Abstract
This paper investigates linear precoding scheme that maximizes mutual information for multiple-input multiple-output (MIMO) channels with finite-alphabet inputs. in contrast with recent studies, optimizing mutual information directly with extensive computational burden, this work proposes a low-complexity and high-performance design. It derives a lower bound that demands low computational effort and approximates, with a constant shift, the mutual information for various settings. based on this bound, the precoding problem is solved efficiently. Numerical examples show the efficacy of this method for constant and fading MIMO channels. Compared to its conventional counterparts, the proposed method reduces the computational complexity without performance loss. © 2012 IEEE.
Recommended Citation
W. Zeng et al., "A Low-complexity Design of Linear Precoding for MIMO Channels with Finite-alphabet Inputs," IEEE Wireless Communications Letters, vol. 1, no. 1, pp. 38 - 41, article no. 6107431, Institute of Electrical and Electronics Engineers, Feb 2012.
The definitive version is available at https://doi.org/10.1109/WCL.2012.121411.110025
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
finite-alphabet inputs; Linear precoder; low-complexity design; mutual information maximization
International Standard Serial Number (ISSN)
2162-2345; 2162-2337
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Feb 2012
Comments
National Science Foundation, Grant 0915846