Low-Complexity Index Assignments for Secure Quantization
Almeida, J.A.
; Maierbacher , G.
;
Barros, J.
Low-Complexity Index Assignments for Secure Quantization, Proc Conf. on Information Sciences and Systems - CISS, Baltimore, United States, Vol. I, pp. 930 - 934, March, 2009.
Digital Object Identifier:
Abstract
Focusing on the design of scalar quantizers for secure communication in a wiretap environment we propose a low-complexity encoding method that minimizes the end-to-end distortion between legitimate terminals while maximizing the distortion at the eavesdropping receiver. The key idea is to generate confusion by means of randomized index assignments. A simple iterative optimization scheme is shown to yield low distortion mappings with noticeable privacy benefits.
