Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;
University of Chinese Academy of Sciences,Beijing 100049,China;
Beijing Engineering Technology Research Center of Ocean Acoustic Equipment,Beijing 100190,China;
State Key Laboratory of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;
high order quadrature amplitude modulation; probabilistic constellation shaping; UWA multipath channel; turbo equalization;