Research Article
A Channel Estimation Scheme of Short Packets in Frequency Selective Channels
@INPROCEEDINGS{10.1007/978-3-031-04245-4_11, author={Chenguang He and Jianhui Zhang and Yu Wang and Shouming Wei}, title={A Channel Estimation Scheme of Short Packets in Frequency Selective Channels}, proceedings={6GN for Future Wireless Networks. 4th EAI International Conference, 6GN 2021, Huizhou, China, October 30--31, 2021, Proceedings}, proceedings_a={6GN}, year={2022}, month={5}, keywords={Multipath channels Channel estimation Short packets Virtual pilots}, doi={10.1007/978-3-031-04245-4_11} }- Chenguang He
Jianhui Zhang
Yu Wang
Shouming Wei
Year: 2022
A Channel Estimation Scheme of Short Packets in Frequency Selective Channels
6GN
Springer
DOI: 10.1007/978-3-031-04245-4_11
Abstract
In order to meet the needs of low delay in the IoT (Internet of Things) technology, short packets communication have recently attracted the attention of many researchers. In our scenario, the interference of multiple users cannot be ignored. Therefore, in order to overcome multi-user interference without affecting the efficiency of short packets transmission, we propose an efficient short packets receiving process for fast moving vehicles under a frequency-selective fading channel. During transmission, the obtained data are used to assist channel estimation. This method can also solve the problem of channel estimation quality degradation caused by a small number of pilots. Under the condition of high SNR, the performance of this scheme is improved significantly, which is close to perfect channel knowledge. Under the condition of low SNR, since the influence of the bit error rate of soft decision cannot be ignored, we adopt the scheme to eliminate multipath interference, which can effectively improve the estimation performance.
