Invention Grant
- Patent Title: Apparatus and method for generating log likelihood ratio in multiple-input multiple-output communication system
- Patent Title (中): 在多输入多输出通信系统中产生对数似然比的装置和方法
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Application No.: US11784435Application Date: 2007-04-06
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Publication No.: US07864896B2Publication Date: 2011-01-04
- Inventor: Keun-Chul Hwang , Soong-Yoon Choi , Soon-Young Yoon
- Applicant: Keun-Chul Hwang , Soong-Yoon Choi , Soon-Young Yoon
- Applicant Address: KR
- Assignee: Samsung Electronics Co., Ltd
- Current Assignee: Samsung Electronics Co., Ltd
- Current Assignee Address: KR
- Agency: The Farrell Law Firm, LLP
- Priority: KR10-2006-0031377 20060406
- Main IPC: H04L27/06
- IPC: H04L27/06
Abstract:
An apparatus and method for generating LLRs in an MIMO communication system. In a receiver for a spatial multiplexing communication system, a determiner performs an MML decoding operation in an ascending or descending order of TX antennas to estimate a plurality of candidate TX vectors. A distance calculator calculates a Euclidean distance for each of the candidate TX vectors from the determiner. An LLR calculator calculates LLRs using the Euclidean distances from the distance calculator. Accordingly, it is possible to generate an LLR with high reliability at low complexity in an MIMO communication system.
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