no code implementations • 21 Jul 2021 • Changzhi Xu, Jingya Ren, Wanxin Yu, Yi Jin, Zhenxin Cao, Xiaogang Wu, Weiheng Jiang
Considering the possibility of presence multiple interferences in the frequency hopping system, in order to fully extract effective features of the interferences from the received signals, the linear and bilinear transform based composite time-frequency analysis method is adopted.
no code implementations • 2 Feb 2021 • Weiheng Jiang, Yu Zhang, Jun Zhao, Zehui Xiong, Zhiguo Ding
Cognitive radio (CR) is an effective solution to improve the spectral efficiency (SE) of wireless communications by allowing the secondary users (SUs) to share spectrum with primary users (PUs).
Information Theory Signal Processing Information Theory
no code implementations • 1 Apr 2020 • Weiheng Jiang, Xiaogang Wu, Bolin Chen, Wenjiang Feng, Yi Jin
Hence, in this paper, to resolve the problem of blind modulation classification in MIMO systems, the time-frequency analysis method based on the windowed short-time Fourier transform is used to analyse the time-frequency characteristics of time-domain modulated signals.
no code implementations • 14 Aug 2019 • Weiheng Jiang, Xiaogang Wu, Yi Gong, Wanxin Yu, Xinhui Zhong
The main idea is that, we use fruit fly optimization algorithm to select smoothing parameters for Holt-Winters exponential smoothing method.