Abstract: Aiming at the problem of cognitive user package lost caused by primary user burst interference in cognitive Orthogonal Frequency Division Multiplexing(OFDM), an efficient anti-jamming piecewise coding scheme based on cognitive OFDM is proposed. The construction of piecewise coding is presented with low redundancy optimization method. Anti-jamming piecewise coding can recover the lost packets by implementing different number of parity check blocks, thus it can protect Secondary Users(SU) from Primary Users(PU) by burst interference avoiding. Simulation results prove that by non-uniform sub-channel selection, anti-jamming piecewise coding with smaller overhead provides better Frame Error Rate(FER) and throughput performance than anti-jamming rateless coding in low jamming rate region.
cognitive Orthogonal Frequency Division Multiplexing(OFDM),
anti-jamming piecewise coding,
non-uniform sub-channel selection,
Frame Error Rate(FER),