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公开(公告)号：KR1020100032299A
公开(公告)日：2010-03-25
申请号：KR1020090073707
申请日：2009-08-11
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0072 , H04L1/0041
Abstract: PURPOSE: A method and an apparatus for configuring protocol header is provided to effectively process protocol header information of a variable length in a receiving device by easily extracting variable length header information. CONSTITUTION: A variable length physical layer header(123) and a fixed length physical layer header(121) are composed. The fixed length physical layer header is encoded according to a first coding scheme. A header check sequence is generated in order to check the fixed length physical layer header, the variable length physical layer header and the combination of MAC header. The MAC(Media Access Control) header and HCS(Header Check Sequence) which are scrambled by scrambling the MAC header and HCS are generated. The variable length physical layer header, the scrambled MAC header and HCS are encoded according to a second coding scheme.
Abstract translation: 目的：提供一种用于配置协议报头的方法和装置，通过容易地提取可变长度报头信息来有效地处理接收设备中可变长度的协议报头信息。 构成：构成可变长度物理层报头（123）和固定长度物理层报头（121）。 固定长度物理层报头根据第一编码方案进行编码。 为了检查固定长度物理层报头，可变长度物理层报头和MAC报头的组合，生成报头检查序列。 生成MAC（媒体访问控制）头部和通过对MAC头部和HCS进行扰频而加扰的HCS（头部检查序列）。 根据第二编码方案对可变长度物理层报头，加扰MAC报头和HCS进行编码。
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公开(公告)号：KR1020090092688A
公开(公告)日：2009-09-01
申请号：KR1020080127117
申请日：2008-12-15
Applicant: 한국전자통신연구원
CPC classification number: H04B10/1127 , H04B7/10
Abstract: A data transceiving apparatus using the polarization transmission in an LOS wireless communication system and a method thereof are provided to transmit/receive data by using the polarization diversity when transmitting the data by using a directional antenna. A transmitter senses the generation of a data transmitting event(300), requests a polarization setup from a receiver(302), sets up different polarization paths in an antenna(304), and then connects the antenna of the receiver to a polarization path through an antenna training sequence(306). The receiver confirms a transmitting scheme corresponding to the property of transmission data and kinds of provided services(308).
Abstract translation: 提供使用LOS无线通信系统中的极化传输的数据收发装置及其方法，通过使用定向天线发送数据时，通过使用极化分集来发送/接收数据。 发射机感测数据传输事件（300）的生成，从接收机（302）请求偏振设置，在天线（304）中建立不同的极化路径，然后将接收机的天线连接到极化路径，通过 天线训练序列（306）。 接收机确认与发送数据的属性和提供的业务种类相对应的发送方案（308）。
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公开(公告)号：KR1020090062477A
公开(公告)日：2009-06-17
申请号：KR1020070129754
申请日：2007-12-13
Applicant: 한국전자통신연구원
IPC: H04B1/7075
CPC classification number: H04B1/7075 , H04B1/12 , H04L7/041
Abstract: A hybrid despreading device of the direct sequence spread spectrum scheme is provided to perform the dispreading, signal detection, synchronization and transmission frequency error estimation, simply. A spreading code generation unit(120) produces a plurality of the second spreading codes by phase-shifting the first spreading code according to each shifted phase value. A despreading unit(130) produces each despreading value corresponding to the second spreading codes. A maximum despreading value selecting unit(140) selects a despreading value having the largest absolute value among despreading values as the maximum despreading value. A frequency offset estimator(150) estimates the frequency difference between a transmission frequency and a receiving frequency.
Abstract translation: 提供直接序列扩频方案的混合解扩装置，简单地执行分散，信号检测，同步和传输频率误差估计。 扩展码产生单元（120）通过根据每个移位的相位值移相第一扩展码来产生多个第二扩展码。 解扩单元（130）产生对应于第二扩展码的每个去扩展值。 最大解扩值选择单元（140）在解扩值中选择绝对值最大的解扩值作为最大解扩值。 频率偏移估计器（150）估计传输频率和接收频率之间的频率差。
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公开(公告)号：KR1020090024623A
公开(公告)日：2009-03-09
申请号：KR1020080082852
申请日：2008-08-25
Applicant: 한국전자통신연구원
CPC classification number: H04Q11/023 , H04L1/0003 , H04L1/0013 , H04L1/0059 , H04L1/0071 , H04L27/2602 , H04Q2213/13034 , H04Q2213/13098 , H04Q2213/13174 , H04Q2213/13215 , H04Q2213/13216 , H04Q2213/13291
Abstract: A method for constituting a frame for high speed wireless communication and a high speed wireless communication apparatus using the same are provided to perform a high speed data transmission at low system clock speed when implementing a digital circuit. A high speed wireless communication apparatus includes a frame configuration unit(101), a demultiplexer(103), N coding/modulating units(105), and a multiplexer(121). The frame configuration unit comprises the frame including the transmission data. The demultiplexer demultiplexes the transmission data included in the frame into the N parallel streams. The N is an integral number above 2. The N coding/modulating units are connected in parallel. The N coding/modulating units perform the error correction coding and the orthogonal frequency division multiplexing of the N parallel stream. The multiplexer multiplexes the output of the N coding/modulating units to the serial stream.
Abstract translation: 提供一种用于构成用于高速无线通信的帧的方法和使用该帧的高速无线通信装置，以在实现数字电路时以低的系统时钟速度执行高速数据传输。 高速无线通信装置包括帧配置单元（101），解复用器（103），N个编码/调制单元（105）和多路复用器（121）。 帧配置单元包括包括传输数据的帧。 解复用器将包括在帧中的传输数据解复用为N个并行流。 N是2以上的整数。N个编码/调制单元并联。 N个编码/调制单元执行N个并行流的纠错编码和正交频分复用。 多路复用器将N个编码/调制单元的输出复用到串行流。
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公开(公告)号：KR1020090023017A
公开(公告)日：2009-03-04
申请号：KR1020080021373
申请日：2008-03-07
Applicant: 한국전자통신연구원
IPC: H04N19/42
CPC classification number: H04N19/184 , H04N19/46 , H04N19/85
Abstract: An apparatus and a method for uniformly keeping a bit rate of image data are provided to compress image data for each line according to the property of channel and image data and transmit the compressed data so that the bit rate may be maintained uniformly. A bit shifter(11) shifts the bit of line pixel data, and shifts a bit in a right direction according to the depth of an image. A coder(12) outputs a bit stream compressed by compressing the bit-shifted pixel data. A data frame formatter(14) generates a data frame which includes a shift rate of the pixel data, and the data frame further includes the length of bit stream and the bit stream. A FIFO(15) determines the depth of an image, transfers the depth in bit shift, and outputs the data frame to a transmission end.
Abstract translation: 提供均匀地保持图像数据比特率的装置和方法，以根据信道和图像数据的属性来压缩每行的图像数据，并发送压缩数据，使得比特率可以被均匀地维持。 位移器（11）移位行像素数据的位，并根据图像的深度沿正确的方向移位位。 编码器（12）通过压缩位移像素数据输出压缩的比特流。 数据帧格式化器（14）生成包括像素数据的移位速率的数据帧，数据帧还包括比特流的长度和比特流。 FIFO（15）确定图像的深度，以位移方式传送深度，并将数据帧输出到发送端。
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Patent Agency Ranking
公开(公告)号：KR100875927B1
公开(公告)日：2008-12-26
申请号：KR1020070040488
申请日：2007-04-25
Applicant: 한국전자통신연구원
Abstract: An apparatus and a method for compensating for a frequency using a preamble are provided to improve accuracy of calculation for a frequency offset by delaying a received signal with a parallel structure, calculating a phase difference, and calculating an average value. An apparatus for compensating for a frequency using a preamble comprises a signal delaying part(210,211,212), a phase calculating part(213,215,216), an average calculating part(217,218,219), and an averaging part(220). In the signal delaying part, at least one or more delaying parts delaying a received first signal for a predetermined time and outputting the delayed signal are connected sequentially, and outputs at least one or more second signals having a different delay time, respectively. The phase calculating part obtains each pair of complex numbers of the second signals, performs a predetermined operation between each pair of the complex numbers and the first signal for obtaining phase difference, respectively. The average calculating part calculates an average value of the phase differences for a predetermined time. The averaging part calculates an average value for at least one or more average values of the average calculating part, and outputs the average value as a frequency offset.
Abstract translation: 提供了一种使用前导码来补偿频率的设备和方法，以通过以并行结构延迟接收信号，计算相位差并计算平均值来提高频偏的计算精度。 一种使用前导码补偿频率的设备包括信号延迟部分（210,211,212），相位计算部分（213,215,216），平均计算部分（217,218,219）和平均部分（220）。 在信号延迟部分中，至少一个或多个延迟部分将接收到的第一信号延迟预定的时间并输出延迟的信号，并分别依次连接，并分别输出延迟时间不同的至少一个或多个第二信号。 相位计算部分获得每对第二信号的复数，分别在每对复数与用于获得相位差的第一信号之间执行预定操作。 平均计算部分计算预定时间的相位差的平均值。 平均部分计算平均值计算部分的至少一个或多个平均值的平均值，并输出平均值作为频率偏移。
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公开(公告)号：KR1020080052111A
公开(公告)日：2008-06-11
申请号：KR1020060124180
申请日：2006-12-07
Applicant: 한국전자통신연구원
CPC classification number: H04W72/1252 , H04W74/08 , H04W84/12
Abstract: A multiple access system and method using wireless communication are provided to enable all terminal devices to communicate with a controller without the deterioration of a data transmission rate as an access time division method even if the same channel or frequency band is used when high-speed data transmission is performed through connection of the plural terminal devices to one controller in a high-speed communication system using a 60GHz frequency band, thereby enabling the all terminal devices to communicate with the controller at high speed. A multiple access method comprises the following steps of: checking whether a signal is received from a terminal device performing wireless communication using surrounding 60GHz during a competition section(401); determining whether there is a terminal device to be connected to a controller(402); checking the number and type of the terminal device and the total terminal devices previously connected to the controller to update data about the number and type of the terminal devices(403); and updating transmission and reception algorithms based on the updated data(404).
Abstract translation: 提供了使用无线通信的多址系统和方法，以便即使在高速数据时使用相同的信道或频带时，所有终端设备都能够与控制器进行通信，而不会将数据传输速率恶化为接入时分方法 通过使用60GHz频带的高速通信系统中的多个终端装置与一个控制器的连接进行发送，从而能够使所有终端装置以高速与控制器进行通信。 多路访问方法包括以下步骤：在竞争部分（401）期间检查是否从使用周围60GHz执行无线通信的终端设备接收到信号; 确定是否存在要连接到控制器的终端设备（402）; 检查终端设备的数量和类型以及先前连接到控制器的总终端设备，以更新关于终端设备的数量和类型的数据（403）; 以及基于更新的数据更新发送和接收算法（404）。
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公开(公告)号：KR100779102B1
公开(公告)日：2007-11-27
申请号：KR1020060124115
申请日：2006-12-07
Applicant: 한국전자통신연구원
CPC classification number: H04L43/0852 , H04B17/00 , H04L12/28 , H04L41/00
Abstract: An energy detection apparatus in a wireless communication system and a method thereof are provided to exactly catch the reception start point of a signal by lowering a false alarm probability and a detection failure probability using a repetitive preamble structure of an IEEE 802.15.4b system, without increasing the complexity. An energy detection apparatus in a wireless communication system comprises a signal delay part(310), an autocorrelation value calculation part(320), and an average autocorrelation value calculation part(330). The signal delay part(310) comprises a plurality of delays(311,312). The delays(311,312), arranged in serial, respectively delay and output an Rx signal during a certain period. The autocorrelation value calculation part(320) comprises a plurality of autocorrelators(321,322). The autocorrelators(321,322), arranged in parallel, respectively output autocorrelation values between the original Rx signal and the signals delayed from the delays(311,312) of the signal delay part(310). The average autocorrelation value calculation part(330) divides the sum of the output values of the autocorrelators(321,322) by the number of the autocorrelators(321,322) and outputs the average autocorrelation value.
Abstract translation: 提供无线通信系统中的能量检测装置及其方法，通过使用IEEE 802.15.4b系统的重复前导码结构降低虚假警报概率和检测失败概率来精确地捕获信号的接收开始点，而没有 增加复杂性。 无线通信系统中的能量检测装置包括信号延迟部（310），自相关值计算部（320）和平均自相关值计算部（330）。 信号延迟部分（310）包括多个延迟（311,312）。 串行排列的延迟（311,312）在一段时间内分别延迟并输出Rx信号。 自相关值计算部（320）包括多个自相关器（321,322）。 并联布置的自相关器（321,322）分别输出原始Rx信号与从信号延迟部分（310）的延迟延迟（311,312）延迟的信号之间的自相关值。 平均自相关值计算部（330）将自相关器（321,322）的输出值的和除以自相关器（321,322）的数量，并输出平均自相关值。
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公开(公告)号：KR100776678B1
公开(公告)日：2007-11-19
申请号：KR1020060074925
申请日：2006-08-08
Applicant: 한국전자통신연구원
IPC: H04B1/7085
Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
본 발명은, 직접 시퀀스 대역 확산 방식의 무선 피코셀 통신 시스템에서의 채널계수 추정 장치 및 그 방법에 관한 것임.
2. 발명이 해결하려고 하는 기술적 과제
본 발명은, 첫 번째 심벌과 두 번째 심벌의 복소수 합/차 연산을 통해 산출한 합 연산 결과값과 차 연산 결과값을 비교하여 큰 값을 세 번째 심벌에 대한 참조값으로 설정한 후 세 번째 심벌부터 N개 심벌까지 상기 과정을 반복 수행하여 획득한 최종 결과값을 심벌 수(N)로 평균하여 채널계수를 추정함으로써, 높은 성능과 낮은 복잡도를 가지는 직접 시퀀스 대역 확산 방식의 무선 피코셀 통신 시스템에서의 채널계수 추정 장치 및 그 방법을 제공하는데 그 목적이 있음.
3. 발명의 해결방법의 요지
본 발명은, 채널계수 추정 장치에 있어서, 첫 번째 심벌과 두 번째 심벌의 복소수 합/차 연산을 통해 산출한 합 연산 결과값과 차 연산 결과값을 비교하여 큰 값을 세 번째 심벌에 대한 참조값으로 결정하기 위한 초기 참조값 결정수단; 상기 초기 참조값 결정수단에서 결정한 초기 참조값 및 참조값 선택수단에서 선택한 참조값을 저장하기 위한 참조값 저장수단; 세 번째 이후 심벌의 프리엠블 구간에 대한 역확산을 수행하여 주파수 옵셋을 보상하기 위한 역확산수단; 상기 참조값 저장수단에 저장되어 있는 참조값과 상기 역확산수단에서 역확산한 심벌의 복소수 값을 합 연산하기 위한 합 연산수단; 상기 합 연산수단에서 연산한 결과의 제 1 크기값을 산출하기 위한 제 1 크기값 산출수단; 상기 참조값 저장수단에 저장되어 있는 참조값과 상기 역확산수단에서 역확산한 심벌의 복소수 값을 차 연산하기 위한 차 연산수단; 상기 차 연산수단에서 연산한 결과의 제 2 크기값을 산출하기 위한 제 2 크기값 산출수단; 상기 제 1 크기값과 상기 제 2 크기값을 비교하여 큰 값을 참조값으로 선택하기 위한 상기 참조값 선택수단; 및 상기 참조값 선택수단에서 선택한 최종 참조값을 전체 심벌 수로 나누어 해당 채널의 계수를 추정하기 위한 채널계수 추정수단을 포함함.
4. 발명의 중요한 용도
본 발명은 채널계수 추정 등에 이용됨.
무선 피코셀 통신 시스템(Wireless Pico cell System), 채널계수 추정(Channel Estimation), 지연 확산(Delay Spread), 역확산, 참조값, 복소수 합/차 연산Abstract translation: 提供了一种用于估计DSSS（直接序列扩频）无线微微小区通信系统中的信道系数的装置和方法，以通过估计准确的信道特性值来提高系统性能并降低复杂度。 初始参考值选择单元比较通过加/减第一和第二符号的复数获得的相加结果值和减法结果值，选择较大值作为第三符号的参考值，并将其存储在参考值存储 单元（501）。 解扩单元在第三符号之后的前导码间隔执行解扩以补偿频率偏移（502）。 添加单元将存储的参考值和扩展符号（503）的复数值相加。 第一尺寸值计算单元计算加法结果的第一尺寸值（504）。 减法单元从解扩符号（505）的复数值中减去所存储的参考值。 第二尺寸值计算单元计算减法结果（506）的第二尺寸值。 参考值选择单元比较第一和第二大小值，并选择较大的值作为下一个符号的参考值（507）。 信道系数估计单元对整个符号重复执行处理，并且将所选择的最终参考值除以整个符号的数量，以估计相应信道的系数（508）。
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公开(公告)号：KR1020070061249A
公开(公告)日：2007-06-13
申请号：KR1020060074925
申请日：2006-08-08
Applicant: 한국전자통신연구원
IPC: H04B1/7085
CPC classification number: H04B1/7085 , H04B1/711 , H04B2201/70707
Abstract: An apparatus and a method for estimating a channel coefficient in a DSSS(Direct Sequence Spread Spectrum) wireless pico cell communication system are provided to improve system performance and reduce complexity by estimating an accurate channel characteristics value. An initial reference value selecting unit compares an add result value and a subtraction result value obtained by adding/subtracting complex of the first and second symbols, selects a larger value as a reference value of the third symbol, and stores it in a reference value storage unit(501). A despreading unit performs despreading on a preamble interval of symbols after the third symbol to compensate a frequency offset(502). An adding unit adds the stored reference value and the complex values of the spread symbol(503). The first size value calculating unit calculates the first size value of the adding result(504). The subtracting unit subtracts the stored reference value from the complex value of the despread symbol(505). The second size value calculating unit calculates the second size value of the subtraction result(506). A reference value selecting unit compares the first and second size values and selects a larger value as a reference value of the next symbol(507). A channel coefficient estimating unit repeatedly performs the process on the entire symbols and divides the selected final reference value by the number of entire symbols to estimate a coefficient of a corresponding channel(508).
Abstract translation: 提供了一种用于估计DSSS（直接序列扩频）无线微微小区通信系统中的信道系数的装置和方法，以通过估计准确的信道特性值来提高系统性能并降低复杂度。 初始参考值选择单元比较通过加/减第一和第二符号的复数获得的相加结果值和减法结果值，选择较大值作为第三符号的参考值，并将其存储在参考值存储 单元（501）。 解扩单元在第三符号之后的前导码间隔执行解扩以补偿频率偏移（502）。 添加单元将存储的参考值和扩展符号（503）的复数值相加。 第一尺寸值计算单元计算加法结果的第一尺寸值（504）。 减法单元从解扩符号（505）的复数值中减去所存储的参考值。 第二尺寸值计算单元计算减法结果（506）的第二尺寸值。 参考值选择单元比较第一和第二大小值，并选择较大的值作为下一个符号的参考值（507）。 信道系数估计单元对整个符号重复执行处理，并且将所选择的最终参考值除以整个符号的数量，以估计相应信道的系数（508）。
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