Research Article
Iterative Phase Error Compensation Joint Channel Estimation in OFDM Systems
@INPROCEEDINGS{10.1007/978-3-030-41117-6_6, author={Qian Li and Hang Long and Mingwei Tang}, title={Iterative Phase Error Compensation Joint Channel Estimation in OFDM Systems}, proceedings={Communications and Networking. 14th EAI International Conference, ChinaCom 2019, Shanghai, China, November 29 -- December 1, 2019, Proceedings, Part II}, proceedings_a={CHINACOM PART 2}, year={2020}, month={2}, keywords={Phase noise CPE compensation Channel estimation}, doi={10.1007/978-3-030-41117-6_6} }- Qian Li
Hang Long
Mingwei Tang
Year: 2020
Iterative Phase Error Compensation Joint Channel Estimation in OFDM Systems
CHINACOM PART 2
Springer
DOI: 10.1007/978-3-030-41117-6_6
Abstract
Orthogonal frequency division multiplexing (OFDM) system is very sensitive to the phase noise especially in high frequency since the orthogonality between sub-carriers is easily destroyed. It is very important to estimate and compensate the phase noise in the research of 5G systems. The influence of phase noise on OFDM systems is manifested in two aspects: introducing common phase error (CPE) and causing inter-carrier interference (ICI). In this paper, we propose a new joint channel and CPE estimation algorithm to obtain more accurate channel and CPE estimates through iterations. In each iteration, we update the channel and CPE estimates to make them closer to the true value. Besides, the performance improvement brought by the algorithm under the simplified system model is analyzed. Simulation results show that this algorithm has a great impact on improving the accuracy of channel and CPE estimation.
