... orthogonal element 正交元素 orthogonal estimate 正交估计（量） orthogonal expansion 正交展开 ...
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本文研究了自适应正交多载波频分复用（AOFDM）中根据估计出的信道特性选择调制方式的问题。
The problem of how to choose the constellation size based on the estimated channel qualities in AOFDM systems is addressed in this paper.
该文提出了一种新的信道估计算法，用于无线移动信道下的正交频分复用系统。
This paper proposes a novel channel estimation method for wireless Orthogonal Frequency Division Multiplexing systems.
采用的新模型与算法有：零阻抗支路处理、正交化算法和量测误差估计等。
Some new models and algorithms are used, they are: zero impedance branch, orthogonal transformations, and measurement error estimation etc.
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