Physical Layer Authentication Analysis Based on Correlative Sequence and Channel Coding

Abstract

In this paper, the physical layer authentication problem is analyzed theoretically with typical set and channel coding techniques. The wireless channels have characters of reciprocity and uniqueness. High correlation advantage of both sides can be used for authentication. Firstly, the sequences SAlice and SBob are quantized by estimating the channel. The two sequences are highly correlated, but not identical. And they are naturally confidential to Eve. An authentication framework based on correlative sequences and channel coding is proposed. The attack behavior that Eve may adopt is classified. And the upper and lower bounds of Eve’s attack capability are analyzed. Through theoretical analysis, it is found that the upper and lower bounds of the success rate of attack tend to be consistent when the codeword length tends to infinity.