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Adaptive linear equalizer, whose coefficients are designed to be adjustable to the channel impulse response, has emerged as a simple and efficient technique to adaptively compensate for the channel fading. However, conventional adaptive linear equalizers suffer from performance degradation and slow convergence in the underwater acoustic channel with large delay spread. To solve this problem, in this...
In this paper, the turbo principle is applied to the existing least symbols error rate(LSER) decision feedback equalization(DFE) for underwater channel. The performance of the DFE adaptive algorithms are aided by soft information delivered from the channel decoder. We introduce a variable step size scheme that takes soft information into account to get the more suitable step size which can reduce...
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