Non Uniform Power Allocation Pilot Tone Jamming in OFDM Systems

Abstract

The Orthogonal Frequency Division Multiplexing (OFDM) is widely used in the wireless communication systems. The robustness in a wireless environment combined with the ease to perform the channel estimation (CE) are the reasons for the OFDM popularity. Commonly, the channel estimation(CE) is performed in frequency domain using pilot tones. It is known that the wireless communications may be affected by unknown interference from adversaries such as radio jamming (RJ), which can lead to degradation of performances. This work is focused on the RJ on OFDM modulations. We propose a new RJ strategy, called Non Uniform Power Allocation Pilot Tones Jamming (PTJ), and show, through analysis and Monte-Carlo simulations, that it presents improved performances with respect to other existing conventional RJ attack, such as barrage jamming (BJ) and PTJ, known in the open literature.