基于复指数展开的OFDM系统盲信道幅频响应估计

International Conference on Neural Networks and Signal Processing, 2003. Proceedings of the 2003 Pub Date : 1900-01-01 DOI:10.1109/ICNNSP.2003.1281136

Xiaodong Xie, X. Dai

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引用次数: 0

摘要

本文提出了一种新的用于正交频分复用(OFDM)的盲信道幅频响应估计方法。在利用接收信号的频域二阶瞬时矩的基础上，引入复指数展开算法，实现了少参数信道幅度的识别。通过整个算法，只涉及少量的计算量。因此，该算法可以连续跟踪信道APR，适合实际应用。通过仿真对该算法进行了验证，并与其他方法进行了比较。

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Complex exponential expansion based blind channel amplitude frequency response estimation for OFDM systems

In this paper, we present a new blind channel amplitude frequency response (APR) estimation method for orthogonal frequency division multiplexing (OFDM). After exploiting the second order instantaneous moment of the received signals in frequency domain, the proposed complex exponential expansion algorithm is introduced to identify the channel amplitude with few parameters. Through the whole algorithm, only a small amount of computation is involved. Therefore, the algorithms can track the channel APR continuously and are amenable to real applications. The algorithm is tested with simulations and also compared with, other method.

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International Conference on Neural Networks and Signal Processing, 2003. Proceedings of the 2003

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