公开(公告)号：KR1020130021972A

公开(公告)日：2013-03-06

申请号：KR1020110084579

申请日：2011-08-24

Applicant: 목포대학교산학협력단

Inventor： 정민아 ,  나영화 ,  송익호 ,  임병수 ,  정지원 ,  박선 ,  이성로

IPC: H04B7/04

CPC classification number: H04B7/0413 ,  H03M13/1102 ,  H03M13/1125

Abstract: PURPOSE: A log-likelihood ratio(LLR) estimation method in a multi-input multi-output(MIMO) channel is provided to separate a soft-decision bit without performance degradation by using a candidate vector. CONSTITUTION: A mapping point is selected as a candidate vector. The mapping point is located within a predetermined range based on I-ch and Q-ch values of receiving signals among mapping points estimated in a receiving end. Log-likelihood computation is performed by using the selected candidate vector. The log-likelihood computation is performed by reflecting the number of transmitting antennas, the number of receiving antennas, and a modulation method for dividing the receiving signals into data of the number of transmitting antennas. [Reference numerals] (AA) Selected four candidate vectors with the same sign as that of a receiving signal; (BB) Receiving signal

Abstract translation: 目的：提供多输入多输出（MIMO）信道中的对数似然比（LLR）估计方法，以通过使用候选向量来分离软判决比特而不降低性能。 构成：选择一个映射点作为候选向量。 基于在接收端估计的映射点之间的接收信号的I-ch和Q-ch值，映射点位于预定范围内。 通过使用选择的候选向量来执行对数似然计算。 通过将发送天线的数量，接收天线的数量和用于将接收信号分割为发送天线数的数据的调制方法进行对数似然计算。 （附图标记）（AA）选择与接收信号具有相同符号的四个候选向量; （BB）接收信号