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Semi-blind combined detection and turbo decoding for unknown block fading channels

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2 Author(s)
R. D. Souza ; CEFET/PR, Curitiba, Brazil ; J. Garcia-Frias

We present a semi-blind approach to combined detection and turbo decoding for unknown ISI channels. The proposed method utilizes very few training symbols and minimizes the probability of ill-convergence characteristic of full-blind approaches. The suitability of the proposed semi-blind scheme for a delay constrained wireless communication system, where the ISI channel is modeled as a frequency selective block fading channel, is investigated. Simulation results show that, even considering short frame lengths, the semi-blind scheme presents good performance over such slowly time-varying environments.

Published in:

2005 IEEE 61st Vehicular Technology Conference  (Volume:3 )

Date of Conference:

30 May-1 June 2005