一种改进的DFT信道估计算法
An Improved DFT-based Channel Estimation for Mobile Communication Systems
摘要：
信道估计是当前移动通信系统中最重要的部分之一。在信道估计的众多研究成果中，基于离散傅里叶变换（DFT）的信道估计由于其易于实现且在实际系统中具有良好的性能而受到广泛关注。在本文中，我们提出了一种改进的DFT为基础的信道估计方案，试图清洁的参考信号在时域之前被用于内插使用估计的噪声方差从多个正交频分复用（OFDM）符号上的参考信号通过DFT的属性。所提出的信道估计方案不需要任何先验信道信息。我们通过仿真和与传统信道估计方案的比较，在各种信道模型中验证了所提出的信道估计方案。
英文摘要：
Channel estimation is one of the most important parts in current mobile communication systems. Among the huge contributions in channel estimation studies, the discrete Fourier transform (DFT)-based channel estimation has attracted lots of interests since it can not only be easily implemented but also have acceptable performance in practical systems. In this paper, we propose an improved DFT-based channel estimation scheme that tries to clean the reference signals in the time domain before being used for interpolation using the estimated noise variance from reference signals on multiple orthogonal frequency division multiplexing (OFDM) symbols via the property of DFT. The proposed channel estimation scheme does not need any priori channel information. We validate the proposed channel estimation scheme in various channel models via simulations and comparison with conventional channel estimation schemes.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
