Pilot Assisted MIMO-OFDM-IM Design for Time-Varying Underwater Acoustic Communications

Altabbaa M. T.

Wireless Personal Communications, cilt.121, sa.1, ss.399-409, 2021 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 121 Sayı: 1
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1007/s11277-021-08642-6
  • Dergi Adı: Wireless Personal Communications
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Applied Science & Technology Source, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC
  • Sayfa Sayıları: ss.399-409
  • Anahtar Kelimeler: Index modulation, MIMO, Space-frequency, Underwater acoustic communications
  • İstanbul Yeni Yüzyıl Üniversitesi Adresli: Evet

Özet

This paper proposes a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing-index modulation (OFDM-IM) design for underwater acoustic communications. The proposed MIMO-OFDM-IM utilizes an equally spaced known data (pilot subcarriers). This feature assists in overcoming different dilemmas that arise in underwater acoustic time-varying channels. In addition, the pilot subcarriers of the proposed communication scheme assists in channel estimation. This feature improves the overall performance of the maximum likelihood detector in the active subcarriers detection. The performance of the proposed transceiver scheme is presented using synthetic underwater acoustic channels. The proposed approach shows enhancement in the symbol error rate and outperforms the conventional MIMO-OFDM approach.