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 ...

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 ...

Researchers have developed a new chip-sized microwave photonic filter to separate communication signals from noise and suppress unwanted interference across the full radio frequency spectrum. The ...