Analysis of Jamming Attacks on a Hopped OFDM Communication System

Abstract

Orthogonal frequency division multiplexing (OFDM) was considered to be a well-known robust method and a utilizing hopping method across various frequency bands or sub-bands that is known for its capability to enhance the performance of these communication systems. The combination between both of these techniques should be useful in mitigating interference especially the jamming that is caused accidentally or on purpose mainly in the military applications. This paper illustrates that the bit error rate (BER) performances of an improved OFDM communication system utilizing several frequency sub-bands hopping techniques against different categories of jammers are presented. In case of low jamming power at the front end of the receiver, the system performance is enhanced gradually by raising the number of frequency hopping sub-bands against narrowband, wideband and barrage jammers. At a high jamming power, no improvement is achieved using the sub-bands hopping methods.