NDLI: A Low Complexity Loglikelihood Ratio Scheme in Coded Multiple-Input Multiple-Output Systems

Content Provider	IEEE Xplore Digital Library
Author	Xu Qiang Zhu Xudong Huang Yanhui
Copyright Year	2013
Description	Author affiliation: Center of Inf. Technol. China, Gen. Nucl. Power Corp., China (Xu Qiang; Zhu Xudong; Huang Yanhui)
Abstract	The higher data rate in coded MIMO systems needs higher performance and lower computational complexity. This paper proposes a method to improve the performance and reduce the computational complexity in coded MIMO system, such as IEEE 802.11ac. The proposed scheme based on log likelihood ratio with QRM-MLD (QRM-MLD-LLR) needs to expand the estimated channel matrix H by MMSE scheme firstly, and use the partial constellations set S to replace the all constellations set C to reduce the computational complexity by the MMSE-SIC method secondly. Simulation results show that the proposed scheme with expanding H by MMSE can obtain better performance than non-expanding H, the proposed scheme can reduce more than 70% computational complexity but keep only 0.5dB performance loss.
Starting Page	627
Ending Page	629
File Size	239020
Page Count	3
File Format	PDF
ISBN	9780769551203
DOI	10.1109/IIH-MSP.2013.161
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Measurement QRM-MLD LLR MMSE-SIC MIMO Simulation Channel estimation Receiving antennas MIMO Computational complexity
Content Type	Text
Resource Type	Article

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