Search

Your search keyword '"Sun, Xixia"' showing total 27 results
Start Over Author "Sun, Xixia"
27 results on '"Sun, Xixia"'

17. Resource Allocation in Multi-User MIMO-OFDM Systems with Double-objective Optimization.

Author

Chen Yuqing, Li Xiaoyan, Sun Xixia, and Pan Su

Subjects
MIMO systems, RESOURCE allocation, ORTHOGONAL frequency division multiplexing, ENERGY consumption, MATHEMATICAL optimization, ALGORITHMS
Abstract

A resource allocation algorithm is proposed in this paper to simultaneously minimize the total system power consumption and maximize the system throughput for the downlink of multi-user multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) systems. With the Lagrange dual decomposition method, we transform the original problem to its convex dual problem and prove that the duality gap between the two problems is zero, which means the optimal solution of the original problem can be obtained by solving its dual problem. Then, we use convex optimization method to solve the dual problem and utilize bisection method to obtain the optimal dual variable. The numerical results show that the proposed algorithm is superior to traditional single-objective optimization method in both the system throughput and the system energy consumption. [ABSTRACT FROM AUTHOR]

Published
2018
Full Text
View/download PDF

26. Human-machine cooperation in unmanned aerial vehicle path planning based on cloud model

Author

Sun, Xixia and Cai, Chao

Abstract

A human-machine cooperative path planning model based on cloud model is proposed in this paper. The system enables the planner take part in the A* searching process and the cloud model integrates fuzziness with randomness of the qualitative concept. In the process of human-computer cooperation, the position of the leading field is figured out based on cloud model; it effectively guides the A* searching process and avoids the drawback of the algorithm. Experiment results demonstrated the validity and the feasibility of the model. It's much more efficient than either a human or a computer algorithm in the path planning tasks.

Published
2011
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results