Efficient CRC Error Correction using List Decoders for CPM-Modulated IoT Frames

This paper deals with cyclic redundancy check (CRC) decoding when used in the context of non forward error correction (FEC)-encoded IoT systems: CRC decoding remains challenging when combined to continuous phase modulation (CPM). In this paper, a proposed algorithm relying on the candidate diversity principle through a candidate list generation from soft CPM demodulation output combined with CPM-tailored syndrome decoding is evaluated. Applied with Bahl Cocke Jelinek Raviv (BCJR) algorithm for Gaussian minimum shift keying (GMSK) demodulation, it outperforms all existing complexity-affordable methods and performs close to the best evaluated Parallel-List Viterbi Algorithm with usual CRC validation.