/06

CPC分类号： H04L27/0014 ,  H04B1/28 ,  H04L2027/0028 ,  H04L2027/0057

摘要： The present invention provides an apparatus for compensating a phase difference of a receiver, the apparatus including: an accumulating unit for accumulating a radio frequency (RF) input signal and generating an accumulated RF signal in order to minimize an effect of a background noise of the RF input signal; a early-local oscillating unit for generating a phase-early local oscillated signal based on a local oscillated signal of the receiver; a late-local oscillating unit for generating a phase-late local oscillated signal based on a local oscillated signal of the receiver; a phase early-late compensating unit for compensating a phase early-late based on the accumulated RF input signal and the phase-early and phase-late local oscillated signals; a look-up table data mapping unit for controlling a phase of the local oscillated signal with respect to a phase difference; and a feedback transmitting unit for transmitting a phase compensating data to the local oscillator.

摘要翻译： 本发明提供了一种用于补偿接收机的相位差的装置，该装置包括：累加单元，用于累积射频（RF）输入信号并产生累积的RF信号，以便最小化背景噪声的影响 RF输入信号; 早期本地振荡单元，用于基于接收机的本地振荡信号产生相位早期本地振荡信号; 一个后局部振荡单元，用于基于接收器的本地振荡信号产生相位较晚的本地振荡信号; 一个相位早期补偿单元，用于基于累积的RF输入信号和相位早和相位晚的本地振荡信号来补偿相位的早期阶段; 查找表数据映射单元，用于控制相对于相位差的本地振荡信号的相位; 以及用于将相位补偿数据发送到本地振荡器的反馈发送单元。

公开(公告)号：US06925132B2

公开(公告)日：2005-08-02

申请号：US10136307

申请日：2002-05-02

申请人： Yun-Jeong Song ,  Young-Wan Kim ,  Nae-Soo Kim ,  Ho-Jin Lee

发明人： Yun-Jeong Song ,  Young-Wan Kim ,  Nae-Soo Kim ,  Ho-Jin Lee

IPC分类号： H04L27/34 ,  H04L27/00 ,  H04L27/38 ,  H04L27/22 ,  H04L27/06 ,  H04L27/14

CPC分类号： H04L27/3863 ,  H04L2027/0016 ,  H04L2027/0024

摘要： Disclosed is a method for detecting and correcting amplitude and phase imbalances between in-phase (I) and quadrature-phase (Q) components in a high-speed wireless communication quadrature demodulator, which comprises: a) comparing an input signal with a signal determined by a quadrant to which the input signal belongs, and detecting imbalances between I and Q components with respect to the input signal; and b) using the imbalances detected in a) to correct the input signal. The present invention prevents distorting of the demodulator's performance caused by the imbalances to between I and Q components and increases application to high-speed wireless communication.

摘要翻译： 公开了一种用于检测和校正高速无线通信正交解调器中的同相（I）和正交相位（Q）分量之间的幅度和相位不平衡的方法，包括：a）将输入信号与确定的信号进行比较 通过输入信号所属的象限，并且相对于输入信号检测I和Q分量之间的不平衡; 和b）使用a）中检测到的不平衡来校正输入信号。 本发明可以防止由I和Q组件之间的不平衡引起的解调器的性能失真，并增加了对高速无线通信的应用。

公开(公告)号：US07010059B2

公开(公告)日：2006-03-07

申请号：US10406094

申请日：2003-04-02

申请人： Yun-Jeong Song ,  Young-Wan Kim ,  Nae-Soo Kim ,  Deock-Gil Oh

发明人： Yun-Jeong Song ,  Young-Wan Kim ,  Nae-Soo Kim ,  Deock-Gil Oh

IPC分类号： H04L27/22

CPC分类号： H04L27/2273 ,  H04L27/3809 ,  H04L2027/0028 ,  H04L2027/0057

摘要： Disclosed is a quadrature demodulator for high-speed wireless communication, which comprises: an A/D converter for converting received signals into digital signals; a signal recovery unit for recovering carriers and symbol timing from the signals converted by the A/D converter; a decision unit for detecting recovered signals output by the signal recovery unit, and performing a decision process on them; an I/Q gain imbalance detector for detecting gain imbalances of the I and Q-phase components from the recovered signals, and outputting an I/Q gain compensation value for compensating for the gain imbalances; and an I/Q gain compensator, provided between the A/D converter and the signal recovery unit, for reflecting the I/Q gain compensation value output by the I/Q gain imbalance detector to the received signals.

摘要翻译： 公开了一种用于高速无线通信的正交解调器，其包括：A / D转换器，用于将接收到的信号转换成数字信号; 信号恢复单元，用于从由A / D转换器转换的信号中恢复载波和符号定时; 判定单元，用于检测由信号恢复单元输出的恢复信号，并对其进行决定处理; I / Q增益不平衡检测器，用于检测来自恢复信号的I相和Q相分量的增益不平衡，并输出用于补偿增益不平衡的I / Q增益补偿值; 以及设置在A / D转换器和信号恢复单元之间的用于将由I / Q增益不平衡检测器输出的I / Q增益补偿值反映到接收信号的I / Q增益补偿器。

公开(公告)号：US07750823B2

公开(公告)日：2010-07-06

申请号：US11776161

申请日：2007-07-11

申请人： Jin Kyeong Kim ,  Nae-Soo Kim ,  Cheol Sig Pyo

发明人： Jin Kyeong Kim ,  Nae-Soo Kim ,  Cheol Sig Pyo

IPC分类号： G08G1/08

CPC分类号： G08G1/161 ,  G08G1/056

摘要： An apparatus allocates a channel used for inter-vehicle communications according to a traveling direction. The apparatus includes a traveling direction determiner for determining whether or not a traveling direction of a vehicle is changed; and a channel allocator for allocating the vehicle a previously allocated channel or a new channel based on a determined result of the traveling direction determiner. Further, a method allocates a channel used for inter-vehicle communications according to a traveling direction. The method includes the steps of determining whether or not a traveling direction of a vehicle is changed; and allocating the vehicle a previously allocated channel or a new channel based on a determined result in the above step.

摘要翻译： 一种装置根据行驶方向分配用于车辆间通信的信道。 该装置包括用于确定车辆的行进方向是否改变的行进方向确定器; 以及信道分配器，用于基于行进方向确定器的确定结果来分配车辆先前分配的信道或新信道。 此外，方法根据行驶方向分配用于车辆间通信的信道。 该方法包括以下步骤：确定车辆行驶方向是否改变; 以及在上述步骤中基于所确定的结果来分配车辆先前分配的信道或新信道。

公开(公告)号：US20060136799A1

公开(公告)日：2006-06-22

申请号：US11265451

申请日：2005-11-02

申请人： Eun-A Choi ,  Nae-Soo Kim ,  Deock-Gil Oh ,  Ji-Won Jung

发明人： Eun-A Choi ,  Nae-Soo Kim ,  Deock-Gil Oh ,  Ji-Won Jung

IPC分类号： H03M13/00

CPC分类号： H03M13/11

摘要： Provided are an LDPC decoding apparatus and method using a sequential decoding algorithm having a partial group, capable of reducing the number of an iterative decoding by more than half without degrading the performance and increasing an amount of computation. The LDPC decoding method includes the steps of: receiving a prior probability information (channel values) based on information on channel values associated with distance between symbol signals in constellation related to the received noise and LDPC encoded data, and initializing bit nodes; dividing check nodes into partial groups before updating check node information based on the prior probability information, and performing a decoding by applying a sequential decoding algorithm; determining whether a parity check equations are satisfied; and outputting decoded messages obtained when satisfying the parity check equation or after terminating an iterative processor by a termination algorithm.

公开(公告)号：US20050144543A1

公开(公告)日：2005-06-30

申请号：US10888167

申请日：2004-07-09

申请人： Eun-A Choi ,  Nae-Soo Kim ,  Ji-Won Jung ,  Sung-Jun Cho ,  Tae-Gil Lee ,  Sang-Jin Park ,  In-Ki Lee

发明人： Eun-A Choi ,  Nae-Soo Kim ,  Ji-Won Jung ,  Sung-Jun Cho ,  Tae-Gil Lee ,  Sang-Jin Park ,  In-Ki Lee

IPC分类号： G06F11/00

CPC分类号： H04L1/0057 ,  H03M13/1105 ,  H03M13/6337 ,  H03M13/6594 ,  H04L2001/0093

摘要： The present invention relates to a pre-processing apparatus using nonuniform quantization of a channel reliability value and a low density parity check (LDPC) decoding system. The pre-processing apparatus can present degradation in performance and be embodied simply by performing decoding pre-process by estimating a discrete channel reliability value (Lc*) through nonuniform quantization of a channel reliability value based on a relations between a bit error rate (BER) estimated through a simulation performed in advance and a standard deviation (σ) of channel noise within a predetermined range of noise estimation error and p, and bit-shifting a receiving signal as much as a discrete channel reliability value. The pre-processing apparatus includes: a channel reliability measuring unit, a nonuniform quantizing unit, a sign bit adding unit, a bit shifting unit.

摘要翻译： 本发明涉及使用信道可靠性值和低密度奇偶校验（LDPC）解码系统的非均匀量化的预处理装置。 预处理装置可以呈现性能下降，并且通过基于信道可靠性值的非均匀量化来估计离散信道可靠性值（L> c * *）来执行解码预处理 通过预先执行的模拟估计的误码率（BER）与噪声估计误差和p的预定范围内的信道噪声的标准偏差（sigma）之间的关系，以及将接收信号与离散信道 可靠性值。 预处理装置包括：信道可靠性测量单元，不均匀量化单元，符号位加法单元，位移单元。

公开(公告)号：US08089909B2

公开(公告)日：2012-01-03

申请号：US12149255

申请日：2008-04-29

申请人： Se Han Kim ,  Kyeseon Lee ,  Chong-Ho Yoon ,  Gang-Ho Byun ,  Nae-Soo Kim ,  Cheol Sig Pyo

发明人： Se Han Kim ,  Kyeseon Lee ,  Chong-Ho Yoon ,  Gang-Ho Byun ,  Nae-Soo Kim ,  Cheol Sig Pyo

IPC分类号： G08C17/00 ,  H04J3/16 ,  H04J3/22

CPC分类号： H04W74/0808 ,  H04L7/041 ,  H04W52/0216 ,  H04W74/002 ,  Y02D70/166

摘要： Provided is a method of transmitting/receiving data in a sensor node for reducing overhearing of sensor nodes, and a sensor network which implements the method. A sender node having transmission data from among a plurality of nodes which perform a low power listening (LPL) operation in an asynchronous manner at predetermined time intervals, generates a long preamble including short preambles, each having information including a destination address of the transmission data, a remainder of the long preamble, and a length of the transmission data, and sequentially transmits the second preamble and the transmission data. A receiver node from among the plurality of nodes determines whether a valid signal is sensed during an active state in the LPL operation. If it is determined that the valid signal is sensed, the receiver node receives the short preamble transmitted from the sender node. The receiver node determines a duration time of a deactivated state of the receiver node based on the received first preamble, thereby reducing overhearing in the sensor network.

摘要翻译： 提供了一种在传感器节点中发送/接收数据以减少传感器节点的窃听的方法，以及实现该方法的传感器网络。 具有以预定时间间隔以异步方式执行低功率监听（LPL）操作的多个节点的发送数据的发送方节点生成包括短前导码的长前导码，每个具有包含发送数据的目的地地址的信息 ，长前导码的剩余部分和发送数据的长度，并顺序发送第二前同步码和发送数据。 多个节点中的接收器节点确定在LPL操作中的活动状态期间是否感测到有效信号。 如果确定感测到有效信号，则接收器节点接收从发送器节点发送的短前置码。 接收机节点基于接收到的第一前导码来确定接收机节点的去激活状态的持续时间，从而减少传感器网络中的窃听。

公开(公告)号：US20110194471A1

公开(公告)日：2011-08-11

申请号：US12808542

申请日：2008-10-24

申请人： Ji-Eun Kim ,  Kang Ho-yong ,  Nae-Soo Kim ,  Cheol-l-Sig Pyo

发明人： Ji-Eun Kim ,  Kang Ho-yong ,  Nae-Soo Kim ,  Cheol-l-Sig Pyo

IPC分类号： H04W52/02

CPC分类号： H04W52/0235

摘要： Provided are a wake-up apparatus and wake-up method for a low power sensor node, and more particularly, to a wake-up apparatus and wake-up method for a low power sensor node, which can extend the battery life of the sensor node and minimize the amount of power consumed by an entire sensor network power by minimizing unnecessary power consumption of the sensor node. The wake-up apparatus for a low power sensor node includes: a wake-up signal detector receiving and detecting a wake-up signal of a sensor node; a wake-up radio frequency (RF) circuit unit filtering and amplifying the wake-up signal; and a wake-up baseband transducer detecting a wake-up address from the wake-up signal and comparing and verifying the wake-up address with a wake-up address that is provided from a server managing the sensor node. The wake-up apparatus outputs an interrupt signal for transmitting a sensing event of the sensor node or outputs a wake-up address of another sensor node in an area where the interrupt signal is to be sensed if errors are not detected when the wake-up address is verified.

摘要翻译： 提供了用于低功率传感器节点的唤醒装置和唤醒方法，更具体地，涉及用于低功率传感器节点的唤醒装置和唤醒方法，其可以延长传感器的电池寿命 节点，并通过最小化传感器节点的不必要的功耗来最小化整个传感器网络功率消耗的功率量。 用于低功率传感器节点的唤醒装置包括：唤醒信号检测器，其接收并检测传感器节点的唤醒信号; 唤醒射频（RF）电路单元对唤醒信号进行滤波和放大; 以及唤醒基带传感器，从唤醒信号检测唤醒地址，并用从管理传感器节点的服务器提供的唤醒地址来比较和验证唤醒地址。 唤醒装置输出用于发送传感器节点的感测事件的中断信号，或者在唤醒时未检测到错误的情况下，在要检测中断信号的区域中输出另一个传感器节点的唤醒地址 地址已验证。

公开(公告)号：US07804455B2

公开(公告)日：2010-09-28

申请号：US11782195

申请日：2007-07-24

申请人： Jong Moon Lee ,  Nae-Soo Kim ,  Cheol Sig Pyo ,  Ik Guen Choi

发明人： Jong Moon Lee ,  Nae-Soo Kim ,  Cheol Sig Pyo ,  Ik Guen Choi

IPC分类号： H01Q21/00

CPC分类号： H01Q1/2216 ,  H01Q9/0407 ,  H01Q21/245

摘要： Provided are an antenna apparatus for linearly polarized diversity antennas in a radio frequency identification (RFID) reader, and a method of controlling the antenna apparatus. The antenna apparatus includes: a plurality of linearly polarized diversity antennas disposed to have different directions to one another; a switching unit connecting the linearly polarized diversity antennas to the RFID reader; and a controller controlling the switching unit to selectively activate the linearly polarized diversity antennas.

摘要翻译： 提供了一种用于射频识别（RFID）读取器中的线性极化分集天线的天线装置和控制天线装置的方法。 天线装置包括：多个线性极化分集天线，被设置为具有彼此不同的方向; 将线性极化分集天线连接到RFID读取器的开关单元; 以及控制器，控制所述切换单元选择性地激活所述线性极化分集天线。