公开(公告)号：US20080071847A1

公开(公告)日：2008-03-20

申请号：US11576565

申请日：2005-11-02

申请人： Sang In Cho ,  Sang Sung Choi ,  Kwang Roh Park

发明人： Sang In Cho ,  Sang Sung Choi ,  Kwang Roh Park

IPC分类号： G06F17/14 ,  G06F7/38 ,  G06F7/52

CPC分类号： H04L27/263 ,  H04L27/265

摘要： Provided is a method for transforming data using a look-up table. The method includes the steps of: (a) mapping preprocessed input binary data to a constellation diagram divided into four quadrants to output a first complex number; (b) performing addition/subtraction operations between real numbers and between imaginary numbers with respect to the first complex number and a second complex number; and (c) reading a fourth complex from a look-up table in response to the first complex number, the second complex number and a third complex number, the look-up table outputting the fourth complex by performing a subtraction operation on multiplication results between real numbers and between imaginary numbers and an addition operation on multiplication results between the real numbers and the imaginary numbers with respect to the result value of the step (b) and the third complex number. Accordingly, it is possible to reduce the hardware size at the time of IFFT/FFT design and to provide a high-speed, low-power operation.

摘要翻译： 提供了一种使用查找表来转换数据的方法。 该方法包括以下步骤：（a）将预处理的输入二进制数据映射到分成四个象限的星座图，以输出第一个复数; （b）相对于第一复数和第二复数执行实数之间和虚数之间的加法/减法运算; 以及（c）响应于所述第一复数，所述第二复数和第三复数，从查找表读取第四复数，所述查找表通过对多个 在实数和虚数之间，以及相对于步骤（b）和第三复数的结果值的实数和虚数之间的相乘结果的加法运算。 因此，可以在IFFT / FFT设计时降低硬件尺寸并提供高速，低功率操作。

公开(公告)号：US07831649B2

公开(公告)日：2010-11-09

申请号：US11576565

申请日：2005-11-02

申请人： Sang In Cho ,  Sang Sung Choi ,  Kwang Roh Park

发明人： Sang In Cho ,  Sang Sung Choi ,  Kwang Roh Park

IPC分类号： G06F17/14

CPC分类号： H04L27/263 ,  H04L27/265

摘要： Provided is a method for transforming data using a look-up table. The method includes the steps of: (a) mapping pre-processed input binary data to a constellation diagram divided into four quadrants to output a first complex number; (b) performing addition/subtraction operations between real numbers and between imaginary numbers with respect to the first complex number and a second complex number; and (c) reading a fourth complex from a look-up table in response to the first complex number, the second complex number and a third complex number, the look-up table outputting the fourth complex by performing a subtraction operation on multiplication results between real numbers and between imaginary numbers and an addition operation on multiplication results between the real numbers and the imaginary numbers with respect to the result value of the step (b) and the third complex number. Accordingly, it is possible to reduce the hardware size at the time of IFFT/FFT design and to provide a high-speed, low-power operation.

摘要翻译： 提供了一种使用查找表来转换数据的方法。 该方法包括以下步骤：（a）将预处理的输入二进制数据映射到分成四个象限的星座图，以输出第一个复数; （b）相对于第一复数和第二复数执行实数之间和虚数之间的加法/减法运算; 以及（c）响应于第一复数，第二复数和第三复数，从查找表读取第四复数，查找表通过对乘法结果执行减法运算来输出第四复数 实数和虚数之间以及相对于步骤（b）和第三复数的结果值的实数和虚数之间的相乘结果的加法运算。 因此，可以在IFFT / FFT设计时降低硬件尺寸并提供高速，低功率操作。

公开(公告)号：US07693924B2

公开(公告)日：2010-04-06

申请号：US11264886

申请日：2005-11-02

申请人： Sang In Cho ,  Sangsung Choi ,  Kwang Roh Park

发明人： Sang In Cho ,  Sangsung Choi ,  Kwang Roh Park

IPC分类号： G06F17/14

CPC分类号： H04L27/265 ,  H04L27/263

摘要： A 2N-point and N-point FFT/IFFT dual mode processor is provided. The processor includes a butterfly operator, the first and second MUXs, and the first and second N-point FFT processors. The butterfly operator receives 2N data and butterfly-operates on the received 2N data when receiving a control signal ‘0’ from the controller. The first and second MUXs respectively receive results from the butterfly operator to output the results in an increment of N when receiving a control signal ‘0’ from the controller, and respectively outputs different N data when receiving a control signal ‘1’ from the controller. The first and second N-point FFT processors N-point FFT operate on the results from the first and second MUXs and respectively output the same under control of the controller. Since the N-point FFT operation can be simultaneously performed two times at a receiver, the performance of the receiver can be enhanced.

摘要翻译： 提供2N点和N点FFT / IFFT双模式处理器。 处理器包括蝶形运算符，第一和第二MUX以及第一和第二N点FFT处理器。 当从控制器接收到控制信号“0”时，蝶形运算符接收2N个数据并对接收的2N数据进行蝶形运算。 当从控制器接收到控制信号“0”时，第一和第二MUX分别接收蝶形运算器的结果以输出N的增量，并且当从控制器接收到控制信号“1”时分别输出不同的N数据 。 第一和第二N点FFT处理器N点FFT对来自第一和第二MUX的结果进行操作，并在控制器的控制下分别输出。 由于在接收机可以同时进行N点FFT运算两次，所以可以提高接收机的性能。

公开(公告)号：US20090158131A1

公开(公告)日：2009-06-18

申请号：US12188416

申请日：2008-08-08

申请人： Sung Woo CHOI ,  Kyu-Min Kang ,  Sang Sung Choi ,  Kwang Roh Park

发明人： Sung Woo CHOI ,  Kyu-Min Kang ,  Sang Sung Choi ,  Kwang Roh Park

IPC分类号： H03M13/03 ,  G06F11/10

CPC分类号： H03M13/41 ,  H03M13/3972 ,  H03M13/6356 ,  H03M13/6362 ,  H03M13/6561 ,  H03M13/6566

摘要： A Viterbi decoding apparatus receives a plurality of block data in time order, and transmits a block data group including the plurality of block data. Then, the Viterbi decoding apparatus applies a Viterbi decoding algorithm to the block data group and outputs some block data of the block data group. In this way, it is possible to provide a Viterbi decoding apparatus that can operate at a high speed and improve a data transmission rate.

摘要翻译： 维特比解码装置以时间顺序接收多个块数据，并发送包括多个块数据的块数据组。 然后，维特比解码装置将维特比解码算法应用于块数据组，并输出块数据组的一些块数据。 以这种方式，可以提供能够高速运行并提高数据传输速率的维特比解码装置。

公开(公告)号：US07760689B2

公开(公告)日：2010-07-20

申请号：US11947923

申请日：2007-11-30

申请人： Cheol Ho Shin ,  Sung Woo Choi ,  Joon Hak Bang ,  Byoung Hak Kim ,  Sang Sung Choi ,  Kwang Roh Park

发明人： Cheol Ho Shin ,  Sung Woo Choi ,  Joon Hak Bang ,  Byoung Hak Kim ,  Sang Sung Choi ,  Kwang Roh Park

IPC分类号： H04W4/00

CPC分类号： H04L1/20 ,  H04L1/0002 ,  H04L27/2626 ,  H04L27/2647

摘要： It is possible to intuitively determine whether to control transmission power of a current data transmission rate mode or to change the data transmission rate mode by extracting an automatic gain controller (AGC) index after driving algorithm of an AGC, recognizing a channel clear assessment (CCA) status by using the extracted AGC index, and generating link quality indicator (LQI) information to be transmitted from a physical layer to a media access control (MAC) layer by using the AGC index, when the CCA status is high, in order to embody effective piconets in a multi-band orthogonal frequency division multiplexing ultra-wide band system (MB-OFDM UWB system) including a receiver having a dynamic gain controller(DGC) and the AGC.

摘要翻译： 可以直观地确定是否控制当前数据传输速率模式的传输功率，或者通过在AGC的驱动算法之后提取自动增益控制器（AGC）索引来改变数据传输速率模式，识别信道清除评估（CCA ）状态，并且当CCA状态为高时，通过使用AGC索引生成要从物理层发送到媒体访问控制（MAC）层的链路质量指示符（LQI）信息，以便 在包括具有动态增益控制器（DGC）和AGC的接收机的多频带正交频分复用超宽带系统（MB-OFDM UWB系统）中实现有效微微网。

公开(公告)号：US07366262B2

公开(公告)日：2008-04-29

申请号：US11023382

申请日：2004-12-29

申请人： Cheol HO Shin ,  Sang sung Choi ,  Kwang Roh Park

发明人： Cheol HO Shin ,  Sang sung Choi ,  Kwang Roh Park

IPC分类号： H04L27/06

CPC分类号： H04B1/7163 ,  H04B1/713 ,  H04B1/7183 ,  H04B2001/6908 ,  H04L27/2657 ,  H04L27/2676

摘要： A frequency estimation method of multiband (MB)-orthogonal frequency division multiplexing (OFDM) ultra wide band (UWB) system using an Alt-PHY time frequency (TF) hopping strategy based on IEEE 802. 15. 3a. includes the steps of: a) selecting a predetermined number of frequencies among a plurality of center frequencies based on a predetermined number of OFDM symbols and estimating relative frequency offsets for selected frequencies; b) obtaining an average relative frequency offset by averaging the estimated relative frequency offsets when two or more frequencies are selected at the step a); and c) obtaining real frequency offsets for each of the center frequencies by transforming the obtained average relative frequency offset to the real frequency offsets and compensating a frequency offset caused by a transmitting/receiving local oscillators based on the obtained real frequency offsets.

摘要翻译： 基于IEEE 802.11的使用Alt-PHY时间频率（TF）跳频策略的多频带（MB） - 正交频分复用（OFDM）超宽带（UWB）系统的频率估计方法。 包括以下步骤：a）基于预定数量的OFDM符号来选择多个中心频率中的预定数量的频率，并估计所选频率的相对频率偏移; b）当在步骤a）选择两个或更多个频率时，通过平均所估计的相对频率偏移来获得平均相对频率偏移; 以及c）通过将所获得的平均相对频率偏移变换为实际偏移量来获得每个中心频率的实际频率偏移，并且基于所获得的实频偏移来补偿由发送/接收本地振荡器引起的频率偏移。

公开(公告)号：US08059626B2

公开(公告)日：2011-11-15

申请号：US11949739

申请日：2007-12-03

申请人： Young Ae Jeon ,  Sang Jae Lee ,  Sang Sung Choi ,  Kwang Roh Park

发明人： Young Ae Jeon ,  Sang Jae Lee ,  Sang Sung Choi ,  Kwang Roh Park

IPC分类号： H04W72/00

CPC分类号： H04W72/04 ,  H04W84/18

摘要： Provided is an optimum resource allocation method in distributed medium access control in a wireless personal area network, including: defining needed parameters in advance; calculating an overhead AckOverhead needed for an acknowledgement policy and calculating an overhead MasOverhead generated per medium access slot by using the calculated overhead AckOverhead and an amount of the medium access slots which remain after transmitting a frame; calculating the number of frame bits to be transmitted per superframe; determining the number of medium access slots primarily needed per the superframe by using the calculated number of frame bits and the calculated overhead MasOverhead generated per the medium access slot; and optimizing the number of medium access slots finally needed per the superframe.

摘要翻译： 提供了一种在无线个域网中的分布式媒体接入控制中的最佳资源分配方法，包括：提前定义所需参数; 计算确认策略所需的开销AckOverhead，并通过使用所计算的开销AckOverhead和发送帧之后剩余的介质访问时隙的量来计算每个媒体接入时隙产生的开销MasOverhead; 计算每个超帧要发送的帧比特数; 通过使用所计算的帧比特数和每个媒体接入时隙产生的计算出的开销的MasOverhead来确定每个超帧主要需要的媒体接入时隙的数量; 并优化每个超帧最终需要的媒体接入时隙的数量。

公开(公告)号：US20100054306A1

公开(公告)日：2010-03-04

申请号：US12329875

申请日：2008-12-08

申请人： Jong Won Kim ,  Sang Sung Choi ,  Kwang Roh Park

发明人： Jong Won Kim ,  Sang Sung Choi ,  Kwang Roh Park

IPC分类号： H04B1/69 ,  H04B1/10

CPC分类号： H04L5/0007 ,  H04L5/0032 ,  H04L5/0035 ,  H04L5/0044 ,  H04L5/0062

摘要： A signal transmitting device detects information on respective frequencies of a plurality of subcarriers configuring an interference signal and information on respective voltage values of the subcarrier from the received interference signal, and modulates data according to the ultra-wideband scheme through subcarriers of part of predetermined bandwidths based on frequency information and voltage value information to generate ultra-wideband signals. Accordingly, signal interference with a heterogeneous communication device can be reduced by detecting an interference signal when an absolute value of the interference signal is small or noise power of the interference signal is large.

摘要翻译： 信号发送装置从接收的干扰信号中检测构成干扰信号的多个副载波的各个频率的信息以及关于副载波的各个电压值的信息，并根据超宽带方式通过预定带宽的一部分的子载波来调制数据 基于频率信息和电压值信息产生超宽带信号。 因此，当干扰信号的绝对值较小或干扰信号的噪声功率较大时，可以通过检测干扰信号来减少与异构通信设备的信号干扰。

公开(公告)号：US08516053B2

公开(公告)日：2013-08-20

申请号：US12832586

申请日：2010-07-08

申请人： Sang Wook Park ,  Noh Sam Park ,  Jong Hyun Jang ,  Kwang Roh Park

发明人： Sang Wook Park ,  Noh Sam Park ,  Jong Hyun Jang ,  Kwang Roh Park

IPC分类号： G06F15/16

CPC分类号： H04N5/775 ,  G11B27/11 ,  G11B2020/10537 ,  H04N21/242 ,  H04N21/4788 ,  H04N21/4882

摘要： Provided are a multimedia play apparatus and method. The multimedia play apparatus and method enable synchronization between an audio and a video through existing multimedia play time information, and even in a multimedia service that simultaneously provides multimedia and a message, the multimedia play apparatus and method enable synchronization between multimedia and a message that occurs by terminal characteristics between different environments and different users on the basis of existing multimedia play time information and multimedia meaning information. Moreover, by performing synchronization between multimedia and a message on the basis of the multimedia meaning information, the multimedia play apparatus and method can prevent the damage of a multimedia service that provides multimedia and a message together because of a spoiler corresponding to a malicious message.

摘要翻译： 提供了一种多媒体播放装置和方法。 多媒体播放装置和方法通过现有的多媒体播放时间信息实现音频和视频之间的同步，即使在同时提供多媒体和消息的多媒体服务中，多媒体播放装置和方法也可以实现多媒体与发生的消息之间的同步 根据现有多媒体播放时间信息和多媒体含义信息的不同环境和不同用户之间的终端特性。 此外，通过基于多媒体含义信息进行多媒体和消息之间的同步，多媒体播放装置和方法可以防止由于与恶意消息对应的扰流器而将多媒体和消息一起提供的多媒体服务的损坏。

公开(公告)号：USRE44334E1

公开(公告)日：2013-07-02

申请号：US13050669

申请日：2011-03-17

申请人： Yong Ae Jeon ,  Ji Eun Kim ,  Sangsung Choi ,  Kwang Roh Park

发明人： Yong Ae Jeon ,  Ji Eun Kim ,  Sangsung Choi ,  Kwang Roh Park

IPC分类号： H04J3/22

CPC分类号： H04W72/1263 ,  H04L47/14 ,  H04L47/50 ,  H04W84/18

摘要： An apparatus for transmitting WPAN (Wireless Personal Area Network) MAC (Medium Access Control) frames includes a transport frame management unit for creating MAC transport frames if data is generated from an upper protocol and application layer unit, classifying the created MAC transport frames by kinds, and managing the classified MAC transport frames by queues, a transport memory control unit for transmitting the transport frames at a high speed, and a transport frame transmission unit for responsible for the transmission of the transport frames by judging the transmission time of the frames.