Abstract:
릴레이 통신 제공방법 및 이를 적용한 컴퓨터로 읽을 수 있는 기록매체가 제공된다. 본 릴레이 통신 제공방법에 따르면, 릴레이 노드가 수신된 신호를 빔형성 처리하여 브로드캐스트하고, 유저노드가 빔형성 처리된 신호를 수신하여 자체 간섭 성분을 제거 처리할 수 있게 되어, 무선 통신 시스템의 캐패시티를 증가시킬 수 있으며, 최적 파워 할당도 가능해진다.
Abstract:
송신기가 CSI(Channel State Information : 채널 상태 정보)를 알고 있는 경우, 다중 안테나는 매우 큰 용량 이득을 제공할 수 있다. MIMO(Mmultiple-Input Multiple-Output) 무선 통신 시스템에서, '송신기 측의 CSI'인 'CSIT'는 전송 속도를 증가시키고 신뢰성을 향상시켜 시스템 성능을 크게 향상시킬 수 있다. 프리코딩은 전송 전에 신호를 처리하여 CSIT을 향상시키는 기술이다. 위 실시예에서는 제안된 프리코딩 기법인 HMP(Hybrid Multiple-Input Multiple-Output Precoding)는 선형 코딩과 비선형 코딩의 결합형이다. HMP 기법은 전송시에 적어도 네 개의 송신 안테나를 사용한다. HMP 기법에서, 양호한 채널에서는 비선형 프리코딩을 사용하고, 불량한 채널에서는 선형 프리코딩을 사용한다. 비선형 프리코딩으로는 THP(Tomlinson-Harashima Precoding)가 적용된다.
Abstract:
Provided is a relay network communication method. According to the relay network communication method, provided is the relay network communication method estimating a channel based on a pilot signal and transmitting the pilot signal and a data symbol together. Therefore, the method can optimize the capacity of the relay network and speed up the communication speed.
Abstract:
PURPOSE: A receiver and a decoding method applied to the same are provided to group multiple symbols included in reception signals received from multiple transmitters and to perform partial interface cancellation (PIC) group decoding of the reception signals. CONSTITUTION: A grouping unit (220) groups multiple symbols included in reception signals received from multiple transmitters. A decoding unit (230) performs PIC group decoding of the reception signals. The grouping unit groups the reception signals into four blocks by making groups of two with 8 symbols about the reception signals. The grouping unit groups column vectors into four blocks by making groups of two with the column vectors which do not cross each other. [Reference numerals] (100) Transmitter; (220) Grouping unit; (230) Decoding unit
Abstract:
PURPOSE: A partial interference cancellation group decoding method and a receiver using the method are provided to show almost same function as the previous method by decoding a received signal and to reduce the complexity of a decipher. CONSTITUTION: A receiving part receives a signal which is linear decentralized and space time block coded. A decoding part decodes the received signal by decoding a partial interference cancellation group. The decoding part divides a symbol included in the space time block code into a plurality of groups, processes the linear partial interference removal, and individually decodes each group. The decoding part groups the space time block code in an Alamouti method, calculates a projection matrix by using a grouped channel matrix, and individually decodes each group by using the projection matrix. [Reference numerals] (AA) Start; (BB) End; (S510) Receiving a signal which is linear decentralized and space time block coded.; (S520) Decoding the received signal by decoding a partial interference cancellation group;