Related Experiment Video
Updated: Dec 14, 2025

Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
Constellation optimization under the ergodic VLC channel based on generalized spatial modulation
Abstract:
When the generalized spatial modulation (GSM) is applied to visible light communication (VLC), radio frequency (RF) technologies, such as constellation designs, should be modified for the ergodic VLC channel, which is different from that in typical RF environments. In this paper, constellations of amplitude-phase modulation (APM) symbols are optimized for GSM-based VLC systems in which optical signals must be real-valued and non-negative, while the ergodic VLC channel and the random characteristic of receiver locations are also considered. The algorithm of statistically convergent gradient descent (SCGD) is adopted for the maximization of coded modulation average mutual information (CM-AMI), and superior performances of optimal constellations are verified by numerical simulations.
Related Concept Videos
Propagation Speed of Electromagnetic Waves
Receiver Operating Characteristic Plot
Maximum Power Transfer
By substituting the entire circuit with...
Generating Electromagnetic Radiations
Flame Photometry: Overview
IR Frequency Region: X–H Stretching

