Date Added: May 2012
This paper explores effects of pilot based jamming attacks with synchronization mismatches on MIMO-OFDM systems. Both MIMO and OFDM based systems employ known data called pilot tones to estimate the channel frequency response and perform equalization. Jamming pilot tones can potentially disrupt the channel estimation and equalization, thus making the communication impossible. The authors' earlier research focused on efficient jamming algorithms, such as pilot jamming for OFDM systems and singularity attack for MIMO systems. It has been shown that pilot based jamming is more efficient than broadband attacks on entire signal. However, pilot based jamming may suffer from time and frequency synchronization mismatches that can degrade the efficacy of attacks.