Invention Grant
US09246724B2 Method and apparatus for performing soft demapping in rotated quadrature amplitude modulation (QAM) based communication system
有权
在基于旋转正交幅度调制（QAM）的通信系统中执行软解映射的方法和装置
- Patent Title: Method and apparatus for performing soft demapping in rotated quadrature amplitude modulation (QAM) based communication system
- Patent Title (中): 在基于旋转正交幅度调制（QAM）的通信系统中执行软解映射的方法和装置
-
Application No.: US14200739Application Date: 2014-03-07
-
Publication No.: US09246724B2Publication Date: 2016-01-26
- Inventor: Peng Xue , Kyeong Yeon Kim , Ki Taek Bae , Navneet Basutkar , Ho Yang
- Applicant: Samsung Electronics Co., Ltd.
- Applicant Address: KR Suwon-si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Agency: NSIP Law
- Priority: KR10-2013-0027779 20130315; KR10-2013-0146507 20131128
- Main IPC: H03D3/22
- IPC: H03D3/22 ; H04L27/22 ; H04L27/06 ; H04L25/06 ; H04L27/38 ; H04L27/34
Abstract:
A soft demapping apparatus and method thereof includes a pre-processing unit to pre-process a reception signal obtained from a symbol representing bits. A candidate selection unit selects two candidates from among constellation points included in a constellation for each of the bits. A distance calculation unit calculates a Euclidean distance between the reception signal and the two candidates. A log-likelihood ratio (LLR) calculation unit calculates an LLR with respect to the bits based on the Euclidean distance between the reception signal and the two candidates.
Public/Granted literature
Information query
IPC分类:
