Effective self-cancellation of intercarrier interference for OFDM underwater acoustic communications

Xilin Cheng, Miaowen Wen, Xiang Cheng, Liuqing Yang, Zhengyuan Xu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

Orthogonal frequency division multiplexing (OFDM) techniques are attractive for underwater acoustic (UWA) communications due to their robustness against large multipath spread. However, OFDM systems in UWA channels suffer from intercarrier interference (ICI) caused by the Doppler effect. In this paper, we propose an effective mirror-mapping-based ICI self-cancellation method in OFDM UWA communications. Theoretical analyses and numerical results show that the proposed mirror-mapping-based ICI self-cancellation schemes can effectively reduce the carrier-to-interference power ratio (CIR) in comparison with the plain OFDM scheme in the additive white Gaussian noise (AWGN) channel with carrier frequency offset (CFO). To demonstrate their benefits for OFDM UWA communications, the mirror-mapping-based ICI self-cancellation schemes were tested in a recent sea experiment, conducted in Taiwan in May 2013. The decoding results show that the mirror-mapping-based ICI self-cancellation schemes improve the BER performance of the OFDM system considerably in UWA channels.

Original languageEnglish (US)
Title of host publicationProceedings of the 8th ACM International Conference on Underwater Networks and Systems, WUWNet 2013
DOIs
StatePublished - 2013
Externally publishedYes
Event8th ACM International Conference on Underwater Networks and Systems, WUWNet 2013 - Kaohsiung, Taiwan, Province of China
Duration: Nov 11 2013Nov 13 2013

Publication series

NameProceedings of the 8th ACM International Conference on Underwater Networks and Systems, WUWNet 2013

Other

Other8th ACM International Conference on Underwater Networks and Systems, WUWNet 2013
CountryTaiwan, Province of China
CityKaohsiung
Period11/11/1311/13/13

Keywords

  • ICI self-cancellation algorithms
  • Mirror-mapping
  • OFDM
  • Underwater Acoustic communications

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