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公开(公告)号：KR1020090062617A
公开(公告)日：2009-06-17
申请号：KR1020070129972
申请日：2007-12-13
Applicant: 한국전자통신연구원
CPC classification number: H04B7/0417 , H04L1/0631 , H04L1/02 , H04B7/0617 , H04B7/0619 , H04L1/0048
Abstract: A multi-antenna receiving device and a receiving method thereof are provided to obtain the diversity gain and multiplexing gain at the same time by removing the interference between channels and increasing the channel capacity. A plurality of different data streams are received through a plurality of antennas of a receiving device(S510). A data stream detection unit of the receiving device detects each data stream(S520). A beam forming vector calculation unit of the receiving device produces a beam forming vector and then feeds back the calculated beam forming vector to a transmission device(S530). An interference removal unit of the receiving device removes the interference between channels for each detected data stream(S540).
Abstract translation: 提供多天线接收装置及其接收方法，通过消除信道之间的干扰并增加信道容量，同时获得分集增益和多路复用增益。 通过接收设备的多个天线接收多个不同的数据流（S510）。 接收装置的数据流检测单元检测每个数据流（S520）。 接收装置的波束形成向量计算单元产生波束形成向量，然后将计算的波束形成向量反馈到传输装置（S530）。 接收装置的干扰去除单元去除每个检测数据流的信道之间的干扰（S540）。
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公开(公告)号：KR1020090055294A
公开(公告)日：2009-06-02
申请号：KR1020070122143
申请日：2007-11-28
Applicant: 한국전자통신연구원
IPC: H04B7/06
CPC classification number: H04B7/0691 , H04L47/50
Abstract: An apparatus and a method for transmitting data by using a multi-antenna are provided to support the QoS(Quality of Service) by determining an antenna group having a proper wireless channel according to data characteristics and transmitting data through the determined transmission antenna. A data transmitter(410) generates a transmission group data list including storage information of transmission set data, and transmits the correspondent transmission group data through a transmission FIFO selected by a transmission FIFO selector. Based on the priority depending on the characteristics of each group data and a reassign threshold value, the transmission FIFO selector selects a transmission FIFO correspondent to an optimal antenna group. A timing controller(430) controls the transmission timing of each group data. The timing controller controls the transmission timing of each group data.
Abstract translation: 提供一种通过使用多天线发送数据的装置和方法，以通过根据数据特性确定具有适当无线信道的天线组来支持QoS（服务质量），并通过所确定的发送天线发送数据。 数据发送器（410）生成包含发送设定数据的存储信息的发送组数据列表，并且通过由发送FIFO选择器选择的发送FIFO发送对应的发送组数据。 根据取决于每个组数据的特性和重新分配阈值的优先级，发送FIFO选择器选择对应于最佳天线组的发送FIFO。 定时控制器（430）控制每个组数据的发送定时。 定时控制器控制每组数据的传输定时。
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公开(公告)号：KR100823569B1
公开(公告)日：2008-04-21
申请号：KR1020060116951
申请日：2006-11-24
Applicant: 한국전자통신연구원
Abstract: 본 발명은 부분적으로 대역이 중첩되는 단일 반송파 간섭 신호의 제거 방법 및 장치에 관한 것이다.
이를 위하여 본 발명은 입력 신호를 기저 대역으로 하향 천이시키는 전 처리 모듈, 입력 신호를 인터폴레이션 비율로 나누어, 간섭 신호를 제거하는 간섭 신호 제거 모듈, 간섭 신호 제거 모듈의 출력을 통과 대역 신호로 변환하는 후 처리 모듈 및 잔여 간섭 신호의 데시메이션을 실행한 뒤 간섭 신호 제거 모듈로 피드백시키는 오류 피드백 프로세서 모듈을 포함하는 간섭 신호 제거 장치를 제공한다. 또한, 간섭 신호가 포함된 입력 신호를 기저 대역으로 하향 천이시켜서 인터폴레이션 및 필터링을 수행한 뒤, 원래 신호의 주파수로 천이시켜 발생된 잔여 간섭 신호를 데시메이션하는 간섭 신호 제거 방법을 제공한다.
본 발명에 의하면, 인터폴레이션 필터 및 데시메이션 필터를 사용함으로써, 간섭 신호 제거 장치의 구현의 복잡도가 감소하며, 간섭 신호 제거를 느린 속도로 처리할 수 있어, 계산의 복잡도가 매우 감소하는 효과를 기대할 수 있다.
단일 반송파 간섭 신호, 간섭 신호 제거, 인터폴레이션, Interpolation, 데시메이션, Decimation, XC, 필터형-X 알고리즘-
64.发明公开
公开(公告)号：KR1020080030282A
公开(公告)日：2008-04-04
申请号：KR1020060096167
申请日：2006-09-29
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2647 , H04B7/0413
Abstract: A method and an apparatus for receiving a signal in an OFDM(Orthogonal Frequency Division Multiplexing) communication system using multiple transmitting/receiving antennas are provided to improve a receiving performance and reduce complexity by demodulating remaining data streams after removing regenerated symbols. An apparatus for receiving a signal in an OFDM communication system using multiple transmitting/receiving antennas includes a multi-dimensional receiver(403), a symbol regeneration unit(406), an interference removing unit(407), a demodulation unit, and a parallel/series conversion unit(412). The multi-dimensional receiver demodulates a part of predetermined data streams according to a multi-dimensional receiving process. The symbol regeneration unit regenerates symbols corresponding to the demodulated data streams. The interference removing unit removes the regenerated symbols from the remaining data streams. The demodulation unit demodulates the remaining data streams from which the regenerated symbols are removed. The parallel/serial conversion unit converts the demodulated data according to the multi-dimensional receiving process and the demodulated remaining data streams into serial data and data streams to output the converted data and data streams.
Abstract translation: 提供一种用于在使用多个发送/接收天线的OFDM（正交频分复用）通信系统中接收信号的方法和装置，以通过在去除再生符号之后解调剩余数据流来提高接收性能并降低复杂度。 一种用于在使用多个发送/接收天线的OFDM通信系统中接收信号的装置包括多维接收机（403），符号再生单元（406），干扰去除单元（407），解调单元和并行 /串联转换单元（412）。 多维接收机根据多维接收处理解调部分预定数据流。 符号再现单元重新生成与解调数据流对应的符号。 干扰去除单元从剩余的数据流中去除再生符号。 解调单元对剩余的数据流进行解调，再生符号被从其去除。 并行/串行转换单元将解调的数据根据多维接收处理和解调的剩余数据流转换为串行数据和数据流，以输出转换的数据和数据流。
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公开(公告)号：KR1020070061747A
公开(公告)日：2007-06-14
申请号：KR1020060116965
申请日：2006-11-24
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2628
Abstract: An apparatus for modulating a multi antenna for downlink OFDMA wireless communication and a method for implementing the same are provided to implement a base station modulation apparatus of an OFDMA system which transmits downlink data by using a multi antenna and a multi subcarrier at the same time. An apparatus for modulating a multi antenna for downlink OFDMA wireless communication includes a DTP(Downlink Traffic Packet) processing unit(510), an index mapper(520), a scrambler(530), a virtual carrier insertion unit(540), an IFFT(Inverse Fast Fourier Transform) unit(550), and a CP(Cyclic Prefix) insertion unit(570). The DTP processing unit(510) generates a DTP symbol value by mapping downlink data to an antenna of a plurality of antennas to be transmitted. The index mapper(520) maps the DTP symbol value received from the DTP processor(510) to the number of bits for transmission. The scrambler(530) performs a scrambling operation which randomizes interference between cells of the downlink data transmitted through the index mapper(520). The virtual carrier insertion unit(540) fills virtual data in an empty space of the scrambled downlink data. The IFFT unit(550) performs an inverse fast fourier transform operation which transforms the data transmitted from the virtual carrier insertion unit(540) to a signal of a time axis. The CP insertion unit(570) adds a CP to the inverse fast Fourier transformed downlink data.
Abstract translation: 提供一种用于下行OFDMA无线通信的多天线调制装置及其实现方法，以实现OFDMA系统的基站调制装置，其通过同时使用多天线和多子载波来发送下行链路数据。 用于下行OFDMA无线通信的多天线调制装置包括DTP（下行链路业务分组）处理单元（510），索引映射器（520），加扰器（530），虚拟载波插入单元（540），IFFT （快速傅里叶逆变换）单元（550）和CP（循环前缀）插入单元（570）。 DTP处理单元（510）通过将下行链路数据映射到要发送的多个天线的天线来生成DTP符号值。 索引映射器（520）将从DTP处理器（510）接收的DTP符号值映射到用于传输的位数。 加扰器（530）执行随机化通过索引映射器（520）发送的下行链路数据的小区之间的干扰的加扰操作。 虚拟载波插入单元（540）在加扰的下行链路数据的空白空间填充虚拟数据。 IFFT单元（550）执行将从虚拟载波插入单元（540）发送的数据变换为时间轴的信号的逆快速傅里叶变换操作。 CP插入单元（570）将CP添加到快速傅里叶逆变换的下行链路数据。
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Patent Agency Ranking
公开(公告)号：KR1020070061745A
公开(公告)日：2007-06-14
申请号：KR1020060116951
申请日：2006-11-24
Applicant: 한국전자통신연구원
CPC classification number: H04B1/1036 , H04L25/03006 , H04L27/2691
Abstract: An apparatus for canceling crosstalk due to the partial overlap of a frequency band and its method are provided to reduce the complexity of calculation required for canceling crosstalk by removing the necessity of using a high sampling frequency. A pre-processor module(210) downwardly transfers an input signal including crosstalk to a baseband. A crosstalk canceling module(220) divides the downwardly-transferred input signal by an interpolation rate, and cancels the crosstalk of the input signal. A post-processing module(230) converts an output of the crosstalk canceling module(220) into a pass band signal. An error feedback processor module(240) receives a remnant crosstalk from the post-processing module(230), executes decimation, and feeds it back to the crosstalk canceling module(220).
Abstract translation: 提供了用于消除由于频带的部分重叠引起的串扰的装置及其方法，以通过消除使用高采样频率的必要性来减少消除串扰所需的计算的复杂度。 预处理器模块（210）将包括串扰的输入信号向下传送到基带。 串扰消除模块（220）将向下传输的输入信号除以内插速率，并消除输入信号的串扰。 后处理模块（230）将串扰消除模块（220）的输出转换成通带信号。 错误反馈处理器模块（240）从后处理模块（230）接收剩余的串扰，执行抽取，并将其馈送回到串扰消除模块（220）。
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公开(公告)号：KR102246938B1
公开(公告)日：2021-04-30
申请号：KR1020200093903
申请日：2020-07-28
Applicant: 한국전자통신연구원
Abstract: 스테이션그룹화를통한전송스케줄링방법이개시된다. 그방법은, 복수의스테이션에대해상기복수의스테이션의위치를기준으로복수의섹터로물리적그룹화를수행하는단계, 상기물리적그룹화를통해그룹화된각각의물리적그룹을상기각각의물리적그룹에포함된복수의스테이션이가진공통적인특성을기준으로논리적그룹화를수행하는단계, 상기논리적그룹화를통해그룹화된각각의논리적그룹이서로다른시간구간에상기액세스포인트에액세스할수 있도록스케줄링된액세스스케줄링정보를상기복수의스테이션에전송하는단계; 및상기액세스스케줄링정보에따라상기복수의스테이션의액세스를제어하는단계를포함한다.
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公开(公告)号：KR102236286B1
公开(公告)日：2021-04-05
申请号：KR1020140035950
申请日：2014-03-27
Applicant: 한국전자통신연구원
IPC: H04W72/08 , H04W74/04 , H04B7/0413 , H04B7/06 , H04B1/04 , H04B7/0452 , H04B7/0417 , H04W88/08
Abstract: SU-MIMO 전송에서의기회적간섭정렬방법및 장치가개시된다. 기회적간접정렬방법은간섭공간(interference space)을선택하는단계, 상기선택된간섭공간에대한정보를브로드캐스트(broadcast)하는단계, 사용자단말로부터간섭누출(leakage of interference; LIF) 정보를포함하는 RTS(request to send) 메시지를수신하는경우, 상기간섭누출정보에기초하여각각의서브채널에대해전송기회를부여할사용자단말을선택하는단계, 및상기선택된사용자단말로데이터를전송하는단계를포함할수 있다.
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公开(公告)号：KR102230652B1
公开(公告)日：2021-03-23
申请号：KR1020140118882
申请日：2014-09-05
Applicant: 한국전자통신연구원
Abstract: 액세스포인트의동작방법및 릴레이의동작방법이개시된다. 일실시예에따른액세스포인트는오버래핑채널의사용을금지하는지여부를지시하는제1 정보, 릴레이에의하여논-오버래핑채널을이용한동작이지원되는지여부를지시하는제2 정보, 및액세스포인트와동일채널의사용이요청되는지여부를지시하는제3 정보중 적어도하나에기초하여, 릴레이와연관할지여부를결정할수 있다.
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公开(公告)号：KR1020210030328A
公开(公告)日：2021-03-17
申请号：KR1020210031199
申请日：2021-03-10
Applicant: 한국전자통신연구원
Abstract: 다중대역폭을지원하는무선랜시스템의통신방법및 장치가개시된다. 일실시예에따른광역무선랜시스템의통신방법은, 다중대역폭(multi bandwidth)을지원하는네트워크의통신장치가, 기설정된대역폭들중 신호대 잡음비가가장낮은제1 대역폭및 상기제1 대역폭의 2배크기인제2 대역폭중 어느하나의대역폭에기초하여기본프레임을생성하는단계와, 상기기본프레임에기초하여듀플리케이션모드(duplication mode) 프레임을구성하는단계및 복수의대역(band)을통해상기듀플리케이션모드프레임을전송하는단계를포함한다.
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