Improved Algorithm Based on DFT Noise Reduction for LTE Downlink Channel Estimation
Xue Song Zhao · Video Engineering · 2013
According to the requirements of the LTE downlink system,the applicability of the conventional channel estimation algorithm is analyzed.In order to improve the DFT algorithm,aiming at the drawbacks that the spectrum of non-integer multiple of the delay channel leakage and noise within the cyclic prefix can not be removed,the windowed function and the threshold are set.Using MATLAB for algorithm simulation and analysis,the results show that the improved algorithm improves the accuracy of data transmission system without increasing the complexity of the premise.It is more suitable for LTE systems and improves the performance of the entire system.