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The performance of concatenated coding OFDM system in Intra-Flight Data Link

According to the system requirements, the multicarrier OFDM transmission scheme was proposed in Intra-Flight Data Link (IFDL) physical layer. Considering the anti-jamming vulnerability, the reliabilities of OFDM system were quantitatively analyzed under several burst interference. Combined with the convolution interleaving, (255,223)RS—(2,1,7) convolution concatenated coding that was proposed originally by NASA was applied in OFDM system to improve the performance of error correction. The simulation results show that, under certain Bit Error Rate (BER) the concatenated coding OFDM system could achieve effective coding gains in typical IFDL channel environments.