Coarse symbol synchronization algorithms for OFDM systems in multipath channels
Coarse symbol synchronization algorithms for OFDM systems in multipath channels
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DOI：
10.1109/lcomm.2002.804247
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发表时间：
2002-12
期刊：
影响因子：
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通讯作者：
Donghoon Lee;K. Cheun
中科院分区：
文献类型：
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作者：
Donghoon Lee;K. Cheun
提出了一种多径信道下OFDM系统的最大似然粗同步算法。几个简化的假设减少了相当不切实际的ML算法更实际的形式的最小均方误差和最大相关算法。所有的衍生算法利用循环前缀，因此不需要一个已知的训练序列。通过估计第一到达路径的位置，该算法允许最大限度地利用保护间隔，从而最大限度地减少符号间干扰。
A maximum-likelihood (ML) coarse symbol synchronization algorithm for OFDM systems in multipath channels is derived. Several simplifying assumptions reduce the rather impractical ML algorithm to more practical forms of minimum mean-squared-error and maximum correlation algorithms. All of the derived algorithms exploit the cyclic prefix and thus do not require a known training sequence. Estimating the position of the first arriving path, the algorithms allow maximum utilization of the guard interval thus minimizing intersymbol interference.