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公开(公告)号：KR100453696B1
公开(公告)日：2004-10-20
申请号：KR1020020027937
申请日：2002-05-20
Applicant: 전자부품연구원
IPC: H04L27/26
Abstract: PURPOSE: An improved method for estimating a frequency offset of a mobile communication system is provided to obtain a diversity gain and improve the accuracy of the frequency estimation by combining estimated values of each frequency offset. CONSTITUTION: An estimating process of frequency offset is performed in each sub channel, respectively. A frequency offset combination process is performed to combine the estimated values of each frequency offset. A mobile communication system is formed with a multi-input/output channel modulation system, a transmission diversity system, a multi-code division multi-access system or a binary code division multi-access system. The multi input/output channel modulation system or transmission diversity system perform a frequency offset estimation process by using a predetermined mathematical expression.
Abstract translation: 目的：提供一种用于估计移动通信系统的频率偏移的改进方法，以获得分集增益并通过组合每个频率偏移的估计值来提高频率估计的准确度。 构成：频率偏移的估计过程分别在每个子信道中执行。 执行频率偏移组合处理以组合每个频率偏移的估计值。 移动通信系统由多输入/输出信道调制系统，发送分集系统，多码分多址系统或二进制码分多址系统构成。 多输入/输出信道调制系统或传输分集系统通过使用预定的数学表达式来执行频偏估计过程。
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公开(公告)号：KR1020030089995A
公开(公告)日：2003-11-28
申请号：KR1020020027936
申请日：2002-05-20
Applicant: 전자부품연구원
IPC: H04L27/26
Abstract: PURPOSE: A method for interpolating a frequency and a phase offset to improve resolution of DFT(Discrete Fourier Transform) and FFT(Fast Fourier Transform) is provided to improve the frequency of DFT algorithm and the phase resolution without increasing a DFT size by using an internally dividing point. CONSTITUTION: A sampling process is performed to sample received signals according to a predetermined period(101). The received data stream is converted to a frequency area to obtain a frequency spectrum(102). Two continuous samples having the maximum sum are selected from continuous samples of the frequency area(103). A fine frequency offset is estimated by using an internally dividing point of the selected samples(104). A total frequency offset is obtained by adding a coarse frequency offset to the estimated fine frequency offset(105).
Abstract translation: 目的：提供一种用于内插频率和相位偏移以提高DFT（离散傅里叶变换）和FFT（快速傅里叶变换）分辨率的方法，以通过使用DFT算法来提高DFT算法的频率和相位分辨率，而不会增加DFT大小 内部分界。 构成：执行采样处理以根据预定周期对接收到的信号进行采样（101）。 将接收的数据流转换为频率区域以获得频谱（102）。 从频率区域（103）的连续样本中选择具有最大和的两个连续样本。 通过使用所选择的样本（104）的内部分割点来估计精细的频率偏移。 通过将粗频率偏移与估计的精细频率偏移（105）相加来获得总频率偏移。
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公开(公告)号：KR1020030089102A
公开(公告)日：2003-11-21
申请号：KR1020020027140
申请日：2002-05-16
Applicant: 전자부품연구원
IPC: H04B7/00
CPC classification number: H04J13/004 , H04B1/04 , H04B1/707 , H04B2201/70706
Abstract: PURPOSE: A device for transmitting data in a wireless mobile communication system is provided to clip a multi-level signal generated in an MC(Multi Code) system by combining a VSG(Variable Spreading Gain) system with the MC system, and to maintain MC orthogonality, thereby implementing high speed transmissions. CONSTITUTION: A serial/parallel converter(100) converts serial data into parallel data. An adder(102) multiplies the parallel data by an orthogonal code, and adds code signals. A level clipping unit(104) clips a signal more than a certain level among the added code signals. A QPSK modulator(106) transmits residual level signals remaining by a clipping operation of the level clipping unit(104) via a QPSK process. A data transmission device clips a multi-level signal generated in an MC system by combining a VSG system with the MC system, and maintains MC orthogonality requested in the VSG system.
Abstract translation: 目的：提供一种用于在无线移动通信系统中发送数据的设备，通过将VSG（可变扩频增益）系统与MC系统相结合来对MC（Multi Code）系统中生成的多级信号进行钳位，并维护MC 正交性，从而实现高速传输。 构成：串行/并行转换器（100）将串行数据转换为并行数据。 加法器（102）将并行数据乘以正交码，并加上代码信号。 电平限幅单元（104）在所添加的码信号之间剪辑超过一定电平的信号。 QPSK调制器（106）通过QPSK处理发送通过电平限幅单元（104）的削波操作剩余的剩余电平信号。 数据传输装置通过将VSG系统与MC系统组合来剪辑在MC系统中产生的多级信号，并且维护在VSG系统中请求的MC正交性。
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公开(公告)号：KR1020130032951A
公开(公告)日：2013-04-03
申请号：KR1020110096688
申请日：2011-09-26
Applicant: 전자부품연구원
CPC classification number: H04B7/026 , H04B7/15592
Abstract: PURPOSE: A method for selecting an optimal delivery terminal in a bidirectional cooperative communication network is provided to select a delivery terminal which minimizes an outage probability in the bidirectional cooperative communication network including two source terminals and the delivery terminal. CONSTITUTION: Relay node adding-up receiving power which is the sum of first relay receiving power for a first signal and second relay receiving power for a second signal is calculated. A first via signal-to-noise ratio for a first signal passing via a relay node(R) and a second via signal-to-noise ratio for a second signal passing via the relay node are calculated by using the first relay receiving power and the second relay receiving power. The channel capacity of each relay node is calculated by using a signal-to-noise ratio, the first via signal-to-noise ratio, and the second via signal-to-noise ratio. The outage probability of each relay node is calculated by using the channel capacity.
Abstract translation: 目的：提供一种在双向协作通信网络中选择最佳传送终端的方法，以选择最小化包括两个源终端和传送终端在内的双向协作通信网络中的中断概率的传送终端。 组成：计算作为第一信号的第一中继接收功率和第二信号的第二中继接收功率之和的中继节点相加接收功率。 通过使用第一中继接收功率来计算经由中继节点（R）的第一信号的第一通信信噪比和用于经由中继节点通过的第二信号的第二通路信噪比 第二个继电器接收电力。 通过使用信噪比，第一通路信噪比和第二通路信噪比来计算每个中继节点的信道容量。 通过使用信道容量来计算每个中继节点的中断概率。
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公开(公告)号：KR1020120055275A
公开(公告)日：2012-05-31
申请号：KR1020100116913
申请日：2010-11-23
Applicant: 전자부품연구원
CPC classification number: Y02D70/34 , H04B7/15592 , H04B7/2606 , H04W88/04
Abstract: PURPOSE: A cooperative communication method using a relay node in a cooperative communication network is provided to maximize a channel capacity by selecting a relay node and changing the order of relay nodes in a unidirectional cooperative communication network. CONSTITUTION: A channel capacity between the source node and the destination node is calculated using transmission power about a channel set between a source node and a relay node and transmission power for a channel set between the relay node and a destination node. A relay node for signal transmission is selected by comparing the calculated channel capacities according to each relay node.
Abstract translation: 目的：提供一种在协作通信网络中使用中继节点的协作通信方法，通过选择中继节点并改变单向协作通信网络中的中继节点的顺序来最大化信道容量。 构成：使用关于在源节点和中继节点之间设置的信道的发射功率以及在中继节点和目的地节点之间设置的信道的传输功率来计算源节点和目的地节点之间的信道容量。 通过根据每个中继节点比较计算的信道容量来选择用于信号传输的中继节点。
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Patent Agency Ranking
公开(公告)号：KR1020120055274A
公开(公告)日：2012-05-31
申请号：KR1020100116912
申请日：2010-11-23
Applicant: 전자부품연구원
Abstract: PURPOSE: A cooperative communication method for maximizing a channel capacity in a cooperative communication network is provided to maximize a channel capacity in the cooperative communication network which includes one source node, one relay node, and destination nodes. CONSTITUTION: A destination terminal calculates output of the maximum ratio combination using an SNR(Signal to Noise Raito) about a channel set between a source node and a relay node, an SNR of a channel set between the relay node and a destination node, and an SNR about a channel set between the source node and the destination node. The destination terminal calculates a channel capacity using the calculated out of the maximum ratio combination.
Abstract translation: 目的：提供一种用于使协作通信网络中的信道容量最大化的协作通信方法，以最大化包括一个源节点，一个中继节点和目的节点的协作通信网络中的信道容量。 构成：目的地终端使用关于源节点和中继节点之间设置的信道的SNR（信噪比Raito）来计算最大比组合的输出，中继节点和目的地节点之间设置的信道的SNR，以及 关于在源节点和目的地节点之间设置的信道的SNR。 目的地终端使用最大比率组合中计算的计算信道容量。
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公开(公告)号：KR100615628B1
公开(公告)日：2006-08-25
申请号：KR1020040110178
申请日：2004-12-22
Applicant: 전자부품연구원
IPC: H04L27/18
Abstract: 본 발명은 다중코드 코드분할 다중접속 시스템의 QAM 변조 방법 및 복조 방법에 관한 것으로서, 송신단은 입력 비트를 부호화한 정진폭 다중부호 이진직교 변조(CACB; constant amplitude multi-code biorthogonal modulation)를 이용하여 전송심볼의 크기가 일정하게 만든 신호를 QAM 부호화하여 전송속도를 높인다. 수신단은 수신 신호로부터 QAM 연판정기 블록을 거쳐 생성된 신호를 CACB 복호화기를 거쳐 데이터를 복조한다. 본 발명에 따르면, 일반적인 다중코드 코드분할 다중접속 시스템에 비해 대역폭 효율을 크게 개선시킬 수 있고, 이에 따라 전송 속도의 향상을 도모할 수 있다.
정진폭 이진 직교 변조, 다중코드 코드분할 다중접속 시스템, QAM 부호화, QAM 연판정기Abstract translation: 本发明涉及一种多码分码多址（CDMA）系统的QAM调制方法和解调方法，其中发射机使用恒幅多码双正交调制（CACB） 具有恒定符号大小的信号是QAM编码以增加传输速率。 接收器通过CACB解码器解调通过QAM准稳态块从接收信号产生的信号。 根据本发明，与一般的多码码分多址系统相比，带宽效率可以大大提高，从而提高了传输速度。
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公开(公告)号：KR100458902B1
公开(公告)日：2004-12-03
申请号：KR1020020019652
申请日：2002-04-11
Applicant: 전자부품연구원
IPC: G06Q50/20
Abstract: PURPOSE: A device and a method for an education service through a physical growth model using the Internet and the wireless communication are provided to enhance the interest and the learning concentration of child by constructing a robot base, a house, and a castle gradually according to a learning step, and giving a gift as completing the growth model when a final education object is reached. CONSTITUTION: A learning data storing part(250) stores the learning data. An education part(230) performs the gradual education according to a preset learning step. A test part(240) performs a test after finishing the education of the education part(230), and elevates the learning step by one step according to a test result. A controller(220) outputs a control signal to grow the physical growth model according to the learning step, and transfers the gift if the learning step passes a final learning step. A gift giving device(400) grows the physical growth model and gives the gift according to the control of the controller(220).
Abstract translation: 目的：提供一种通过使用因特网和无线通信的身体成长模型的教育服务的装置和方法，以通过逐渐构建机器人基地，房屋和城堡来提高儿童的兴趣和学习集中度 一个学习步骤，并在达到最终教育对象时赠送一份完成增长模式的礼物。 构成：学习数据存储部分（250）存储学习数据。 教育部分（230）根据预设的学习步骤执行渐进式教育。 测试部分（240）在完成教育部分（230）的教育之后执行测试，并且根据测试结果将学习步骤提升一步。 控制器（220）根据学习步骤输出控制信号以生长物理生长模型，并且如果学习步骤通过最终学习步骤则传送礼物。 礼物赠送装置（400）根据控制器（220）的控制来生长物理生长模型并给予礼物。
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公开(公告)号：KR1020030096905A
公开(公告)日：2003-12-31
申请号：KR1020020034001
申请日：2002-06-18
Applicant: 전자부품연구원
CPC classification number: H04B1/18 , H04B1/04 , H04B2001/0491 , H04L27/2647
Abstract: PURPOSE: A home RF system using channel estimation and DC offset compensation methods is provided to estimate a channel by using a TS(Training Sequence) field and a decision feedback method of a PDU, and to compensate for a DC offset by using the TS, thereby improving performance. CONSTITUTION: A transmission unit comprises as follows. A scrambler(100) changes a frequency. A symbolizer(200) symbolizes a bit-unit signal. An encoder(300) encodes a transmission signal. A TS field adder(400) adds a TS field to the transmission signal. An FSK(Frequency Shift Keying) modulator(500) changes a frequency of a high frequency current into a signal. A receiving unit comprises as follows. An FSK demodulator(600) compensates a DC offset. A decoder(700) decodes the encoded signal. A desymbolizer(800) desymbolizes the symbolized signal. A descrambler(900) restores the changed frequency.
Abstract translation: 目的：提供使用信道估计和DC偏移补偿方法的家庭RF系统，通过使用PDU（训练序列）字段和PDU的决策反馈方法来估计信道，并通过使用TS来补偿DC偏移， 从而提高性能。 构成：发送单元包括如下。 加扰器（100）改变频率。 符号（200）表示位单位信号。 编码器（300）对发送信号进行编码。 TS字段加法器（400）将TS字段加到发送信号上。 FSK（频移键控）调制器（500）将高频电流的频率改变为信号。 接收单元包括如下。 FSK解调器（600）补偿DC偏移。 解码器（700）对编码的信号进行解码。 符号化装置（800）对符号信号进行符号化。 解扰器（900）恢复改变的频率。
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公开(公告)号：KR1020030090826A
公开(公告)日：2003-12-01
申请号：KR1020020028412
申请日：2002-05-22
Applicant: 전자부품연구원
IPC: H04B1/06
CPC classification number: H04H20/47 , H04H40/36 , H04H2201/13 , H04H2201/40
Abstract: PURPOSE: An apparatus for transmitting and receiving data in a digital radio, a data control system thereof, and a data control method thereof are provided to control various devices which work for the profitability of public or private companies by digital data transmitted through a digital broadcasting. CONSTITUTION: An OFDM(Orthogonal Frequency Division Multiplexing) modulator(110) uses input channels having an acoustic broadcasting channel(C1), a public control service channel(C2) and a profit company service channel(C3), and modulates acoustic broadcasting data, public control data and public company data to be suitable for a digital broadcasting. An up-converter(120) broadcasts the data modulated in the OFDM modulator(110) through a dynamic frequency conversion operation.
Abstract translation: 目的：提供一种用于在数字无线电中发送和接收数据的装置，其数据控制系统及其数据控制方法，用于通过数字广播发送的数字数据来控制各种用于公共或私营公司盈利的设备 。 构成：OFDM（正交频分复用）调制器（110）使用具有声音广播信道（C1），公共控制服务信道（C2）和利润公司服务信道（C3）的输入信道，并且调制声音广播数据， 公共控制数据和上市公司数据适合数字广播。 上变频器（120）通过动态频率转换操作广播在OFDM调制器（110）中调制的数据。
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