多径信道下基于dft的GFDM信道估计

2018 10th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2018-07-01 DOI:10.1109/ICITEED.2018.8534919

Al Kautsar Permana, Effrina Yanti Hamid

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引用次数: 2

摘要

将基于dft的信道估计方法应用于广义频分复用(GFDM)系统。为了实现这种方法，需要知道最大通道脉冲响应。通过消除信道脉冲响应部分外的干扰和噪声，可以得到改进的估计。最小二乘信道估计需要导频符号的辅助。获得LS信道估计后，执行基于dft的算法。结果表明，与LS估计相比，采用dft信道估计在低信噪比下均方误差(MSE)的性能得到了显著提高，同时基于dft信道估计的SER也得到了有价值的改善。

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DFT-Based Channel Estimation for GFDM on Multipath Channels

The DFT-based channel estimation is proposed to be applied for generalized frequency division multiplexing (GFDM) system. In order to implement this method, maximum channel impulse response needs to be known. By eliminating the interference and noise outside of the channel impulse response parts, improvement in the estimation can be obtained. The aid of pilot symbols is needed to operate the least square (LS) channel estimation. Once the LS channel estimation is obtained, the DFT-based algorithm is performed. The results show that by employing the DFT-based channel estimation, the performance of mean square error (MSE) improves significantly at low SNR$\sim 10$ dB compared to the LS estimation, while at the same time the SER of DFT-Based channel estimation also gives valuableimprovement.

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2018 10th International Conference on Information Technology and Electrical Engineering (ICITEE)

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