Title :
Joint Channel and Phase Noise Compensation for OFDM in Fast-Fading Multipath Applications
Author :
Corvaja, Roberto ; Armada, Ana García
Author_Institution :
Dept. of Inf. Eng., Univ. of Padova, Padova
Abstract :
Orthogonal frequency-division multiplexing (OFDM) systems, such as the new wireless standards or the schemes proposed for third-generation (3G) evolution, exhibit great sensitivity to the effects of phase noise and the time-varying propagation channel, which can introduce interchannel interference (ICI) due to the loss of orthogonality among subcarriers. In this paper, joint channel estimation and ICI reduction schemes are investigated, which compensate the effects of phase noise and multipath channel in a realistic scenario, where the channel is not assumed perfectly known, whereas its estimation is obtained by combining a decision-feedback scheme and a pilot-aided estimator. We propose a technique for ICI compensation that has reduced complexity by only considering the most significant terms of ICI.
Keywords :
3G mobile communication; OFDM modulation; adjacent channel interference; channel estimation; fading channels; multipath channels; phase noise; ICI; OFDM systems; Third-Generation Partnership Project; decision-feedback scheme; fast-fading multipath channels; interchannel interference; joint channel estimation; orthogonal frequency-division multiplexing; phase noise compensation; pilot-aided estimator; third-generation evolution; time-varying propagation channel; Channel estimation; OFDM systems; channel estimation; inter-channel interference; interchannel interference (ICI); orthogonal frequency-division multiplexing (OFDM) systems; phase noise;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2008.927719
