TY - GEN
T1 - FrFT-based EO-STBC multicarrier system for transmission over doubly-dispersive channels
AU - Hussin, Mohamed Nuri
AU - Solyman, Ahmed A.A.
AU - Weiss, Stephan
AU - Soraghan, John J.
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
KW - fractional Fourier transform
KW - low complexity equalisation
KW - multicarrier transmission
KW - space time coding
U2 - 10.1109/ISWCS.2012.6328455
DO - 10.1109/ISWCS.2012.6328455
M3 - Conference contribution
AN - SCOPUS:84871285634
SN - 9781467307604
T3 - Proceedings of the International Symposium on Wireless Communication Systems
SP - 686
EP - 690
BT - 2012 International Symposium on Wireless Communication Systems, ISWCS 2012 - Proceedings
T2 - 2012 9th International Symposium on Wireless Communication Systems
Y2 - 28 August 2012 through 31 August 2012
ER -