Wenxuan Chen Jun Tao 0004 Ming Jiang 0021 Channel Estimation for OFDM Underwater Acoustic Communications via Orthogonal Approximate Message Passing. 1-5 2022 ICSPCC https://doi.org/10.1109/ICSPCC55723.2022.9984369 conf/icspcc/2022 db/conf/icspcc/icspcc2022.html#ChenTJ22