Research Article
Initial Phrase Blind Estimation of Co-channel Time-Frequency Overlapped Signals
@INPROCEEDINGS{10.1007/978-3-031-04245-4_42, author={Mingqian Liu and Zhenju Zhang and Shuo Chen}, title={Initial Phrase Blind Estimation of Co-channel Time-Frequency Overlapped Signals}, 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={Co-channel signal Cyclic spectrum Forth-order cyclic cumulants Initial phrase estimation Time-frequency overlapped signal}, doi={10.1007/978-3-031-04245-4_42} }- Mingqian Liu
Zhenju Zhang
Shuo Chen
Year: 2022
Initial Phrase Blind Estimation of Co-channel Time-Frequency Overlapped Signals
6GN
Springer
DOI: 10.1007/978-3-031-04245-4_42
Abstract
In order to successfully implement blind demodulation of the received signal, it is necessary to make a comprehensive and accurate estimation of the parameters of the received signal. Therefore, parameter estimation of communication signals is an indispensable key technology in underlay cognitive networks. This paper focuses on the initial phase estimation method of time-frequency overlapped signals and the initial phrase blind estimation method based on four-order cyclic cumulants is proposed. In this paper, the four-order cyclic cumulants is computed firstly, then the test statistics are constructed by the ratio of four-order cyclic cumulants in specific frequency and specific cycle frequency. Finally, and the initial phrase of signal component are estimated based on the test statistics. Simulation results show that the proposed method achieves initial phrase estimation of time-frequency overlapped signals effectively and the performance is better.
