Low-complexity ICI suppression for OFDM over time- and frequency-selective Rayleigh fading channels

Xiaodong Cai; Georgios B Giannakis

Low-complexity ICI suppression for OFDM over time- and frequency-selective Rayleigh fading channels

Xiaodong Cai, Georgios B Giannakis

Electrical and Computer Engineering

Research output: Contribution to journal › Conference article › peer-review

48 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	1822-1826
Number of pages	5
Journal	Conference Record of the Asilomar Conference on Signals, Systems and Computers
Volume	2
State	Published - Dec 1 2002
Event	The Thirty-Sixth Asilomar Conference on Signals Systems and Computers - Pacific Groove, CA, United States Duration: Nov 3 2002 → Nov 6 2002

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abstract = "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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year = "2002",

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T1 - Low-complexity ICI suppression for OFDM over time- and frequency-selective Rayleigh fading channels

AU - Cai, Xiaodong

AU - Giannakis, Georgios B

PY - 2002/12/1

Y1 - 2002/12/1

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

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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 -

Low-complexity ICI suppression for OFDM over time- and frequency-selective Rayleigh fading channels

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