Reliable wireless error correction technique for secure image transmission

Abstract

Robust and secure transmission strategy for high-quality image through wireless networks is considered a great challenge. However, majority of encrypted image transmission schemes do not consider well the effect of bit errors occurring during transmission and this issue is considered a problem that should be handled by an efficient coding scheme. In this paper, a modified wireless image transmission scheme that combines chaotic encryption and turbo coding technique into one processing step is proposed. In the proposed scheme, selective encryption algorithm based on two-dimensional chaotic map is utilized for data security. Furthermore, error correction technique based on turbo coding is employed as channel coding for data communication in order to solve the problem of limited bandwidth and throughput. Simulation results show that the proposed scheme achieves high degree of robustness against channel impairments and improve image quality with acceptable data rates.