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中文摘要：
论述了水声通信单载波频域均衡（SC-FDE）的基本原理、系统框架以及在SC-FDE系统中所采用的基于导频的最小平方（LS）信道估计方法。针对水声通信信道的特点，分别对SC-FDE和OFDM在相同多径效应和多普勒频移条件下的性能进行了分析，结果表明：在较高信噪比条件下，SC-FDE可比OFDM更有效地对抗多径和多普勒频移的影响。此外，SC-FDE还能克服OFDM存在的峰平功率比（PAR）过大的问题。该技术在水声通信中有良好的应用前景。
英文摘要：
The basic principle and configuration of single carrier system with frequency domain equalizer （SC-FDE） are discussed. A channel estimator based on pilot and least square （LS） used in SC-FDE is described. Considering the characteristics of underwater acoustic channel, the performance of SC-FDE system and OFDM system are compared in the same condition of multi-path propagation and Doppler frequency-shift. The results show that when signal noise ratio is high,the performance of SC-FDE is better than that of OFDM to reduce the effect of multi-path propagation and Doppler frequency-shift. Furthermore, SC-FDE can overcome the problem of higher peak-to-average ratio （PAR） which exists in OFDM. SC-FDE is a promising technique used in underwater acoustic communications.
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同项目期刊论文
An Adaptive Differentially Coherent Detection and Phase Compensation Algorithm in Underwater Acousti
Real-time Parallel Processing System Design and Implementation for Underwater Acoustic Communication
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