公开(公告)号：US20240168721A1

公开(公告)日：2024-05-23

申请号：US18403575

申请日：2024-01-03

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Bo XU ,  Libing Bai ,  Xiaowei Luo ,  Jia Zhao ,  Yuhua Cheng ,  Hang Geng ,  Kai Chen ,  Yifan Wang ,  Gen Qiu

IPC: G06F7/58

CPC classification number: G06F7/582

Abstract: A random transient power test signal generator based on three-dimensional memristive discrete map, which utilizes a three-dimensional parallel bi-memristor Logistic map module to generate two pseudo-random sequences, and based on the sequences, uses two waveform output modules to generate transient voltage and transient current signals respectively, thus the random transient power testing signal is obtained. The map can significantly improve the complexity of chaos and greatly extend its range of chaos. In addition, a performance evaluation shows the map has more robust hyperchaotic behavior in much larger chaos range. Moreover, the random sequences generated by the map module combines with DDS, which can generate a transient power signal with completely random period, starting phase and ending phase. Thus, a stimulated output of the high-precision transient power testing signal with random characteristic is realized, which makes the development and calibration of high-precision measurement of power meters more convenient.

公开(公告)号：US10349400B2

公开(公告)日：2019-07-09

申请号：US15836947

申请日：2017-12-11

Applicant: University of Electronic Science and Technology of China

Inventor： Xuesong Tan ,  Jieran Wang ,  Yifan Wang

IPC: H04W72/04 ,  H04B1/40

Abstract: This invention relates to the field of communication technology, and particularly to a communication exchange mechanism design based on frequency hopping, which is applicable to cognitive radio networks. A method for generating hopping frequency sequences for multi-transceiver cognitive radio networks is provided, so as to realize the optimization and tradeoff of the five performance parameters, i.e. DoR, MTTR, ATTR, CL, and NSS. That, is, for a given DoR, the frequency-hopping system should minimize the NSS of the clock synchronous and asynchronous frequency-hopping systems under the condition of MTTR=ATTR=1 and CL