An Architecture for Grant-Free Massive MIMO MTC Based on Compressive Sensing

In this work, a processing architecture for grant-free machine type communication based on compressive sensing is proposed. The architecture can be adapted for a number of parameters. An instantiation for 128 terminals and 96 antennas is implemented. Without memories it consumes 1.52 W and occupies and area of 5.1 mm
²
in a 28 nm SOI CMOS process. The implemented instance can process about 10k messages per second, each containing four bits.