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


Zegrar S. E., ARSLAN H.

IEEE Wireless Communications Letters, vol.11, no.7, pp.1349-1353, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 7
  • Publication Date: 2022
  • Doi Number: 10.1109/lwc.2022.3167134
  • Journal Name: IEEE Wireless Communications Letters
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Page Numbers: pp.1349-1353
  • Keywords: Channel estimation, OFDM, Symbols, Discrete Fourier transforms, Receivers, Manganese, Transmitters, Common CP-OFDM, channel estimation, frequency-domain equalization, computational complexity
  • Istanbul Medipol University Affiliated: Yes

Abstract

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).