Orthogonal frequency division multiplexing with index modulation (OFDM-IM), which
transmits information bits through ordinary constellation symbols and indices of active …

As an attempt to tackle the low-data-rate issue of the conventional LoRa systems, we
propose two novel frequency-bin-index (FBI) LoRa schemes. In scheme I, the indices of …

Computational complexity is one of the drawbacks of orthogonal frequency division
multiplexing (OFDM)-index modulation (IM) systems. In this study, a novel IM technique is …

Quadrature phase shift keying (QPSK) is a digital modulation technique that transmits data
at a constant frequency whilst varying the phases of the carrier signal. QPSK is one of the …

With the rapid developments in the Internet of Things (IoT), low power wide area networks
(LPWAN) framework, which is a low-power, long-distance communication method, is …

This paper proposes a novel spread spectrum and sub-carrier index modulation (SS-SIM)
scheme, which is integrated to orthogonal frequency division multiplexing (OFDM) …

This paper presents dual-mode index modulation for spectral efficient frequency division
multiplexing (SEFDM-DM). SEFDM is a non-orthogonal multicarrier technique created by …

This paper analyzes the bit error rate (BER) of multicarrier index keying—orthogonal
frequency division multiplexing (MCIK-OFDM) with selection combining (SC) diversity …

As a key emerging green communication technology, signal detection based on deep
learning can improve communication performance for orthogonal frequency division …

Recently, a new transmission method has been proposed for power-efficient wireless
communication systems called Orthogonal Frequency Division Multiplexing with Index …