Related Experiment Video
Updated: Dec 10, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
Published on: March 20, 2017
Differential orthogonal frequency division multiplexing communication in water pipeline channels
Liwen Jing1, Mengdan Wang1, Yu Lu1
1College of Big Data and Internet, Shenzhen Technology University, 3002 Lantian Road, Pingshan, Shenzhen, 518118, China.
Abstract:
The problem of information transmission through water pipelines is addressed and a class of methods based on differentially encoded orthogonal frequency division multiplexing (OFDM) is proposed. Specifically, two methods are investigated; one based on conventional differential encoding with an estimation of the average time of arrival and another based on double encoding. Results show that the first approach improves performance in the low signal to noise ratio (SNR) region, while the second is better suited at high SNR. Adopting these techniques closes the performance gap between differential OFDM systems and coherent OFDM systems while retaining the benefits of computational simplicity.
Related Concept Videos
Multiple Pipe Systems
Series Configuration
In a series configuration, fluid flows sequentially from one pipe...
Uniform Depth Channel Flow
Uniform Depth Channel Flow: Problem Solving
Pipe Flowrate Measurement
The orifice meter is a simple,...
Rapidly Varying Flow
Design Example: Design of an Irrigation Channel

