Chaotic circle map interleaver for OFDM

This paper presents an effective interleaver structure which uses the chaotic circle map to generate scrambled uncorrelated randomized data. The chaotic interleaver improves the performance of error correcting codes under short bursts error due to channel effects. The information is interleaved after the Orthogonal Frequency Division Multiplexing (OFDM) modulation block. The contribution of the proposed technique is better randomization with minimal information requirement between transmitter and receiver for de-interleaving. The performance improvement of the proposed approach is compared in terms of the bit error rate and Field Programmable Gate Array (FPGA) implementation resource utilization.