Spectrum reconstruction from MIMO perspectives for realizing low-cost on-chip spectrometers

In this paper, we initiate to introduce signal detection techniques from multiple-input-multiple-output (MIMO) wireless communication systems to tackle the challenge of spectrum reconstruction for using ultra low-cost filter array spectrum sensors. We introduce the mathematical model of MIMO communication systems and show the similarity to that of the ultra low-cost filter-array spectrum sensors. Spectrum reconstruction from MIMO perspectives is demonstrated in both simulation and real-world experiment.