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    • 3. 发明公开
    • MIMO 시스템, MIMO 송신기의 아날로그 신호 변환 방법 및 MIMO 수신기의 디지털 신호 변환 방법
    • MIMO系统,MIMO송신기의아날로그신호변환법법및및MIMO수신기의디지털신호변환방MIMO
    • KR1020130119788A
    • 2013-11-01
    • KR1020120042862
    • 2012-04-24
    • 한국과학기술원
    • 이용훈김철순신증호정의림
    • H04B7/04H04J11/00
    • H04B7/0413H04B7/0667H04J11/00
    • The present invention relates to an analog signal converting method using digital to analog converters, whose number is less than the number of transmission antennas, in an MIMO transmitter having a plurality of transmission antennas, to a digital signal converting method using analog to digital converters less than the number of receipt antennas in an MIMO receiver, and to a system which the same methods are applied to. The MIMO transmitter and the MIMO receiver give a signal delay to each chain, switch signals and forward the switched signals to one data converter for using one data converter in each chain group. [Reference numerals] (110) Sample symbol generating unit;(140) Up conversion unit;(210) Down conversion unit;(230) Data restoring unit;(AA) Antenna chain;(BB) DAC (one);(CC) ADC (one)
    • 本发明涉及在具有多个发送天线的MIMO发送器中使用数量小于发送天线数量的数字到模拟转换器的模拟信号转换方法,涉及一种使用模数转换器的数字信号转换方法 比MIMO接收器中的接收天线的数量多,并且涉及应用相同方法的系统。 MIMO发射机和MIMO接收机为每个链提供信号延迟,切换信号并将切换后的信号转发到一个数据转换器,以便在每个链组中使用一个数据转换器。 (110)采样符号生成单元;(140)上变换单元;(210)下变换单元;(230)数据恢复单元;(AA)天线链;(BB)DAC(1);(CC) ADC(一)
    • 7. 发明公开
    • 지상파 DTV 방송 및 부가데이터를 위한 다중 안테나 전송 장치 및 방법
    • 空值
    • KR1020110047101A
    • 2011-05-06
    • KR1020100013289
    • 2010-02-12
    • 한국전자통신연구원
    • 김정창서재현김흥묵임형수박성익
    • H04N7/08H04N7/015
    • H04B7/0667H04L1/004H04L2001/0093
    • PURPOSE: A multi-antenna transmission apparatus for transmitting a terrestrial DTV broadcasting signal and additional data is provided to transmit a terrestrial DTV broadcasting signal and additional data by using multi-antennas. CONSTITUTION: A temporal and spatial mapping unit(202) maps main service symbols generated by a main service symbol generating unit(201) to the plurality of transmission antennas. An additional data symbol generating unit(203) generates additional data symbols for an additional data service. The additional data service may be a service to provided in addition to a DTV broadcast service. A transmission of the additional data provides additional broadcast service in addition to the existing DTV broadcast, and provides data service such as an education service, a stock service, a public announcement service, and the like, in addition to the existing DTV service. In addition, additional information, such as program information, associated with the main service is transmitted. A range of the additional data service may not be limited thereto, and a variety of information may be included. A temporal and spatial encoder(204) performs temporal and spatial encoding of the additional data symbols generated by the additional data symbol generating unit, and generates symbols to be transmitted to the plurality of transmission antennas. The temporal and spatial encoder receives, as inputs, K additional data symbols from the additional data symbol generating unit 203, K being an integer number, and may generate T*M temporal and spatial encoded symbols to be transmitted to the M transmission antennas during a T time duration. A processor(210) generates symbols to be transmitted via the plurality of transmission antennas based on the main service symbols and the additional data symbols.
    • 目的:提供用于发送地面DTV广播信号和附加数据的多天线发送装置,以通过使用多天线来发射地面DTV广播信号和附加数据。 构成:时空映射部(202)将由主服务符号生成部(201)生成的主服务符号映射到多个发送天线。 附加数据符号生成单元(203)生成用于附加数据服务的附加数据符号。 附加数据服务可以是除DTV广播服务之外提供的服务。 除了现有的数字电视广播之外,附加数据的传输还提供附加的广播服务,并且除了现有的数字电视服务之外,还提供诸如教育服务,股票服务,公告服务等的数据服务。 此外,发送与主服务相关联的诸如节目信息的附加信息。 附加数据服务的范围可以不限于此,并且可以包括各种信息。 时间和空间编码器(204)执行由附加数据符号生成单元生成的附加数据符号的时间和空间编码,并且生成要发送到多个发送天线的符号。 时间和空间编码器接收来自附加数据符号生成单元203的K个附加数据符号作为输入,K是整数,并且可以生成T * M个时间和空间编码符号,以在 T持续时间。 处理器(210)基于主服务符号和附加数据符号生成要经由多个发送天线发送的符号。
    • 9. 发明公开
    • 다중안테나를 갖는 무선 통신 시스템에서 레퍼런스 신호를 하향 전송하는 방법
    • 在具有多个天线的无线通信中DL发送参考信号的方法
    • KR1020100048871A
    • 2010-05-11
    • KR1020090085402
    • 2009-09-10
    • 엘지전자 주식회사
    • 노유진김기준강병우이대원김봉회노동욱
    • H04B7/04
    • H04L5/0048H04B1/707H04B7/0667H04L5/026H04L25/0224H04L27/2611
    • PURPOSE: A method for transmitting downlink reference signals in a multi-antenna wireless communication system is provided to efficiently transmit downlink reference signals when the number of antennas increase in a multi-antenna wireless communication system. CONSTITUTION: UE(User Equipment) generally includes a control system(402), a baseband processor(404), transmit circuitry(406), receive circuitry(408), multiple antennas(410), and a user interface(412). The receive circuitry receives a radio signal carrying information from one or more base stations through multiple antennas. Preferably, a low noise amplifier and a filter amplify the received signal and cancel broadband interference from the amplified signal. A down-conversion and analog-to-digital conversion circuitry down-converts the filtered signal to an IF or baseband signal and digitizes the IF or baseband signal to one or more digital streams. The baseband processor processes the digital signal and extracts information or data bits from the processed signal. The processing includes demodulation, decoding, error correction, etc. The baseband processor is configured usually with one or more DSPs(Digital Signal Processors) and ASICs(Application Specific Integrated Circuits). For transmission, the baseband processor receives digital data carrying voice, data, or control information from the user interface under the control of the control system and encodes the digital data. The transmit circuitry modulates the encoded data to a carrier having a desired transmission frequency or frequencies. A power amplifier amplifies the modulated carrier signal to a power level appropriate for transmission. The amplified signal is transmitted through the multiple antennas.
    • 目的:提供一种在多天线无线通信系统中发送下行链路参考信号的方法,用于在多天线无线通信系统中当天线数量增加时有效地发射下行链路参考信号。 构成:UE(用户设备)通常包括控制系统(402),基带处理器(404),发射电路(406),接收电路(408),多个天线(410)和用户接口(412)。 接收电路通过多个天线从一个或多个基站接收携带信息的无线电信号。 优选地,低噪声放大器和滤波器放大接收的信号并且消除来自放大信号的宽带干扰。 下转换和模数转换电路将经滤波的信号下变频为IF或基带信号,并将IF或基带信号数字化为一个或多个数字流。 基带处理器处理数字信号,并从处理的信号中提取信息或数据位。 该处理包括解调,解码,纠错等。基带处理器通常配置有一个或多个DSP(数字信号处理器)和ASIC(专用集成电路)。 为了传输,基带处理器在控制系统的控制下从用户接口接收携带语音,数据或控制信息的数字数据,并对数字数据进行编码。 发射电路将编码的数据调制到具有期望的传输频率或载波的载波。 功率放大器将经调制的载波信号放大到适于传输的功率电平。 放大的信号通过多个天线发射。