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    • 36. 发明公开
    • 다중 사용자 다중 입출력 무선통신 시스템에서 간섭 제거를위한 신호 처리 장치 및 방법
    • 用于消除多用户多输入多输出无线通信系统干扰的信号处理装置和方法
    • KR1020090023879A
    • 2009-03-06
    • KR1020070088971
    • 2007-09-03
    • 삼성전자주식회사보드 오브 리전츠, 더 유니버시티 오브 텍사스 시스템
    • 권종형황인수고은석채찬병심세준로버스히스
    • H04B7/06H04B15/00
    • H04B7/0456H04B7/0452H04B7/0621
    • A signal processing apparatus and a method thereof are provided to update a transmission precoding matrix and transmission weight matrix, repetitively by using channel information and interference information, thereby effectively removing the interference generated in the external cell and internal cell. A base station apparatus in an MU MIMO(Multi-User Multiple Input Multiple Output) wireless communication system comprises a control information checkup device(202), a matrix decider(204), a control information generator(206), a modulator(208), a precoder(210), a signal buffer(212), a multiplexer(214), and a plurality of RFs(216-1_216-N). The control information checkup device confirms the control information received from a terminal. The matrix decider determines a precoding matrix to be used in the base station and a weight matrix to be used in the terminal by using the channel information and interference information. The control information generator produces the control information to be transmitted to the terminal. The modulator modulates information bit strings to be transmitted to each terminal to produce complex symbols. The precoder multiplies transmission signals to each terminal by a corresponding precoding matrix.
    • 提供信号处理装置及其方法,通过使用信道信息和干扰信息来重复地更新传输预编码矩阵和传输权重矩阵,从而有效地消除在外部小区和内部小区中产生的干扰。 MU MIMO(多用户多输入多输出)无线通信系统中的基站装置包括控制信息检验装置(202),矩阵判定器(204),控制信息生成器(206),调制器​​(208) ,预编码器(210),信号缓冲器(212),多路复用器(214)和多个RF(216-1_216-N)。 控制信息检查装置确认从终端接收到的控制信息。 矩阵决定器通过使用信道信息和干扰信息确定要在基站中使用的预编码矩阵和要在终端中使用的加权矩阵。 控制信息生成器产生要发送到终端的控制信息。 调制器调制要发送到每个终端的信息位串,以产生复杂的符号。 预编码器通过相应的预编码矩阵将传输信号乘以每个终端。
    • 37. 发明公开
    • 다중 입출력 무선통신 시스템에서 제한된 피드포워드를이용한 빔포밍 장치 및 방법
    • 用于多输入多输出无线通信系统中的有限输入的装置和方法
    • KR1020080104999A
    • 2008-12-03
    • KR1020080050163
    • 2008-05-29
    • 삼성전자주식회사보드 오브 리전츠, 더 유니버시티 오브 텍사스 시스템
    • 황인수권종형마자레세로버트히스주니어채찬병
    • H04B7/155H04B7/02H04B7/06
    • H04B7/0417H04B7/0452H04B7/0626H04B7/0639H04B7/0665
    • An apparatus and a method for beamforming in a MIMO(Multiple Input Multiple Output) wireless communication are provided to be adapted to the situation of the limited capacity of a control channel for exchanging beamforming vector selection information in a MIMO wireless communication system. A method for operating a base station in an MIMO wireless communication system comprises the steps of: repeatedly calculating, using information of downlink channel matrixes of spatial multiple access user terminals, downlink beamforming vectors of the user terminals to calculate the optimal beamforming vectors for the user terminals(201-207); quantizing the downlink beamforming vectors in order to transmit information of the downlink beamforming vectors(211); feeding forward information of the quantized downlink beamforming vectors to the user terminals over a control channel; calculating the final downlink beamforming vectors of the user terminals in consideration of an error due to the quantization; and summing the beamformed TX signals of the user terminals in accordance with the final downlink beamforming vectors and transmitting the summed TX signals through a plurality of TX antennas(213-221).
    • 提供了一种用于MIMO(多输入多输出)无线通信中的波束成形的装置和方法,以适应于MIMO无线通信系统中用于交换波束成形向量选择信息的控制信道的有限容量的情况。 一种用于在MIMO无线通信系统中操作基站的方法包括以下步骤:重复计算使用空间多址用户终端的下行链路信道矩阵的信息,用户终端的下行链路波束成形向量,以计算用户的最佳波束成形向量 终端(201-207); 量化下行链路波束形成向量以便发送下行链路波束形成向量(211)的信息; 通过控制信道将量化的下行链路波束成形向量的信息前馈给用户终端; 考虑到由于量化造成的误差,计算用户终端的最终下行波束成形向量; 并根据最终的下行链路波束成形向量对用户终端的波束形成的TX信号进行求和,并通过多个TX天线发送求和的TX信号(213-221)。