Differential Frequency Hopping (DFH) Modulation for Underwater Acoustic Communications and Networking
Abstract
The objective of this effort was to adapt existing differential frequency hopping (DFH) algorithms developed for terrestrial communications for use in the doubly spread underwater acoustic channel by developing synchronization and demodulation schemes that are robust to various aspects of the environment using the DFH signal itself, and equalization algorithms that exploit available spatial diversity for improving the bit error rate (BER). The Sonar Simulation Toolkit (SST) was used to simulate the propagation of communication sequences through the underwater acoustic environment to specify an ocean environment with a wide variety of parameters relevant to acoustic signal propagation and reception. DFH data collected during at-sea experiments was used as a validation tool for simulated environments and more accurate modeling of underwater environments of interest for DFH-based acoustic communications.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 09, 2009
- Accession Number
- ADA533550
Entities
People
- Luca Cazzanti
Organizations
- University of Washington