Related Experiment Video
Updated: Jan 18, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
Published on: March 20, 2017
Designand Implementation of a Novel Wideband HF Communication System Based on NC-OFDM and Probabilistic Shaping
Rifei Yang1, Yong Bai1, Zhuhua Hu1
1School of Information and Communication Engineering, Hainan University, Haikou 570228, China.
Abstract:
This paper proposes a novel wideband high-frequency (HF) communication system supporting video transmission based on non-contiguous orthogonal frequency division multiplexing (NC-OFDM) and probabilistic shaping (PS). The HF spectrum is currently very crowded; to find a free continuous frequency band around 500 KHz for video transmission is almost impossible. So this paper investigates how to exploit spectrum holes in the HF band with NC-OFDM technology. We propose a transmission scheme over a wideband HF channel modeled by the Institute for Telecommunication Sciences (ITS) channel model with valid bandwidth up to 1 MHz. In order to improve the reliability of proposed scheme, this paper further investigates the probabilistic shaping-based coding modulation. Simulation results show that the designed wideband HF NC-OFDM communication system can meet the data rate required for video transmission. In addition, the probabilistic shaping-based coding modulation provides a significant performance improvement over uncoded systems and the probabilistic shaping offers an extra 0.6 dB shaping gain in the wideband HF channel compared to equal probability constellation systems.
Related Concept Videos
Design Example
Frequency-Domain Interpretation of PD Control
The proportional control gain, combined with the...
Transmission Line Design Considerations
Propagation of Uncertainty from Random Error
Maximum Power Transfer
By substituting the entire circuit with...
Receiver Operating Characteristic Plot

