Low-Complexity Index Assignments for Secure Quantization
- Almeida, J.A.; G. Maierbacher ; Barros, J.;
"Low-Complexity Index Assignments for Secure Quantization
Conf. on Information Sciences and Systems - CISS
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.