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FrFT-based EO-STBC multicarrier system for transmission over doubly-dispersive channels

Hussin, Mohammed Nuri and Solyman, Ahmed and Weiss, Stephan and Soraghan, John (2012) FrFT-based EO-STBC multicarrier system for transmission over doubly-dispersive channels. [Proceedings Paper]

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Abstract

This paper focuses on the enhancement of extended orthogonal space-time block coding (EO-STBC) when transmitting over a doubly-dispersive channel. The frequency selective nature of the channel favours the combination with a multicarrier approach such as orthogonal frequency division multiplexing (OFDM). However, as Doppler spread increases, OFDM loses its orthogonality, resulting in severe inter-symbol (ISI) and inter-carrier interference (ICI). This is addressed firstly by the generalisation of OFDm to fractional Fourier transform (FrFT)-based multicarrier approaches, which can provide better resilience in the presence of Doppler spread. Secondly, in higher mobility scenarios, an equalisation scheme is employed, whose lower complexity in an FrFT-based multicarrier setting can further minimised by a reduction of the equaliser. Simulation results highlighting the potential performance improvements are presented.

Item type: Proceedings Paper
ID code: 41929
Keywords: FrFT-based, EO-STBC multicarrier system , transmission, doubly-dispersive channels, fractional fourier transform, space time coding , multicarrier transmission, low complexity equalisation, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Technology and Innovation Centre > Sensors and Asset Management
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 05 Nov 2012 16:00
    Last modified: 14 Jun 2013 16:26
    URI: http://strathprints.strath.ac.uk/id/eprint/41929

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