Enhanced MIMO Based Anti-Jamming Technique in Wireless Networks

MIMO-OFDM (Multiple Input Multiple Output - Orthogonal Frequency Division Multiplexing) system has been recognized as one of the most popular and competitive technique in a wireless environment nowadays. The multicarrier modulation is employed, which gives advantages like inter symbol interference (ISI) reduction, high data rate, higher reliability, and better performance in multipath fading. The simulation results show that, the BER (Bit Error Rate) performances is better in LML (Linear maximum likelihood) equalizer. Further we analyzed in different fading channels for various modulation techniques in both the equalizers.  The LML (Linear maximum likelihood) equalizer plays important role in anti jamming OFDM (Orthogonal Frequency Division Multiplexing) technology. Reactive jamming is considered the most powerful jamming attack as the attack efficiency is maximized while the risk of being detected is minimized. No effective anti-jamming solutions to secure OFDM (Orthogonal Frequency Division Multiplexing) wireless communications under reactive jamming attack. In this paper, Explore the use of MIMO (Multiple Input Multiple Output) technology for jamming resilient OFDM (Orthogonal Frequency Division Multiplexing) communication, especially its capability to communicate against the powerful reactive jammer. MIMO (Multiple Input Multiple Output) based anti-jamming scheme that exploits interference cancellation and transmit pre-coding capabilities of MIMO (Multiple Input Multiple Output) technology to turn a jammed non-connectivity scenario into an operational network.