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基于模糊神经网络盲均衡算法的研究
摘要
无线和数字通信系统中，由于信号在传输过程中会受到复杂传播机制
的影响，从而产生码间干扰。为了消除码间干扰，要在接收端进行均衡，
以补偿信道特性，正确恢复发送序列。传统的均衡器由于需要不断地发送
训练序列，已经不能满足数字通信技术发展的要求。盲均衡技术不需要训
练序列，仅利用接收序列的统计特性便能自适应地调节参数，也就是说，
盲均衡技术本身完全不用训练序列，就可以自启动收敛并防止失锁情况，
且能使滤波器的输出与要恢复的输入信号相近。盲均衡技术有效克服了传
t
统均衡器的缺点，对于信道的经常性衰落、严重的非线性及时变特性、多
径传播等的影响，以及接收机无法跟踪上信道特性而出现的通信中断，盲
均衡器会自动调整参数，跟踪信道特性，完成对信号的最佳估计。目前己
在通信、雷达，地震勘探，图像处理等领域中得到应用。-THE RESEARCH OF BLIND
EQUALIZATION
ALGoRITHM BASED oN
THE FUZZY NEURAL NETWORK
AB STRACT
摘要
无线和数字通信系统中，由于信号在传输过程中会受到复杂传播机制
的影响，从而产生码间干扰。为了消除码间干扰，要在接收端进行均衡，
以补偿信道特性，正确恢复发送序列。传统的均衡器由于需要不断地发送
训练序列，已经不能满足数字通信技术发展的要求。盲均衡技术不需要训
练序列，仅利用接收序列的统计特性便能自适应地调节参数，也就是说，
盲均衡技术本身完全不用训练序列，就可以自启动收敛并防止失锁情况，
且能使滤波器的输出与要恢复的输入信号相近。盲均衡技术有效克服了传
t
统均衡器的缺点，对于信道的经常性衰落、严重的非线性及时变特性、多
径传播等的影响，以及接收机无法跟踪上信道特性而出现的通信中断，盲
均衡器会自动调整参数，跟踪信道特性，完成对信号的最佳估计。目前己
在通信、雷达，地震勘探，图像处理等领域中得到应用。-THE RESEARCH OF BLIND
EQUALIZATION
ALGoRITHM BASED oN
THE FUZZY NEURAL NETWORK
AB STRACT
相关搜索： 盲均衡
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