Efficient SIC-MMSE MIMO detection with three iterative loops

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• 作者：Saleem Ahmed^a ; ^{saleem3714@gmail.com} ; Sooyoung Kim^b ; ^{sookim@jbnu.ac.kr}
• 关键词：Multiple-input multiple-output (MIMO) ; Joint iterative detection and decoding (JIDD) ; Soft MIMO detection ; MMSE detection
• 刊名：AEU - International Journal of Electronics and Communications
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：72
• 期：Complete
• 页码：65-71
• 全文大小：1034 K
• 卷排序：72

文摘

In this paper, we propose an efficient joint iterative detection and decoding (JIDD) scheme with a soft interference cancellation minimum mean squared error (SIC-MMSE) based method for a turbo coded multiple-input multiple-output (MIMO) system. In the proposed method, we activate a loop inside the SIC-MMSE based MIMO detection process in addition to the iterative loop between the MIMO detector and turbo decoder, so that the iteration inside the SIC-MMSE detection can be performed in parallel to the iterations inside the turbo decoder. Subsequently, soft outputs from each loop is exchanged for next further iteration, and this makes three iterative loops in total. In comparison with the conventional JIDD schemes, employing additional loop inside the MIMO detection process largely contributes to enhance the performance. In addition, the additional loop speeds up the performance convergence and eventually requires smaller overall computational complexity at the same performance.