A Scheme of Secret Key Agreement Based on the Channel Characteristics in OFDM Land Mobile Radio

摘要

This paper deals with the scheme of secret key agreement based on the random fluctuation of channel characteristics and proposes the scheme based on the frequency response of channel, which is suitable for OFDM system. To evaluate the performance of the proposed scheme, computer simulation is carried out by using the systems model in accordance with the wireless LAN of IEEE802.11a. The computer simulation shows that the proposed scheme with various countermeasures for disagreement of key can achieve the secret key agreement without little errors at practical signal-to-noise ratio of 15dB.