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Low complexity channel error mitigation for distributed speech recognition over wireless channels

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3 Author(s)
V. Sanchez ; Dept. de Electron. y Tecnologia de Computadores, Granada Univ., Spain ; A. M. Peinado ; J. L. Perez-Cordoba

Distributed speech recognition (DSR) has been recently proposed as an efficient way of translating automatic speech recognition technologies to mobile and IP network application. In this paper we propose a channel error mitigation technique with a low computational complexity that improves the mitigation technique proposed in the ETSI standard for DSR (ETSI-ES-201-108 v1.12) for bad channel conditions. We also study the influence of the vector quantization index assignment on the proposed mitigation technique and design a new index assignment that gets some improvement on the proposed technique.

Published in:

Communications, 2003. ICC '03. IEEE International Conference on  (Volume:5 )

Date of Conference:

11-15 May 2003