水声信道非线性均衡的研究

对浅海信道传输的声信号进行深入分析,在对判决反馈均衡(DFE)算法进行分析的基础上,对稀疏权DFE均衡器信道估计的均方误差(MSE)、信道的稀疏估计等进行了分析研究,并对信道进行了稀疏化估计,对全阶均衡器和稀疏权均衡器进行了仿真,证明对非线性均衡器结构进行稀疏化是可行的,降低了算法复杂性,并使由此造成的性能下降限定在一定的范围内。

Research on underwater acoustic channel nonlinear equalization

For the research of acoustic signal transmission in shallow-water channel, based on the analysis of decision feedback equalizer (DFE) arithmetic, the mean square error (MSE) of sparseness weight DFE equalizer channel estimation and channel sparseness estimation are researched. And the sparseness estimate, full rank equalizer and sparseness weight equalizer for channel are simulated, the simulated results show that it's feasible to make the structure of nonlinear equalizer sparse, it can reduce the complexity of arithmetic, and the performance descend which aroused by it can be limited in definite scope.