Security enhancement and evaluation for noise aggregation over wireless fading channels

This paper studies the noise aggregation scheme with convolutional code in frequency-flat block-fading channel. While there is still a lot of limitation in the noise aggregation scheme, we combine the noise aggregation scheme with convolutional code for further study. By analysing the structure of its encoding system, we derives the optimal decoding algorithm in this scheme, and design three different decoding schemes. Considering the complexity and correctness of the decoding progress, we will adopt different decoding scheme in different situation. Due to the introduction of fading channel, the effect of the noise aggregation scheme has been increased significantly. In the meanwhile, we combine the noise aggregation scheme with adaptive modulation technology, the advantage of noise aggregation become more obvious. Simulation results show that the noise aggregation scheme can achieve a remarkable safety performance improvement and have good application prospects.