Abstract:
본 개시(disclosure)는 LTE(Long Term Evolution)와 같은 4G(4th generation) 통신 시스템 이후 보다 높은 데이터 전송률을 지원하기 위한 5G(5th generation) 또는 pre-5G 통신 시스템에 관련된 것이다. 다양한 실시 예들에 따른 무선 환경(wireless environment)에서 송신 장치(transmission device)는, 송수신기(transceiver)와, 상기 송수신기와 기능적으로 결합된 프로세서(processor)를 포함하고, 상기 프로세서는, 송신 데이터에 관련된 코드워드를 생성하고, 격자 생성 행렬의 행들 각각에 대응하는 벡터들의 선형 결합을 이용하여 결정된 복수의 송신 심볼 벡터들을 이용하여 상기 코드워드로부터 심볼들을 생성하고, 상기 심볼들에 기반하여 생성된 신호를 상기 송수신기를 통해 송신하도록 설정될 수 있다.
Abstract:
멀티-중계기 기반의 다중 입출력 통신 시스템이 개시된다. 멀티-중계기 기반의 다중 입출력 통신 시스템에서, 복수의 중계기들 각각은 사용자 그룹을 가지며, 기지국의 전송 신호를 기초로 사용자 그룹을 위한 중계 신호를 생성한다. 이 때, 기지국은 전체 성능(throughput)이 극대화될 수 있도록 복수의 중계기들 중 적어도 하나의 서빙 중계기를 선택할 수 있다. MIMO, 중계기, 스케쥴, 선택, 다중 입출력, 빔포밍, SDMA, 채널, capacity
Abstract:
PURPOSE: A communication method of partial sharing of data in layer cell environment and a device thereof are provided to transmit a message generated by network coding in a target transmitter based on a target message and a neighbor transmitter message. CONSTITUTION: A target receiver estimates a channel(431). The target receiver determines a PMI(Precoding Matrix Indicator) and a neighbor PMI(432). A target transmitter generates a message by network coding(424). The target transmitter performs a precoding based on the PMI(425). The target receiver separates signals for each space(433). The target receiver detects a target message(434).
Abstract:
PURPOSE: A transmission power allocation method of nodes is provided to maximize sum rate of a system when nodes constituting a two-way relay system and transmission power resources is limited. CONSTITUTION: A first channel gain about a first channel formed between a first node and a relay is compared with a second channel gain about a second channel formed between a second node and a relay(S220). When the first channel gain exceeds the second channel gain, the first transmission power of the first node, and the second transmission power of the second node, and the third transmission power of the relay are determined so that a first data transmission rate exceeds a second data transmission rate, the first data transmission rate and a third data transmission rate are same, and the sum rate of the two-way relay system is maximized(S230).
Abstract:
PURPOSE: A device for supporting a direct communication service between devices, and a method thereof are provided to search surrounding devices in a system which supports device to device. CONSTITUTION: A control unit(710) transmits first information included in device information by using one or more first tones included in a first area of a search section. The control unit transposes a subcarrier index into a symbol index of a first tone. The control unit transmits the first information through one or more second tones transmitting the first information in a second area. The control unit transmits second information included in device information through a resource area corresponding to the first tone in a third area. [Reference numerals] (700) Duplexer; (710) Control unit; (712) Device information checking unit; (722) Message generating unit; (724) Transmission modem; (732) Reception modem; (734) Message processing unit
Abstract:
PURPOSE: An interference arrangement method and apparatus thereof are provided to effectively control interference by transmitting information related to a reception beam-forming vector. CONSTITUTION: A macro base station calculates an inter-cell channeling matrix which channels effective interface channels to pico terminals which consider of a reception beam-forming vectors(420). The macro base station calculates the transmission beam-forming vector of each macro terminal in order to eliminate interference between the macro terminals by using each reception beam-forming method and the inter cell channeling matrix(430).
Abstract:
다중 셀 다중 안테나 시스템에서 레이트 스플리팅 기법을 사용하기 위한 빔포밍 방법 및 장치가 개시된다. 다중 셀 다중 안테나(MIMO) 시스템에서 송/수신 빔포밍 벡터들을 적절히 결정함으로써 복수개의 단일 입력 단일 출력(SISO) 간섭 채널의 페어(pair)로 분할이 가능하다. 그리고 분할된 복수개의 페어(pair) 각각에 레이트 스플리팅 기법을 사용할 수 있다.
Abstract:
PURPOSE: A linear precoding device at an interference channel is provided to maximize a transmission rate in a neighboring environment by feeding back channel state information with a serving base station to the servicing base station. CONSTITUTION: A collecting unit(410) collects information about channels between a plurality of transceiving pairs and channel information which is fed back by a target terminal among terminal in a user group corresponding to a serving BS(Base Station) from at least one neighboring base station among a plurality of neighboring BS. An interference recognition unit(430) recognized interference channel information to the target terminal from a plurality of neighboring base stations. A precoding unit(450) generates a precoding matrix through the interference channel information and the channel information which is fed back by the target terminal.