Channel equalisation and data detection for SEFDM over frequency selective fading channels. Issue 18 (11th October 2018)

• Record Type: Journal Article
• Authors: Yu, Baoxian; Zhang, Han; Hong, Xudong; Guo, Changjian; Lau, Alan Pak Tao; Lu, Chao; Dai, Xianhua
• Is Part Of: IET communications. Volume 12:Issue 18(2018)
• Page Start: 2315
• Page End: 2323
• Publication Date: 2018-10-11
• Subjects: equalisers -- fading channels -- maximum likelihood detection -- intercarrier interference -- maximum likelihood estimation -- OFDM modulation -- interference suppression -- frequency‐domain analysis -- radio transceivers -- Viterbi decoding; frequency selective fading channels -- higher spectral efficiency -- OFDM -- SEFDM transceiver design -- channel equalisation -- frequency‐domain equalisation scheme -- frequency diversity -- low‐computational data detection scheme -- maximum likelihood detection -- multicarrier technology -- spectrally efficient frequency division multiplexing -- orthogonal frequency division multiplexing -- mathematical analysi -- inter‐carrier interference mitigation -- sphere decoding -- maximum a posteriori criterion -- Viterbi principle; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2018.5114
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : Spectrally efficient frequency division multiplexing (SEFDM) has been recognised as a promising multi‐carrier technology since it can offer a higher spectral efficiency than orthogonal frequency division multiplexing (OFDM). In this study, the authors provide a framework for SEFDM transceiver design and investigate the techniques of channel equalisation and data detection of SEFDM over frequency selective fading scenarios. Specifically, they first demonstrate through mathematical analysis that SEFDM with the proposed frequency‐domain equalisation scheme can benefit from the frequency diversity, and thus, performs more robust to the frequency selective fading environment than OFDM. To effectively mitigate inter‐carrier interference raised by the non‐orthogonality between sub‐carriers of SEFDM, they then propose a low‐computational data detection scheme based on the Viterbi principle and maximum a posteriori criterion. The proposed detector can provide an indistinguishable performance from the maximum likelihood detection using sphere decoding while entailing a much lower computation. Numerical results validate the superiority of SEFDM to OFDM over frequency selective fading channels.