Simulación de las técnicas de precodificación ZM, MMSE y BD en un sistema MU-MIMO-OFDM en Matlab.

Abstract

This paper presents the simulation of the precoding techniques ZF (Zero Forcing), MMSE (Minimum Mean Square Error) and BD (Block Diagonalization) for a MU – MIMO – OFDM (Multiuser Multiple-input Multiple-output – Orthogonal Frequency-Division Multiple Access) system. In order to find the precoder with better performance, the results are presented in graphs BER (Bit Error Rate) vs Eb/No (Energy Per-Bit To Noise Power Spectral Density Ratio). This work shows theory related to the system’s features and ZF, MMSE and BD precoding algorithms. This paper also explains some important particularities to take account for programing precoding algorithms. Finally, the obtained graphs after the simulation for different antenna arrays, several modulations and precoders are presented as BER vs Eb/No curve