Please use this identifier to cite or link to this item: http://hdl.handle.net/11144/3735
Title: Turbo Equalization with Cancelation of Nonlinear Distortion for CP-Assisted and Zero-Padded MC-CDM Schemes
Authors: Dinis, Rui
Silva, Paulo
Araújo, Teresa
Keywords: MC-CDM
Zero-padded MC-CDM
Turbo equalization
Nonlinear distortion
Issue Date: Aug-2009
Publisher: IEEE
Citation: R. Dinis, P. Silva, T. Araújo, Turbo Equalization with Cancelation of Nonlinear Distortion for CP-Assisted and Zero-Padded MC-CDM Schemes, IEEE Trans. on Communications, Vol. 57, No. 7, pp. 2185 - 2189, August, 200
Abstract: In this paper, we consider MC-CDM schemes (MultiCarrier Code Division Multiplexing) where clipping techniques are employed to reduce the envelope fluctuations of the transmitted signals. Both CP-assisted (Cyclic Prefix) and ZP (Zero- Padded) MC-CDM schemes are studied. We develop frequencydomain turbo equalizers combined with an iterative estimation and cancelation of nonlinear distortion effects, with relatively low complexity since they allow FFT-based (Fast Fourier Transform), frequency-domain implementations. Our performance results show that the proposed receivers allow significant performance improvements at low and moderate SNR (Signal-to-Noise Ratio), even when strongly nonlinear transmitters are employed. The receiver for ZP MC-CDM is of special interest for systems where the duration of the channel impulse response is not a small fraction of the duration of the MC-CDM blocks, being suitable to MC-CDM systems with very large blocks (hundreds or even thousands of subcarriers), since they do not require the inversion nor the multiplication of large matrixes
Peer reviewed: yes
URI: http://hdl.handle.net/11144/3735
metadata.dc.identifier.doi: 10.1109/VETECF.2007.255
ISSN: 0090-6778
Publisher version: https://ieeexplore.ieee.org/document/5201002/
Appears in Collections:DCT - Artigos/Papers

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