Multiple-Input Multiple-Output OFDM with Index Modulation

TL;DR

This paper introduces a MIMO-OFDM-IM scheme that combines index modulation with MIMO techniques, resulting in improved error performance over traditional MIMO-OFDM systems, with a low complexity transceiver design.

Contribution

It proposes a novel MIMO-OFDM-IM scheme integrating index modulation with MIMO, and demonstrates its superior error performance through simulations.

Findings

Significantly better error performance than classical MIMO-OFDM.

Low complexity transceiver structure developed.

Effective in various system configurations.

Abstract

Orthogonal frequency division multiplexing with index modulation (OFDM-IM) is a novel multicarrier transmission technique which has been proposed as an alternative to classical OFDM. The main idea of OFDM-IM is the use of the indices of the active subcarriers in an OFDM system as an additional source of information. In this work, we propose multiple-input multiple-output OFDM-IM (MIMO-OFDM-IM) scheme by combining OFDM-IM and MIMO transmission techniques. The low complexity transceiver structure of the MIMO-OFDM-IM scheme is developed and it is shown via computer simulations that the proposed MIMO-OFDM-IM scheme achieves significantly better error performance than classical MIMO-OFDM for several different system configurations.