A Tomlinson-Harashima Precoding for DFT-spread MIMO-OFDM systems

Abstract

This paper proposes a THP (Tomlinson-Harashima Precoding) scheme for DFT-spread MIMO-OFDM (Multi-Input Multi-Output Orthogonal Frequency Division Multiplexing) systems. In the proposed structure, the precoder is to be implemented in the frequency domain while the modulo operation, which is a non-linear process required to reduce the transmitter power enhancement, is carried out in the time domain. The feasibility of the proposed THP scheme will be shown by the computer simulation.