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Optimal correlating transform for erasure channels

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3 Author(s)
Romano, G. ; Dipt. di Ingegneria dell''Informazione, Seconda Univ. di Napoli, Aversa, Italy ; Salvo Rossi, P. ; Palmieri, F.

In this letter, we derive a gradient-based algorithm for computing the optimal transform when coefficients are transmitted over an erasure channel whose statistics are known. The discrete transform introduces correlation among the coefficients with consequent performance improvement against losses. Simulations show appreciable improvements over standard schemes and also good robustness when loss probabilities are only roughly estimated.

Published in:

Signal Processing Letters, IEEE  (Volume:12 ,  Issue: 10 )