公开(公告)号：KR20090064845A

公开(公告)日：2009-06-22

申请号：KR20070132202

申请日：2007-12-17

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIM SEONG RAG ,  NAM JUN YOUNG ,  CHUNG HYUN KYU

IPC: H04L27/26 ,  H04B1/76 ,  H04B7/26

CPC classification number: H04L25/0204 ,  H04B7/0413 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/0061 ,  H04L25/0228 ,  H04L25/0236 ,  H04L25/0242 ,  H04L25/03324 ,  H04L5/0007

Abstract: A repeat channel noise variation estimate device and a method for multiple input/output orthogonal frequency division system are provided to improve the function and lower the complexity. A repeat channel for multiple input/output orthogonal frequency division system comprises: a encoder, interleaving unit, mapping unit, pilot insertion unit, and transmission antenna. The encoder encodes transmission packet. The interleaving unit performs interleaving of encoded transmission packet. The mapping unit performs the mapping of the transmission packet. The pilot insertion unit inserts pilot symbol and information symbol.

Abstract translation: 提供重复信道噪声变化估计装置和多输入/输出正交分频系统的方法，以改善功能并降低复杂度。 用于多输入/输出正交分频系统的重复信道包括：编码器，交织单元，映射单元，导频插入单元和发射天线。 编码器对传输包进行编码。 交错单元执行编码的发送分组的交织。 映射单元执行发送分组的映射。 导频插入单元插入导频符号和信息符号。

公开(公告)号：EP2819313A4

公开(公告)日：2015-12-02

申请号：EP13751342

申请日：2013-02-25

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： NAM JUN YOUNG ,  AHN JAE YOUNG

IPC: H04B7/04 ,  H04B7/06 ,  H04W72/12

CPC classification number: H04B7/0452 ,  H04B7/0456 ,  H04B7/0482 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0634 ,  H04B7/0639 ,  H04L5/0048 ,  H04W72/1226

Abstract: The present invention relates to a multi-input and multi-output communication method in a large-scale antenna system. An MIMO transmission method according to the present invention includes: obtaining statistical channel information on at least one terminal, dividing terminals into a plurality of classes and a plurality of groups based on the statistical channel information, wherein the groups depend on the classes; determining a group beam-forming matrix for each of the divided groups; performing a group beamforming transmission by group based on the group beam-forming matrix to obtain instantaneous channel information; and scheduling terminals based on the instantaneous channel information. Thus, it is possible to decrease the complexity in a scheduling and precoding calculation without an increase in the amount of wireless resources that are required for providing feedback for a reference signal and channel status information.

Abstract translation: 本发明涉及大规模天线系统中的多输入多输出通信方法。 根据本发明的MIMO传输方法包括：在至少一个终端上获取统计信道信息，基于统计信道信息将终端分成多个类和多个组，其中所述组依赖于类; 为每个划分的组确定组波束形成矩阵; 基于组波束形成矩阵进行群组波束成形传输，获得瞬时信道信息; 并基于瞬时信道信息调度终端。 因此，可以降低调度和预编码计算的复杂度，而不增加为参考信号和信道状态信息提供反馈所需的无线资源量的增加。