Common CP-OFDM Transceiver Design for Low-Complexity Frequency Domain Equalization

Zegrar S. E., ARSLAN H.

IEEE Wireless Communications Letters, cilt.11, sa.7, ss.1349-1353, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 11 Sayı: 7
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1109/lwc.2022.3167134
  • Dergi Adı: IEEE Wireless Communications Letters
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Sayfa Sayıları: ss.1349-1353
  • Anahtar Kelimeler: Channel estimation, OFDM, Symbols, Discrete Fourier transforms, Receivers, Manganese, Transmitters, Common CP-OFDM, channel estimation, frequency-domain equalization, computational complexity
  • İstanbul Medipol Üniversitesi Adresli: Evet

Özet

Common cyclic prefix-orthogonal frequency-division multiplexing (CCP-OFDM) groups multiple OFDM symbols and uses one CP to protect them in slow time-variant channels. However, due to this particular design of CCP-OFDM systems, complex time-domain estimation algorithms are used to estimate and equalize the channel, such as maximum likelihood (ML) estimators. In this letter, we propose a novel CCP-OFDM transceiver design enabling low-complexity frequency-domain channel estimation and equalization. Simulations under frequency selective channels have validated the effectiveness of the proposed scheme in terms of computational complexity, normalized mean squared error (NMSE), and bit error rate (BER).