AFDM-Based Integrated System for Underwater Detection and Communication Waveform Design

Qixiang Niu, Wentao Shi, David Ramirez, Lianyou Jing, Qunfei Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Affine Frequency Division Multiplexing (AFDM) is an advanced communication waveform designed specifically for time-varying channels. This chirp-based multicarrier modulation technique is computationally efficient, which enables compact sonar implementations while achieving robust sensing performance through flexible parameter adjustments. Such characteristics make AFDM well-suited for Integrated Systems for Underwater Detection and Communication (ISUDC). In this paper, we explore an AFDM-based ISUDC system and propose a waveform model capable of transmitting multiple symbols to increase data capacity. We derive the Wideband Ambiguity Function (WAF) for this waveform and enhance it using complementary sequence coding, which reduces sensitivity to WAF variations and improves detection accuracy. Simulation results demonstrate that the proposed AFDM-based ISUDC waveform, featuring both multi-symbol support and complementary sequence coding, increases data capacity and improves communication bit error rate (BER) compared to traditional ISUDC waveforms. Additionally, the optimized WAF achieves enhanced detection performance, fulfilling critical ISUDC requirements.

Original languageEnglish
Title of host publication2025 IEEE Wireless Communications and Networking Conference, WCNC 2025
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350368369
DOIs
StatePublished - 2025
Event2025 IEEE Wireless Communications and Networking Conference, WCNC 2025 - Milan, Italy
Duration: 24 Mar 202527 Mar 2025

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Conference

Conference2025 IEEE Wireless Communications and Networking Conference, WCNC 2025
Country/TerritoryItaly
CityMilan
Period24/03/2527/03/25

Keywords

  • Affine frequency division multiplexing (AFDM)
  • ambiguity function
  • complementary sequence code
  • integrated systems for underwater detection and communication (ISUDC)
  • waveform design

Fingerprint

Dive into the research topics of 'AFDM-Based Integrated System for Underwater Detection and Communication Waveform Design'. Together they form a unique fingerprint.

Cite this