Linear and Non-Linear Decoding Techniques in Multi-User MIMO Systems: A Review

Abstract: Multiple input multiple output (MIMO) supports greater data rate and higher reliability in wireless communication. MIMO technique uses the multiple antennas to achieve high transmission rate. The receiver end of the MIMO consists of linear and non-linear decoding techniques. In this paper we are discussing about the linear and non-linear decoding techniques used at the receiver. Zero forcing (ZF), Minimum mean Square error (MMSE), Maximum likelihood (ML), Sphere decoding (SD) are the methods used in wireless communication for reducing the complexity at the receiver.

Keywords: Multiple input multiple output, Zero forcing, Minimum mean square error, Maximum likelihood, Sphere decoding.