Myllylä, MarkusCavallaro, Joseph R.Juntti, Markku2012-06-042012-06-042011-05-01M. Myllylä, J. R. Cavallaro and M. Juntti, "Architecture Design and Implementation of the Metric First List Sphere Detector Algorithm," <i>IEEE Transactions on Very Large Scale Integration (VLSI) Systems,</i> vol. 18, no. 5, 2011.10.1109/TVLSI.2010.2041800http://scholar.google.com/scholar?cluster=3080487293001472854&hl=en&as_sdt=0,44https://hdl.handle.net/1911/64206Soft-output detection of a multiple-input–multiple-output (MIMO) signal pose a significant challenge in future wireless systems. In this paper, we introduce a soft-output modified metric first (MMF)-LSD algorithm for MIMO detection. We design a scalable architecture and address a method to decrease memory requirements. We provide implementation results for a spatial multiplexing (SM) system with four transmitted streams and with 16- and 64-quadrature amplitude modulation (QAM) on a 0.18- m CMOS application specific integrated circuit (ASIC) technology. The MFF-LSD implementation is more efficient than the depth first (DF) -LSD in the crucial low signal-to-noise rate (SNR)region and the detection rate of the 64-QAM implementation is 39.2 Mbps@26 db with 48.2 kGEs complexity.engASICArchitectureImplementationList sphere detector (LSD)Multiple-input multiple-output (MIMO)Soft-output detectorJournal articlehttp://dx.doi.org/10.1109/TVLSI.2010.2041800