CAJ | 학술논문

水声高速相干通信中使用自适应均衡对抗信道在接收信号中产生的码间串扰.目前,1/2分数间隔采样的判决反馈均衡器结构得到了广泛的应用.本文分析了几种自适应算法在此种均衡器结构下的性能,结合浅海水声信道的特点,提出了一种快速卡尔曼滤波和快速自优化最小均方的混合算法,模拟及海试结果表明,该混合算法在计算复杂度、收敛速度以及稳定性方面都有很好的性能,已经应用到了水声实时高速通信系统当中.
수성고속상간통신중사용자괄응균형대항신도재접수신호중산생적마간천우.목전,1/2분수간격채양적판결반궤균형기결구득도료엄범적응용.본문분석료궤충자괄응산법재차충균형기결구하적성능,결합천해수성신도적특점,제출료일충쾌속잡이만려파화쾌속자우화최소균방적혼합산법,모의급해시결과표명,해혼합산법재계산복잡도、수렴속도이급은정성방면도유흔호적성능,이경응용도료수성실시고속통신계통당중.
Equalizer is used to cancel the intersymbol interference (ISI) caused by time-varying multipath in underwater acoustic communication channel. At present the equalizer structure of decision feedback equalizers (DFE) embed with digital phase locked loop (DPLL) is popular. We analyze several kinds of adaptive algorithm's efficiencies and propose an algorithm combining the Fast Kalman and the fast self-optimized LMS (FOLMS), witch has good ability in convergence speed, computational complexity and stability. Both simulation and sea experiment results are proposed.