On Achieving Unconditional Secure Communications over Binary Symmetric Channels (BSC)

This paper investigates an unconditional communication model based on wiretap channel I. We will firstly review our previous study on build wiretap channel I in which the eavesdropper sees a binary symmetric channel (BSC) with error probability p while the main channel is error free. To make p as close to 0.5 as possible, the paper introduces a novel security code which helps turning the original system to achieve unconditional secure communications. Extensive simulation is conducted and the results verify our approach.