Symbol by symbol Doppler rate estimation for highly mobile underwater OFDM
Proceedings of the Fourth ACM International Workshop on UnderWater Networks
IEEE Transactions on Signal Processing
Iterative sparse channel estimation and decoding for underwater MIMO-OFDM
EURASIP Journal on Advances in Signal Processing - Special issue on advanced equalization techniques for wireless communications
Performance comparison of doppler scale estimation methods for underwater acoustic OFDM
Journal of Electrical and Computer Engineering - Special issue on Underwater Communications and Networking
Optimal Bayesian resampling for OFDM signaling over multi-scale multi-lag channels
Proceedings of the Seventh ACM International Conference on Underwater Networks and Systems
Hybrid time-frequency domain equalization for single-carrier underwater acoustic communications
Proceedings of the Seventh ACM International Conference on Underwater Networks and Systems
Joint DFE with LDPC decoding for anti-multipath over underwater acoustic channels
Proceedings of the Eighth ACM International Conference on Underwater Networks and Systems
Effective self-cancellation of intercarrier interference for OFDM underwater acoustic communications
Proceedings of the Eighth ACM International Conference on Underwater Networks and Systems
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This paper presents a practical low-density parity-check (LDPC) coded OFDM system designed for the underwater acoustic channel with its attendant sparse multipath channel and Doppler effects. The carrier frequency offset (CFO) and channel state information (CSI) are assumed unavailable to both to the transmitter and the receiver. Several different receiver structures are considered, all of which perform CFO/channel estimation, detection and decoding in an iterative manner. The convergence behavior of the iterative receivers and their asymptotic performance are evaluated using the extrinsic information transfer (EXIT) chart method. OFDM receiver performance is further evaluated through simulations and field tests in shallow water.