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Energy efficient joint iterative SIC-MMSE MIMO detection  

Ngayahala, F.C. Kamaha (전북대학교 전자공학부 IT융합연구센터)
Ahmed, Saleem (전북대학교 전자공학부 IT융합연구센터)
Kim, Sooyoung (전북대학교 전자공학부 IT융합연구센터)
Publication Information
Journal of Satellite, Information and Communications / v.10, no.1, 2015 , pp. 22-28 More about this Journal
Abstract
In this paper, we propose a new computationally efficient joint iterative multi-input multi-output (MIMO) detection scheme using a soft interference cancellation and minimum mean squared-error (SIC-MMSE) method. The critical computational burden of the SIC-MMSE scheme lies in the multiple inverse operations of the complex matrices. We find a new way which requires only a single matrix inversion by utilizing the Taylor series expansion of the matrix, and thus the computational complexity can be reduced. The computational complexity reduction increases as the number of antennas is increased. The simulation results show that our method produces almost the same performances as the conventional SIC-MMSE with reduced computational complexity.
Keywords
multiple-input multiple-output (MIMO); minimum mean squared-error (MMSE); iterative detection; soft detection;
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