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    • 4. 发明公开
    • 직접 시퀀스 확산 대역 버스트 무선 통신 시스템에서타이밍 동기를 획득하는 장치
    • 用于在直接序列传播频谱波段无线通信系统中获取时序同步的装置
    • KR1020070027060A
    • 2007-03-09
    • KR1020050079429
    • 2005-08-29
    • 한화시스템 주식회사
    • 김기윤김석중배대랑도주현최형진
    • H04B1/7073
    • A device for acquiring timing synchronization in a direct-sequence spread-spectrum burst wireless communication system is provided to carry out PN(Pseudo Noise) code acquisition without using a timing tracker, thereby improving transmission efficiency through reduction in a preamble signal required for timing synchronization and reduction in complexity. A carrier demodulator(400) down-converts a receiving signal by a carrier frequency. A sampling unit(410) conducts a sampling process for the demodulated receiving signal in 8 ratios per chip section. A receiving RRC(Radio Resource Control) filtering unit(420) filters the sampled signal. A PN searcher(440) carries out a PN code tracking process by a matched filter from the filtered signal. A data demodulator(430) directly demodulates the sampled receiving signal without interpolation and decimator processing.
    • 提供了一种用于在直接序列扩频突发无线通信系统中获取定时同步的装置,用于在不使用定时跟踪器的情况下执行PN(伪噪声)码获取,从而通过减少定时同步所需的前置信号来提高传输效率 并减少复杂性。 载波解调器(400)将载波频率的接收信号下变频。 采样单元(410)以每个芯片部分8个比率对解调的接收信号进行采样处理。 接收RRC(Radio Resource Control,无线资源控制)滤波单元420对采样信号进行滤波。 PN搜索器(440)根据滤波信号通过匹配滤波器执行PN码跟踪处理。 数据解调器(430)直接解调采样的接收信号而不进行插值和抽取处理。
    • 5. 发明公开
    • 이동통신장치의 프레임동기신호 발생장치
    • 移动无线终端和产生帧同步信号的方法
    • KR1020040003226A
    • 2004-01-13
    • KR1020020037868
    • 2002-07-02
    • 한화시스템 주식회사
    • 함창식정성헌김석중태현식
    • H04L7/00
    • H04L7/046H04L7/042
    • PURPOSE: A mobile wireless terminal and a method for generating a frame synchronization signal are provided to reduce the detection error by performing a preamble detection at a preamble detector and confirming a frame synchronization pattern at a frame synchronization pattern detector. CONSTITUTION: An input unit divides a data frame received from a base station into frames passing through an I-channel and a Q-channel to receive the frames. A preamble detector(210) detects timing information of the base station from a preamble pattern of the frames. A frame synchronization pattern detector(220) receives the frame passing through the I-channel and an output of the preamble detector(210) to confirm the timing information. A frame synchronization signal generator generates a frame synchronization signal according to the output of the frame synchronization pattern detector(220). A register(240) stores a critical value or coefficient required in the preamble detector(210) and the frame synchronization pattern detector(220).
    • 目的:提供移动无线终端和用于产生帧同步信号的方法,以通过在前同步码检测器处执行前同步码检测并在帧同步模式检测器处确认帧同步模式来减少检测误差。 构成:输入单元将从基站接收的数据帧划分成通过I信道和Q信道的帧以接收帧。 前导码检测器(210)从帧的前导码模式检测基站的定时信息。 帧同步模式检测器(220)接收通过I信道的帧和前同步码检测器(210)的输出,以确认定时信息。 帧同步信号发生器根据帧同步模式检测器(220)的输出产生帧同步信号。 寄存器(240)存储前导检测器(210)和帧同步模式检测器(220)中所需的临界值或系数。
    • 6. 发明公开
    • 이동형 중계국 주행 경로 설정 방법
    • 移动中继站设置驱动路径的方法
    • KR1020150033382A
    • 2015-04-01
    • KR1020130113327
    • 2013-09-24
    • 한화시스템 주식회사
    • 이지훈이미경김형기김석중
    • H04W24/02H04W16/26
    • H04W16/26H04W24/02H04W88/04
    • 본발명은이동형중계국의주행경로를설정하는방법에관한것으로서, 기지국과단말기사이에서통신링크를중계하는이동형중계국의주행경로를설정하는방법이다. 본발명의실시형태는기지국주변의복수의구간시작점마다측정한전파세기를전파세기데이터값으로서위치정보와함께저장한전파환경데이터베이스를생성하는전파환경데이터베이스생성과정; 초기주행경로를따라이동형중계국의주행이이루어질때, 이동형중계국의수신신호의전파세기를측정하여측정전파세기값으로도출하는측정전파세기값도출과정; 측정한측정전파세기값을상기전파환경데이터베이스에서추출한전파세기데이터값과비교하여상기초기주행경로를그대로유지할지, 아니면새로운주행경로를설정할지를결정하는주행경로재설정과정;을포함한다.
    • 本发明涉及一种用于设置中继基站和终端之间的通信链路的移动中继站的驱动路径的方法。 根据本发明的实施例,所述方法包括:无线电波环境数据库创建步骤,通过存储在基站周围的每个部分开始点测量的无线电波的强度值来创建无线电波环境数据库,作为无线电波强度数据值 和位置信息在一起; 测量的无线电波强度值减除步骤,通过测量移动中继站沿着初始驱动路径移动时由移动中继站接收的信号的无线电波强度来推定测量的无线电波强度值; 以及驱动路径重新设定步骤,用于通过将测量的无线电波强度值与从无线电波环境数据库中提取的无线电波强度数据值进行比较来确定是否保持初始驱动路径,或者设置新的驱动路径。
    • 7. 发明授权
    • 알에프아이디 시스템에 있어서의 심볼 검출방법
    • 在这种情况下,我们需要一个合适的解决方案
    • KR100736228B1
    • 2007-07-06
    • KR1020060038849
    • 2006-04-28
    • 한화시스템 주식회사
    • 김기윤이유신김석중김현도조병창최형진
    • G06K17/00H04B5/02
    • A method for detecting a symbol in an RFID system is provided to increase reception reliability of an RFID reader by using zero crossing instead of the number of peak of a signal. A DC offset is removed from a tag response signal transmitted to the reader from the RFID tag(501). A moving average is performed to reduce effect of noise included in the DC offset-removed signal(502). A phase offset is compensated from the averaged signal(503). The symbol is detected from the phase offset-removed signal by using a predetermined algorithm(504). The algorithm determines whether the symbol is 0 or 1 depending on a count of a zero-crossing by counting whether the phase offset-removed signal crosses 0. If the phase offset-removed signal crosses zero twice, the symbol is determined as 0. If the phase offset-removed signal crosses zero by four times, the symbol is determined as 1.
    • 提供了一种用于检测RFID系统中的符号的方法,以通过使用零交叉来代替信号的峰值数目来提高RFID读取器的接收可靠性。 从RFID标签(501)发送到读取器的标签响应信号中去除DC偏移。 执行移动平均以降低包括在DC偏移消除信号(502)中的噪声的影响。 从平均信号补偿相位偏移(503)。 通过使用预定算法从相位偏移消除信号中检测符号(504)。 该算法根据零交叉的计数通过计算相位偏移消除的信号是否越过0来确定符号是0还是1。如果消除了相位偏移的信号两次过零,则该符号被确定为0.如果 去掉相位偏移的信号通过零四次,符号被确定为1。
    • 8. 发明授权
    • 표적 식별을 위한 질문 응답 확인 방법
    • 표적을을위한질문응답확인방법
    • KR100649267B1
    • 2006-11-24
    • KR1020050079493
    • 2005-08-29
    • 한화시스템 주식회사
    • 김기윤김석중
    • F41G9/00F41G3/00F41J2/00
    • A question/response checking method for recognizing a target is provided to quickly and accurately draw results from question/response recognition when a question/response checking system is interlocked with a distance measurer. A question/response checking method for recognizing a target comprises the steps for obtaining information about distance to the target from a distance measurer(110) according to commands to check question/response; producing modulated signals and question signals at a question/response checking device(120) and transmitting the question signals to the target; detecting distance about the target out of response signals about the question signals; and comparing the measured distance with the distance detected from the response signals and thereby recognizing the target. The distance measurement uses regression delay time for returning after transmitting the question signals.
    • 当问题/响应检查系统与距离测量器联锁时,提供用于识别目标的问题/响应检查方法以快速并准确地从问题/响应识别中提取结果。 用于识别目标的问题/响应检查方法包括以下步骤:根据检查问题/响应的命令从距离测量器(110)获得关于到目标的距离的信息; 在问题/响应检查装置(120)产生调制信号和问题信号,并将问题信号发送给目标; 检测关于所述问题信号的响应信号的距离; 并将测得的距离与从响应信号中检测的距离进行比较,从而识别目标。 距离测量使用回归延迟时间来发送问题信号后返回。
    • 9. 发明公开
    • 셀룰러 통신 시스템
    • 细胞通信系统
    • KR1020030090169A
    • 2003-11-28
    • KR1020020028170
    • 2002-05-21
    • 한화시스템 주식회사
    • 조형원김석중정성헌태현식
    • H04B1/40
    • H04L27/18H04B1/40H04L27/01
    • PURPOSE: A cellular communication system is provided to execute baseband modulation/demodulation through a digital signal processor and to improve call quality by adapting an FQPSK(Filtered Quadrature Phase Shift Keying) method, a constant envelope modulation method. CONSTITUTION: A transmitting digital signal processor(201) inserts a specific pattern, required for time synchronization and channel equalization in a receiving part, into inputted transmission data, creates packetized data, and modulates the packetized data in a FQPSK method. An IF(Intermediate Frequency) modulator(202) modulates the FQPSK-modulated signal into an IF signal. The IF-modulated signal is converted into an analog signal through a digital/analog converter(203). The first combiner(204) combines the primary analog IF transmission signal with the output of a transmitting primary local frequency generator(205) and outputs a secondary IF signal. The second combiner(206) combines the secondary IF signal with the output of a transmitting secondary local hopping frequency combiner(207), and the combined signal is loaded on a carrier wave. The transmission signal loaded on the carrier wave is amplified by a power amplifier(209) and sent through a transmitting/receiving switching part(210) and an antenna(219).
    • 目的:提供一种蜂窝通信系统,通过数字信号处理器执行基带调制/解调,并通过适应一种恒定包络调制方式的FQPSK(滤波正交相移键控)方法来提高呼叫质量。 构成:发送数字信号处理器(201)将接收部分中的时间同步和信道均衡所需的特定模式插入到输入的发送数据中,创建分组数据,并以FQPSK方式调制分组数据。 IF(中频)调制器(202)将FQPSK调制信号调制成IF信号。 IF调制信号通过数/模转换器(203)转换为模拟信号。 第一组合器(204)将主模拟IF传输信号与发射主要本地频率发生器(205)的输出组合并输出次级IF信号。 第二组合器(206)将次级IF信号与发射次局部跳频合成器(207)的输出组合,并且组合信号被加载在载波上。 负载在载波上的发送信号由功率放大器(209)放大并通过发送/接收切换部分(210)和天线(219)发送。