Interdigital transducers on a piezoelectric thin-film for signal compression
A piezoelectric thin-film suspended above a carrier substrate. An input interdigital transducer
(IDT) having first interdigitated electrodes is disposed at different locations along the …
(IDT) having first interdigitated electrodes is disposed at different locations along the …
LoRa+: An extension of LoRaWAN protocol to reduce infrastructure costs by improving the Quality of Service
LoRa is a popular Low Power Wide Area Network (LPWAN) standard designed for the
Internet of Things (IoT). The MAC layer protocol of LoRa is LoRaWAN. It still needs some …
Internet of Things (IoT). The MAC layer protocol of LoRa is LoRaWAN. It still needs some …
Ultra-wideband multifunctional communications/radar system
We have designed, simulated, fabricated, and tested an ultra-wideband (UWB)
multifunctional communication and radar system utilizing a single shared transmitting …
multifunctional communication and radar system utilizing a single shared transmitting …
Integrated radar and communications based on chirped spread-spectrum techniques
M Roberton, ER Brown - IEEE MTT-S International Microwave …, 2003 - ieeexplore.ieee.org
Linear frequency modulated (LFM) signals and the associated pulse compression
techniques are attractive in applications where highly secure and robust communication is …
techniques are attractive in applications where highly secure and robust communication is …
Analytical and simulation study for LoRa modulation
In this paper, the performance of Long Range (LoRa) Internet of Things (IoT) technology is
investigated. By considering Chirp Spread Spectrum (CSS) technique of LoRa, an …
investigated. By considering Chirp Spread Spectrum (CSS) technique of LoRa, an …
Frequency-shift chirp spread spectrum communications with index modulation
This article introduces a novel frequency-shift chirp spread spectrum (FSCSS) system with
index modulation (IM). By using combinations of orthogonal chirp signals for message …
index modulation (IM). By using combinations of orthogonal chirp signals for message …
Harnessing Acoustic Dispersions in YX-LN/SiO2/Si SH-SAW Resonators for Electromechanical Coupling Optimization and Rayleigh Mode Suppression
In this study, we investigate the dispersive behavior of the electromechanical coupling
coefficient () for shear-horizontal (SH) and Rayleigh surface acoustic wave (SAW) modes in …
coefficient () for shear-horizontal (SH) and Rayleigh surface acoustic wave (SAW) modes in …
Performance of chirp spread spectrum in wireless communication systems
X Wang, M Fei, X Li - 2008 11th IEEE Singapore International …, 2008 - ieeexplore.ieee.org
This paper analyzes the structure and modem scheme of chirp-BOK system. In additive
white Gaussian noise channel, an approach of studying the performance of chirp-BOK is …
white Gaussian noise channel, an approach of studying the performance of chirp-BOK is …
M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method
Linear chirp spread spectrum technique is widely used in underwater acoustic
communication because of their resilience to high multipath and Doppler shift. Linear …
communication because of their resilience to high multipath and Doppler shift. Linear …
Ultranarrowband waveform for IoT direct random multiple access to GEO satellites
Direct access of small terminals in the Internet of Things (IoT) to geostationary satellites may
provide wide coverage and almost 100% availability for remote locations without access to …
provide wide coverage and almost 100% availability for remote locations without access to …