Expanded Multiband Super-Nyquist CAP Modulation for Highly Bandlimited Organic Visible Light Communications

Petr Chvojka, Paul Anthony Haigh, Alessandro Minotto, Andrew Burton, Petri Murto, Zewdneh Genene, Wendimagegn Mammo, Mats R. Andersson, Ergang Wang, Zabih Ghassemlooy, Franco Cacialli, Izzat Darwazeh, Stanislav Zvanovec

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


In this article, we experimentally demonstrate a novel expanded nonorthogonal multiband super-Nyquist carrier-less amplitude and phase (m-ESCAP) modulation for bandlimited organic visible light communication (VLC) systems. The proposed scheme has the same bandwidth requirement as the conventional m-CAP while breaking the orthogonality between subcarriers by purposely overlapping them. We compare m-ESCAP with the conventional m-CAP and a compressed nonorthogonal version of m-CAP (m-SCAP) in terms of measured bit error rate (BER) performance, bit rates, and spectral efficiencies. We show that the m-ESCAP system offers improvement in the bit rate of ∼10% and 20% compared to the m-CAP and m-SCAP, respectively, and in the spectral efficiency of ∼20% compared to m-CAP. These gains are achieved at the cost of increased BER, which, however, remains below the 7% forward error correction limit.

Original languageEnglish
Pages (from-to)2544-2550
Number of pages7
Issue number2
Publication statusPublished - Jun 2020


  • Digital signal processing
  • multiband carrier-less amplitude and phase (CAP) modulation
  • nonorthogonal
  • organic light emitting diode (LED)
  • visible light communications (VLC)


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