关键词：通信；水声通信；空时分组编码；压缩传感；信道估计
摘 要：In UWA (underwater acoustic) communications,data rate is severely limited by the confined bandwidth source of aquatic channel.MIMO (Multiple-input Multiple-output) techniques can drastically improve the spectral efficiency,and have been a new point of reference in UWA commutations.For the estimation of UWA channel which is usually sparse,CS (compress sensing) along with STBC (space-time block code) is adopted with improved results.A design of mixing coding MIMO-OFDM is also presented in the proposed method.The validity and the dependability of this scheme are verified by Monte Carlo simulations.