数学的实践与认识
數學的實踐與認識
수학적실천여인식
MATHEMATICS IN PRACTICE AND THEORY
2009年
23期
123-128
,共6页
盲均衡%模糊神经网络%变步长%控制器
盲均衡%模糊神經網絡%變步長%控製器
맹균형%모호신경망락%변보장%공제기
blind equalization%fuzzy neural network%variable step-size%controller
盲均衡技术能消除码问干扰.补偿信道特性,正确恢复发送序列,是无线通信系统中的关键技术.分析了G0darid算法中迭代步长对盲均衡算法收敛性能的影响,利用模糊神经网络的控制功能,提出一种新的利用模糊神经网络控制步长的Godard盲均衡算法.计算机仿真验证了其有效性.
盲均衡技術能消除碼問榦擾.補償信道特性,正確恢複髮送序列,是無線通信繫統中的關鍵技術.分析瞭G0darid算法中迭代步長對盲均衡算法收斂性能的影響,利用模糊神經網絡的控製功能,提齣一種新的利用模糊神經網絡控製步長的Godard盲均衡算法.計算機倣真驗證瞭其有效性.
맹균형기술능소제마문간우.보상신도특성,정학회복발송서렬,시무선통신계통중적관건기술.분석료G0darid산법중질대보장대맹균형산법수렴성능적영향,이용모호신경망락적공제공능,제출일충신적이용모호신경망락공제보장적Godard맹균형산법.계산궤방진험증료기유효성.
The blind equalization technology can reduce Intersymbol Interference (ISI), compensate the channel's characteristic and renew transmitting signals accurately ,so it becomes the key technique in the wireless communication system. The step-size of Godard algorithm can affect the convergence result. In this paper, a new Godard blind equalization algorithm based on the fuzzy neural network (FNN) controlling step-size is proposed, and it using the control functions to improve the control precision of step-size. The capability of the new algorithm is proved by computer simulation.
