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Low complexity equalization of HCM systems with DPFFT demodulation over doubly-selective channels

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Li, Y., Sha, X., Zheng, F.-C. and Wang, K. (2014) Low complexity equalization of HCM systems with DPFFT demodulation over doubly-selective channels. IEEE Signal Processing Letters, 21 (7). pp. 862-865. ISSN 1070-9908

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To link to this item DOI: 10.1109/LSP.2014.2311128

Abstract/Summary

To mitigate the inter-carrier interference (ICI) of doubly-selective (DS) fading channels, we consider a hybrid carrier modulation (HCM) system employing the discrete partial fast Fourier transform (DPFFT) demodulation and the banded minimum mean square error (MMSE) equalization in this letter. We first provide the discrete form of partial FFT demodulation, then apply the banded MMSE equalization to suppress the residual interference at the receiver. The proposed algorithm has been demonstrated, via numerical simulations, to be its superior over the single carrier modulation (SCM) system and circularly prefixed orthogonal frequency division multiplexing (OFDM) system over a typical DS channel. Moreover, it represents a good trade-off between computational complexity and performance.

Item Type:Article
Refereed:Yes
Divisions:Science
ID Code:39826
Uncontrolled Keywords:Banded minimum mean square error (MMSE) equalization discrete partial fast Fourier transform (DPFFT) doubly-selective (DS) fading channel hybrid carrier modulation (HCM) system
Publisher:IEEE
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