Ambient backscatter communication systems harness ambient radio-frequency (RF) signals to enable ultra-low-power, battery-free data transmission. Unlike conventional radios that generate their own ...

The researchers used circuit modeling, advanced modulation techniques, and polarization diversity to design a MIMO transceiver system for BackCom applications, achieving a spectral efficiency of 2.0 ...

Researchers have found a low-power, inexpensive way for large numbers of devices, such as machines in factories and equipment in labs, to share information by efficiently using signals at untapped ...

A battery-free system could send signals across kilometer-scale distances to aid climate monitoring and more. MIT researchers have demonstrated a technology that can transmit underwater signals much ...

Challenges in approaches to creating underwater communication links. How a unique piezoelectric array can be used for zero-power links. The special electrical and mechanical issues addressed when ...