Adaptive 2×2 MIMO employed Wavelet-OFDM-Radio over Fibre Transmission

Vishal Vishal, Sergey Sergeyev, Jaswinder Kaur

Research output: Contribution to journalArticlepeer-review


Due to high peak-to-average-power ratio (PAPR) and low spectral-efficiency, the conventional Fast Fourier Transform based orthogonal frequency division multiplexing (OFDM) is losing its place to the other multicarrier modulation schemes. Alternatively, the wavelet treated multiple-input multiple-output (MIMO)-OFDM is gaining its popularity in realization of futuristic 5G networks due to proffering high spectral-efficiency, low-cost and low phase-noise. Subsequently, this work demonstrates a RF transmission system in S-band employing \times 2$ MIMO-OFDM using orthogonal- and biorthogonal-wavelets with diverse phase shift keying modulation (PSK) schemes. Among the available MIMO configurations, the authors implement spatial diversity as it promises good reliability in noisy links [11]. However, the distribution of Wavelet-OFDM (W-OFDM) signals over a radio over fibre (RoF) link is critically affected by the optical sub-system non-linearity. So, the simplest \times 2$ Alamouti's space-time block code (STBC) is implemented in this work to overcome this non-linearity and to realize a less-complex detection. The work is further extended to realize an adaptive MIMO-RoF system employing W-OFDM scheme to adjust itself to a suitable available phase shift keying strategy as per the link-situation to retain an optimal balance of link-quality and spectral-efficiency.

Original languageEnglish
Article number8972383
Pages (from-to)23336-23345
Number of pages10
JournalIEEE Access
Early online date28 Jan 2020
Publication statusPublished - 6 Feb 2020

Bibliographical note

This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see
This work is carried out in Aston Institute of Photonic Technologies, Aston University, Birmingham, UK and is supported by European Union sponsored
H2020-MSCA-IF-EF-ST project


  • Link-adaptation
  • MIMO
  • OFDM
  • radio over fibre
  • wavelet


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