TY - JOUR
T1 - Low-complexity ICI suppression for OFDM over time- and frequency-selective Rayleigh fading channels
AU - Cai, Xiaodong
AU - Giannakis, Georgios B
PY - 2002
Y1 - 2002
N2 - While rapid variations of the fading channel cause intercarrier interference (ICI) in OFDM, thereby degrading its performance considerably, they also introduce temporal diversity, which can be exploited to improve the performance. In this paper, we first derive a matched filter bound (MFB) for OFDM transmissions over doubly-selective Rayleigh fading channels, which benchmarks the best possible performance if ICI is completely cancelled without noise enhancement. We then develop low-complexity MMSE and DFE receivers for ICI suppression. Simulations show that the DFE receiver can collect significant gains of ICI-impaired OFDM with affordable complexity.
AB - While rapid variations of the fading channel cause intercarrier interference (ICI) in OFDM, thereby degrading its performance considerably, they also introduce temporal diversity, which can be exploited to improve the performance. In this paper, we first derive a matched filter bound (MFB) for OFDM transmissions over doubly-selective Rayleigh fading channels, which benchmarks the best possible performance if ICI is completely cancelled without noise enhancement. We then develop low-complexity MMSE and DFE receivers for ICI suppression. Simulations show that the DFE receiver can collect significant gains of ICI-impaired OFDM with affordable complexity.
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M3 - Conference article
AN - SCOPUS:0037629420
SN - 1058-6393
VL - 2
SP - 1822
EP - 1826
JO - Conference Record of the Asilomar Conference on Signals, Systems and Computers
JF - Conference Record of the Asilomar Conference on Signals, Systems and Computers
T2 - The Thirty-Sixth Asilomar Conference on Signals Systems and Computers
Y2 - 3 November 2002 through 6 November 2002
ER -