公开(公告)号：KR1020070090587A

公开(公告)日：2007-09-06

申请号：KR1020060020486

申请日：2006-03-03

Applicant: 삼성전자주식회사 ,  재단법인서울대학교산학협력재단

Inventor： 방지원 ,  최영관 ,  김동구

IPC: H04B7/04

CPC classification number: H04L1/0625 ,  H04L1/0668 ,  H04B7/0456

Abstract: An apparatus and a method for transmitting/receiving signals in a MIMO(Multiple Input Multiple Output) mobile communication system are provided to obtain the maximum diversity gain and the maximum data rate by suggesting a quasi-orthogonal space-time mapping scheme. A signal transmitting apparatus in a MIMO mobile communication system comprises the first pre-encoder(313-1), the second pre-encoder(313-2), and a space-time mapper(315). The first pre-encoder(313-1) pre-encodes an inputted upper Tx vector according to a preset pre-encoding scheme and creates an upper pre-encoded symbol stream. The second pre-encoder(313-2) pre-encodes an inputted lower Tx vector according to the pre-encoding scheme and creates a lower pre-encoded symbol stream. The space-time mapper(315) performs space-time mapping for the upper pre-encoded symbol stream and the lower pre-encoded symbol stream according to the number of Tx antennas to be used and a preset space-time mapping scheme and creates a space-time mapped matrix. The space-time mapper(315) judges whether null transmission exists in the space-time mapped matrix, creates a corresponding codeword, and transmits it.

Abstract translation: 提供了一种用于在MIMO（多输入多输出）移动通信系统中发送/接收信号的装置和方法，以通过建立准正交空时映射方案来获得最大分集增益和最大数据速率。 MIMO移动通信系统中的信号发送装置包括第一预编码器（313-1），第二预编码器（313-2）和空时映射器（315）。 第一预编码器（313-1）根据预设的预编码方案对输入的上层Tx矢量进行预编码，并创建上预编码符号流。 第二预编码器（313-2）根据预编码方案对输入的低Tx矢量进行预编码，并创建较低的预编码符号流。 时空映射器（315）根据要使用的Tx天线的数量和预设的时空映射方案，执行上预编码符号流和下预编码符号流的空时映射，并创建 时空映射矩阵。 空时映射器（315）判断在空时映射矩阵中是否存在空传输，创建相应的码字并发送它。

公开(公告)号：KR1020090055151A

公开(公告)日：2009-06-02

申请号：KR1020070121923

申请日：2007-11-28

Applicant: 삼성전자주식회사 ,  재단법인서울대학교산학협력재단

Inventor： 조성윤 ,  김동구 ,  김요한

IPC: H04B7/04 ,  H04B7/02

CPC classification number: H04W72/1226 ,  H04B7/0417 ,  H04B7/0617

Abstract: A method and an apparatus for transmission in a multiple input multiple output communication system are provided to transmit data efficiently by adaptively an antenna transmission method and a beam-forming method that uses a code book. A transmission method selector(402) calculates the capacity loss amounts of both first and second transmission methods depending on variables. The transmission method selection unit compares the capacity loss amount of the first transmission method with that of the second transmission method. A transmitter transmits a probing signal for channel estimation of a base station(400), and receives scheduling information from a base station. The data are transmitted according to the scheduling information.

Abstract translation: 提供了一种用于在多输入多输出通信系统中传输的方法和装置，用于通过自适应地使用码本的天线传输方法和波束形成方法来有效地发送数据。 传输方法选择器（402）根据变量计算第一和第二传输方法的容量损失量。 传输方法选择单元将第一传输方法的容量损失量与第二传输方法的容量损失量进行比较。 发射机发送用于基站（400）的信道估计的探测信号，并从基站接收调度信息。 根据调度信息发送数据。