公开(公告)号：KR1020030082103A

公开(公告)日：2003-10-22

申请号：KR1020020020653

申请日：2002-04-16

Applicant: 한국전자통신연구원

Inventor： 이재호 ,  정해원 ,  이형호

IPC: H04J11/00

CPC classification number: H04L27/2601 ,  H04L1/0013 ,  H04L1/0071 ,  H04L27/01

Abstract: PURPOSE: A device for modulating and demodulating a base band at a bluetooth system by using an orthogonal frequency division multiplexing(OFDM) is provided to supply a high speed variable data rate at the bluetooth system and to apply the bluetooth system requiring the high speed data rate. CONSTITUTION: A device for modulating and demodulating a base band at a bluetooth system by using an orthogonal frequency division multiplexing(OFDM) includes an OFDM modulating block(2), an OFDM modulating control block(200), an OFDM demodulating block(3) and an OFDM demodulating control block(300). In the device, the OFDM modulating block(2) modulates the data transmitted from the link manager to at a variable data rate by the OFDM method. The OFDM modulating control block(200) controls the OFDM modulating block(2) in response to the variable data rate assigned at the link manager and controls the output power of radio frequency. The OFDM demodulating block(3) extracts the variable data rate from the OFDM signal received as the radio frequency and demultiplexes the received data by the variable data rate to transmit the demultiplexed data to the link manage. And, the OFDM demodulating control block(300) controls the OFDM demodulating block(3) in response to the extracted variable data rate and reduces the power consumption of the OFDM demodulating block(3) by comparing the data rate used at the OFDM modulating block(2).

Abstract translation: 目的：提供一种通过使用正交频分复用（OFDM）来调制和解调蓝牙系统的基带的装置，以在蓝牙系统提供高速可变数据速率并应用需要高速数据的蓝牙系统 率。 构成：通过使用正交频分复用（OFDM）来调制和解调蓝牙系统的基带的装置包括OFDM调制块（2），OFDM调制控制块（200），OFDM解调块（3） 和OFDM解调控制块（300）。 在该装置中，OFDM调制块（2）通过OFDM方式将从链路管理器发送的数据调制为可变数据速率。 OFDM调制控制块（200）响应于在链路管理器处分配的可变数据速率来控制OFDM调制块（2）并控制射频的输出功率。 OFDM解调块（3）从作为射频接收的OFDM信号中提取可变数据速率，并且通过可变数据率对接收到的数据进行解复用，以将解复用的数据发送到链路管理。 并且，OFDM解调控制块（300）响应于所提取的可变数据速率控制OFDM解调块（3），并且通过比较OFDM调制块中使用的数据速率来降低OFDM解调块（3）的功耗 （2）。

公开(公告)号：KR100383666B1

公开(公告)日：2003-05-14

申请号：KR1020000081018

申请日：2000-12-23

Applicant: 한국전자통신연구원

Inventor： 박봉혁 ,  한석용 ,  정해원 ,  이형호

IPC: H03F3/20

Abstract: PURPOSE: A radio frequency(RF) power amplifier using a feedback circuit and a method for designing the same are provided, which is designed by finding a peak output power point due to an output power change according to an input power of a whole power amplifier circuit, after stabilizing an unstable amplifier device using the feedback circuit in a radio frequency band. CONSTITUTION: A feedback circuit(201) comprising a resistor and a capacitor is arranged in parallel with an amplifier device in an amplification part, and an input matching circuit(301) and an output matching circuit(303) for matching signals are connected to an input port and an output port of the amplifier device respectively. The amplifier part is divided into the first amplification stage constituted with one amplifier device and one feedback circuit, and the second amplification stage constituted with a plurality of amplifier devices and feedback circuits. The plurality of amplifier devices of the second amplification stage are arranged in parallel. The feedback circuit of the second amplification stage is arranged in two amplifier devices one by one.

Abstract translation: 目的：提供一种使用反馈电路的射频（RF）功率放大器及其设计方法，其通过根据整个功率放大器的输入功率找出由于输出功率变化而引起的峰值输出功率点 在使用无线电频带中的反馈电路来稳定不稳定的放大器装置之后。 构成：包括电阻和电容的反馈电路（201）与放大器装置并联放置在放大部件中，用于匹配信号的输入匹配电路（301）和输出匹配电路（303）连接到 输入端口和放大器装置的输出端口。 放大器部分被分成由一个放大器装置和一个反馈电路构成的第一放大级，以及由多个放大器装置和反馈电路构成的第二放大级。 第二放大级的多个放大器器件并联布置。 第二放大级的反馈电路一个接一个地安排在两个放大器装置中。

公开(公告)号：KR1020020047542A

公开(公告)日：2002-06-22

申请号：KR1020000076013

申请日：2000-12-13

Applicant: 한국전자통신연구원

Inventor： 박봉혁 ,  정해원 ,  이형호

IPC: H04B1/40

CPC classification number: H04B1/48 ,  H04B1/405 ,  H04B17/318 ,  H04B2001/485

Abstract: PURPOSE: A wireless radio frequency front end transceiver device is provided to stop a transmission mode when operating a reception mode by using a power down mode. CONSTITUTION: A local signal generating unit(270) includes the first and second local signal generators(272,276) which generates the first and second local signals having predetermined bandwidths at the center of 900MHz and 4.35GHz. A first upstream change unit(230) changes data signal inputted from a baseband into an intermediate frequency signal by using the local signal of 900MHz bandwidth from the first local signal generator(272). A second upstream change unit(240) combines the signal changed by the first upstream change unit(230) with a local signal of 4.35GHz bandwidth generated by the second local signal generator(276) and then changes the combined signal into RF signal. A band-pass filter(210) removes noise signals in the RF signal and the data signal received by an antenna(200). A transmission/reception mode selection switch(220) selects the one whether the output data of the second upstream change unit(240) is transmitted or the received data signal is inputted. A first downstream change unit(250) combines the data signal inputted from the band-pass filter(210) with a local signal of 4.35GHz bandwidth generated by the second local signal generator(276) and then changes the combined signal into an intermediate frequency signal. A second downstream change unit(260) changes the inputted intermediate frequency into a baseband I/Q(In-phase/Quadrature-phase) signal by using the local signal of 900MHz bandwidth generated by the first local signal generator(272).

Abstract translation: 目的：提供无线射频前端收发器设备，通过使用掉电模式来操作接收模式时停止发送模式。 构成：本地信号发生单元（270）包括第一和第二本地信号发生器（272,276），其产生在900MHz和4.35GHz的中心处具有预定带宽的第一和第二本地信号。 第一上游改变单元（230）通过使用来自第一本地信号发生器（272）的900MHz带宽的本地信号将从基带输入的数据信号改变为中频信号。 第二上游改变单元（240）将由第一上游改变单元（230）改变的信号与由第二本地信号发生器（276）产生的4.35GHz带宽的本地信号组合，然后将组合信号改变为RF信号。 带通滤波器（210）去除RF信号中的噪声信号和由天线（200）接收的数据信号。 发送/接收模式选择开关（220）选择发送第二上游改变单元（240）的输出数据还是输入接收到的数据信号。 第一下游改变单元（250）将从带通滤波器（210）输入的数据信号与由第二本地信号发生器（276）产生的4.35GHz带宽的本地信号组合，然后将组合信号改变为中频 信号。 第二下游改变单元（260）通过使用由第一本地信号发生器（272）产生的900MHz带宽的本地信号将输入的中频改变为基带I / Q（同相/正交相位）信号。

公开(公告)号：KR100336496B1

公开(公告)日：2002-05-15

申请号：KR1019990034713

申请日：1999-08-20

Applicant: 한국전자통신연구원

Inventor： 이찬구 ,  김대영 ,  김정환 ,  정해원 ,  이형호

IPC: H03M7/00

CPC classification number: H03M7/20

Abstract: 본발명은선로부호의설계방법및 부호화/복호화장치에관한것으로서, 특히무직류, 최소대역폭특성을갖는선로부호를설계하는방법에관한것이다. P비트의입력데이터를무직류특성과전송대역이데이터대역의 1/2인조건을만족하는 Q비트의부호어로변환하는최소대역폭선로부호설계방법으로본 발명에서는, 부호어의 ASV (Alternative Sum Variation), DSV (Digital Sum Variation) 값을포함하는설계기준을정하는단계; 상기 ASV와 DSV가유한한값을갖는부호어의 RAS (Running Alternate Sum), RDS (Running Digital Sum) 의궤적을 RDS 를수평축으로 RAS 를수직축으로갖는평면상에도시한단위 BUDA (Binary Unit DSV and ASV)셀을구하는단계; 상기단위 BUDA 셀들을수평축으로는설계기준에서주어진 ASV 의값만큼, 수직축으로는설계기준에서주어진 DSV의값만큼직사각형모양으로쌓아설계스택을구하는단계; 상기설계스택 BUDA 셀들의교차점중에서 Q개의홉으로 2^P 개의고유한경로를가지는교차점을구하여스테이트로지정하는단계; 상기각 스테이트의 2^P 개의고유한경로들과 Q개의홉으로부터 2^P 개의 Q비트부호어들을구하는단계; 및상기 Q 개의비트로구성된부호어들중에서 RDS 와 RAS가작은것들을골라입력데이터와부호어를일대일대응시키는단계를포함하여이루어진선로부호설계방법을제공한다.

公开(公告)号：KR1020010002757A

公开(公告)日：2001-01-15

申请号：KR1019990022722

申请日：1999-06-17

Applicant: 한국전자통신연구원

Inventor： 김종호 ,  김종원 ,  이찬구 ,  정해원

IPC: H04L12/28

CPC classification number: H04W8/24 ,  H04L12/5601 ,  H04L2012/5607 ,  H04W84/12

Abstract: PURPOSE: A device for assigning a mobile terminal and a service identifier is provided to allocate MAC address of 1 byte to a mobile terminal in a base station when initializing a the mobile terminal and to recollect the allocated MAC address and allocate the address to other mobile terminal when the mobile terminal is out of service areas. Therefore, the efficiency of mobile channel is improved when transmitting ATM cell signals through the wireless channel in a wireless ATM LAN system. CONSTITUTION: A wireless receiver(30) and a wireless transmitter(40) transceive a data transceiving signal through a wireless channel. A media access control(MAC) address (MT_A) region requesting information receiver(50) receives a signal from the wireless receiver(30) to store MT_A region assigning requesting information, and outputs an identification(MT_ID) information signal of a self fixed byte, then generates a driving signal(ST_A) to drive an address generator. The address generator(110) receives the driving signal(ST_A), and outputs an address(A) of a corresponding region, a MT_A region and an identification(MT_ID) address signal of a self fixed byte to read a mapping memory. A MT_ID comparator(60) compares a MT_ID signal of a self output fixed byte of the MT_A region requesting information receiver(50) with a MT_ID signal of the mapping memory, and decides whether the same MT_ID is stored in the mapping table memory. A MT_A region storage(70) stores a MT_A value when an inputted signal(A) from the MT_ID is low, and stores a corresponding MT_A value regardless of the inputted signal(A) when an outputted signal(Sig-A) from the MT_ID is high, then outputs an address value(Sig-B) that a corresponding MT_A exists. A virtual path identifier(VPI) requester(80) transmits MT_ID information and MT_A information to an asynchronous transfer mode(ATM) switch. A VPI receiver(90) receives VPI information from the ATM switch to output a VPI value, and generate a driving signal(ST_B) for driving the memory address generator(110) to reach a high state, then makes the outputted signal of the memory address generator display an address of a corresponding MT_A. The wireless transmitter(40) stores the MT_ID information and the VPI information in the mapping memory table, and transmits the MT_ID and the MT_A information transmitted to a MT_A region transmitter, to a mobile terminal requesting a MT_A assignment.

Abstract translation: 目的：提供一种用于分配移动终端和服务标识符的设备，用于在初始化移动终端时向基站中的移动终端分配1个字节的MAC地址，并且收集所分配的MAC地址并将该地址分配给其他移动站 终端当移动终端不在服务区域时。 因此，通过无线ATM LAN系统中的无线信道发送ATM信元时，提高了移动信道的效率。 构成：无线接收器（30）和无线发射器（40）通过无线信道收发数据收发信号。 媒体访问控制（MAC）地址（MT_A）区请求信息接收器（50）从无线接收器（30）接收信号以存储MT_A区域分配请求信息，并输出自固定字节的识别（MT_ID）信息信号 ，然后产生驱动地址发生器的驱动信号（ST_A）。 地址发生器（110）接收驱动信号（ST_A），输出相应区域的地址（A），MT_A区域和自固定字节的识别（MT_ID）地址信号，以读取映射存储器。 MT_ID比较器（60）将MT_A区域请求信息接收器（50）的自输出固定字节的MT_ID信号与映射存储器的MT_ID信号进行比较，并且判定相同的MT_ID是否存储在映射表存储器中。 当来自MT_ID的输入信号（A）为低时，MT_A区域存储器（70）存储MT_A值，并且当来自MT_ID的输出信号（Sig-A）时，不管输入信号（A）如何，存储对应的MT_A值 然后输出相应的MT_A存在的地址值（Sig-B）。 虚拟路径标识符（VPI）请求者（80）将MT_ID信息和MT_A信息发送到异步传输模式（ATM）交换机。 VPI接收器（90）从ATM交换机接收VPI信息以输出VPI值，并产生用于驱动存储器地址产生器（110）达到高状态的驱动信号（ST_B），然后使存储器的输出信号 地址生成器显示相应MT_A的地址。 无线发射机（40）将MT_ID信息和VPI信息存储在映射存储器表中，并将发送到MT_A区域发射机的MT_ID和MT_A信息发送到请求MT_A分配的移动终端。

公开(公告)号：KR1020000037697A

公开(公告)日：2000-07-05

申请号：KR1019980052346

申请日：1998-12-01

Applicant: 한국전자통신연구원

Inventor： 김종호 ,  김종원 ,  정해원

IPC: H04L12/28

CPC classification number: H04L12/4608 ,  H04L2012/5652 ,  H04L2012/5681

Abstract: PURPOSE: An apparatus for processing medium access control in a wireless ATM LAN system is provided to embody a medium access control method based on a data frame structure used in a CDMA/TDD method based medium access control in the wireless ATM LAN system. CONSTITUTION: Transmitting and receiving timing generation parts(150,220) generate transmitting and receiving timings. Buffer parts(110,140), a data storage part(120) and a CDMA/TDD frame transmitting part(130) process an ATM cell signal transmitted from an external ATM signaling part by the timing generated in the transmitting timing generation part(150), and transmit it to a MPDU(MAC Protocol Data Unit). Buffer parts(180,210), a CDMA/TDD frame receiving part(200) and a data storage part(190) extract the ATM cell signal from the MPDU signal and transmit it to the external ATM signaling part. A channel allocating/scheduling processor(160) outputs a control signal for channel allocating/scheduling to the CDMA/TDD frame transmitting/receiving parts(130,200) and the data storage parts(120,190). A control frame processor(170) transmits and receives a control frame according to the control signal of the channel allocating/scheduling processor(160).

Abstract translation: 目的：提供一种用于在无线ATM LAN系统中处理媒体访问控制的装置，以实现基于在无线ATM LAN系统中基于CDMA / TDD方法的媒体访问控制中使用的数据帧结构的媒体访问控制方法。 构成：发送和接收定时生成部分（150,220）生成发送和接收定时。 缓冲器部分（110,140），数据存储部分（120）和CDMA / TDD帧发送部分（130）处理从发送定时产生部分（150）产生的定时从外部ATM信令部分发送的ATM信元信号， 并将其发送到MPDU（MAC协议数据单元）。 缓冲部分（180,210），CDMA / TDD帧接收部分（200）和数据存储部分（190）从MPDU信号中提取ATM信元，并将其发送到外部ATM信令部分。 信道分配/调度处理器（160）向CDMA / TDD帧发送/接收部分（130,200）和数据存储部分（120,190）输出用于信道分配/调度的控制信号。 控制帧处理器（170）根据信道分配/调度处理器（160）的控制信号发送和接收控制帧。

公开(公告)号：KR1020000024709A

公开(公告)日：2000-05-06

申请号：KR1019980041361

申请日：1998-10-01

Applicant: 한국전자통신연구원

Inventor： 이찬구 ,  정해원 ,  김종호 ,  임명섭

IPC: H04J11/00

CPC classification number: H04L27/265 ,  H04L27/2628

Abstract: PURPOSE: A wireless transmitter/receiver apparatus is provided to improve a transfer efficiency in a system using a wire or wireless transfer channel by reducing a transfer band width by half a need band width. CONSTITUTION: In a wireless transmitter/receiver apparatus, a serial/parallel converting part(310) converts an externally input serial signal into a parallel signal. An inverse fourier transform part(320) makes a plurality of parallel signals sent from the serial/parallel converting part be an inverse fourier transform, divides the converted signals into a data string of an actual number and an imaginary number, and reduce the channel number of output signals. A transmission processing part(330) converts an output signal of the inverse fourier transform part into an analog signal, and modulates the converted signal to send the modulated signal. A receive processing part(340) demodulates a signal sent from the transmission processing part, and converts the demodulated signal into a digital signal. A radio frequency signal generating part(350) receives an output signal from the receive processing part to generate a radio frequency signal. A signal restoration part(360) receives an output signal from the radio frequency signal generating part to restore the received signal to an original serial signal.

Abstract translation: 目的：提供一种无线发射机/接收机设备，通过将传输带宽减少一半需要带宽来提高使用有线或无线传输信道的系统的传输效率。 构成：在无线发射机/接收机装置中，串行/并行转换部分（310）将外部输入的串行信号转换为并行信号。 逆傅立叶变换部（320）使从串/并转换部发送的多个并行信号成为逆傅立叶变换，将转换后的信号分割为实数和虚数的数据串，并减少通道数 的输出信号。 发送处理部（330）将逆傅立叶变换部的输出信号变换为模拟信号，并对转换后的信号进行调制，发送调制信号。 接收处理部分（340）解调从发送处理部分发送的信号，并将解调信号转换为数字信号。 射频信号生成部（350）从接收处理部接收输出信号，生成射频信号。 信号恢复部（360）从射频信号生成部接收输出信号，将接收到的信号恢复为原始的串行信号。

公开(公告)号：KR100249502B1

公开(公告)日：2000-03-15

申请号：KR1019970073018

申请日：1997-12-24

Applicant: 한국전자통신연구원

Inventor： 정동범 ,  윤종호 ,  정해원

IPC: H04L12/28

Abstract: 1. 청구범위에 기재된 발명이 속하는 기술분야
본 발명은 LAN 카드의 TCP/IP 가속 장치 및 방법에 관한 것임.
2. 발명이 해결하고자하는 기술적 요지
본 발명은 이더넷 LAN 환경에서 사용되는 LAN의 내부에 이더 타입에 따른 상위 계층 패킷의 분류기능과 TCP/IP의 일부기능을 내장하여, 고속 환경하에서 통신에 응용될 수 있는 TCP/IP 가속 장치 및 방법을 제공하는데 그 목적이 있다.
3. 발명의 해결 방법의 요지
본 발명은 입력된 데이터의 이더 프레임 형태를 구분하여 제어신호 및 인터넷 프로토콜 처리를 위한 정보를 출력하는 전방 처리수단; 전송 제어 프로토콜 처리를 위한 정보 및 동작 완료를 위한 신호를 출력하는 인터넷 프로토콜 처리수단; 및 동작 완료를 위한 신호 및 상태 레지스터 비트값을 출력하는 전송 제어 프로토콜 처리수단을 포함한다.
4. 발명의 중요한 용도
본 발명은 고속의 LAN 환경에서 주요 병목이 되고 있는 TCP/IP 동작을 고속화하는데 이용됨.

公开(公告)号：KR1019990047345A

公开(公告)日：1999-07-05

申请号：KR1019970065706

申请日：1997-12-03

Applicant: 한국전자통신연구원

Inventor： 최강일 ,  정해원

IPC: H04L12/28

Abstract: 본 발명은 ATM 액세스 노드 시스템에서 실시간 OAM 처리장치에 관한 것으로서, 서비스 노드와 광선로로 연결되어 ATM 처리를 수행하는 서비스 노드 측 라인카드부, 서비스 노드 측 라인카드 모듈 단위를 제어하는 서비스 노드 측 제어 프로세서부, ONU와 광 선로로 연결되어 ATM 처리를 수행하는 ONU 측 라인카드부, ONU 측 라인카드 모듈 단위를 제어하는 ONU 측 제어 프로세서부, 서비스 노드 측 라인카드부와 ONU 측 라인카드부의 ATM 셀을 교환해주는 스위치부, ATM 엑세스 노드 시스템을 관리하는 망 관리 시스템의 에이전트 역할을 하는 관리 프로세서부, 서비스 노드 측 제어 프로세서와 ONU 측 제어 프로세서 및 관리 프로세서 간 통신 채널부를 구성하여 OAM 정보를 교환하게 함으로써 ATM 엑세스 노드 시스템을 확장하더라도 실시간으로 OAM 처리를 제공해주며, 또 한 라인 카드를 모듈 단위로 제어함으로써 시스템 확장에 따른 프로세서의 비용을 단축시키는 효과가 있다.

公开(公告)号：KR1019940005246B1

公开(公告)日：1994-06-15

申请号：KR1019910007062

申请日：1991-05-01

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 이종형 ,  이승표 ,  정해원

IPC: H04M11/06

Abstract: An integrated service digital network (ISDN) telephone system and control method therefor includes a nonISDN terminal interface circuit connected to a B channel controller and a system controller, for connecting a data call, thereby connecting a nonISDN terminal without additional equipment.

Abstract translation: 综合业务数字网（ISDN）电话系统及其控制方法包括连接到B信道控制器和系统控制器的非ISDN终端接口电路，用于连接数据呼叫，从而连接非ISDN终端而无需附加设备。