Blind Recognition of Non-Binary LDPC Codes Based on Ant Colony Optimization

This paper introduces a novel blind recognition of non-binary low-density parity-check (LDPC) codes without a candidate set, using ant colony optimization (ACO) algorithm over additive white Gaussian noise (AWGN) channels. Specifically, the scheme that effectively combines the ACO algorithm and the non-binary elements over finite fields is proposed. Furthermore, an improved, simplified elitist ACO algorithm based on soft decision reliability is introduced to recognize the parity-check matrix over noisy channels. Simulation results show that the recognition rate continuously increases with an increased signal-to-noise ratio (SNR) over the AWGN channel.