Rethinking Massive MIMO Detection: A Memristor Approach

Efficient implementation of massive multiple-input-multiple-output (MIMO) detection is essential for practical systems. To reduce the computational complexity and high power consumption in MIMO detection process, we propose a memristor-based analog circuit for massive MIMO detection in this letter. First, we present the circuit architecture and operations for minimum mean squared error (MMSE) detection using a grid of synapse based on one memristor and two transistors (2T1M), and discuss its computational complexity and power consumption. Then, we extend the above circuit design to the MMSE successive interference cancellation (SIC) detection. Finally, the circuit is implemented using Simscape in MATLAB Simulink, and we show the superiority of the proposed memristor-based MIMO detection method in communication performance and power consumption.