Open AccessAn Efficient Soft‐Output MIMO Detection Method Based on a Multiple‐Channel‐Ordering Technique
Author(s) -
Im Tae Ho,
Park Insoo,
Yoo Hyun Jong,
Yu Sungwook,
Cho Yong Soo
Publication year - 2011
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.11.0110.0574
Subject(s) - mimo , single antenna interference cancellation , computer science , channel (broadcasting) , algorithm , detector , interference (communication) , set (abstract data type) , qam , electronic engineering , multiplexing , propagation of uncertainty , quadrature amplitude modulation , bit error rate , telecommunications , engineering , programming language
In this paper, we propose an efficient soft‐output signal detection method for spatially multiplexed multiple‐input multiple‐output (MIMO) systems. The proposed method is based on the ordered successive interference cancellation (OSIC) algorithm, but it significantly improves the performance of the original OSIC algorithm by solving the error propagation problem. The proposed method combines this enhanced OSIC algorithm with a multiple‐channel‐ordering technique in a very efficient way. As a result, the log likelihood ratio values can be computed by using a very small set of candidate symbol vectors. The proposed method has been synthesized with a 0.13‐μm CMOS technology for a 4×4 16‐QAM MIMO system. The simulation and implementation results show that the proposed detector provides a very good solution in terms of performance and hardware complexity.