Directional modulation (DM) has emerged as a highly promising physical layer security technique that embeds confidential information into the spatial characteristics of the transmitted signal. By ...

Signal modulation is one of the most basic and important concepts in the RF industry. It consists of using the variation of one or more parameters of a carrier signal to transmit information, ...

Backscatter communication systems utilise the reflection and modulation of pre‐existing radio frequency signals to enable ultra‐low-power, sustainable wireless links. This technique is emerging as a ...

As the number of higher-throughput applications grows, so does the need for a wider bandwidth and network coverage in wireless systems. Given limited spectrum allocation, wireless communication ...