Earticle

초록

영어

In this paper, we study the relay-based communication schemes for cooperative spectrum sharing among multiple primary users (PUs) and multiple secondary users (SUs) with incomplete information. Inspired by contract theory, we model the network as a labor market. In this market, PUs and SUs are regarded as employer and employee respectively. Each PU proposes certain contracts to attract the SUs, the contract include relay power and spectrum access time, each SU maximize its utility by selecting the most suitable contract. But PUs and SUs have conflicting objectives in contract content. To tackle this problem, we put forward to a centralized maximizing expectation utility scheme, which convert the optimal contract design into an optimization problem. After that, a approximate method for solving the optimization problem is proposed. Simulation results show that the losses of PUs’ total utilities caused by incomplete information and approximate algorithm are relatively small, especially when the number of SUs is very large.

목차

Abstract
 1. Introduction
 2. System Model and Problem Formulation
  2.1 System Model
  2.2. Problem Formulation
 3. Optimal Contracts Design under Incomplete Information
  3.1 Optimization Problem of Optimal Contracts
  3.2 The Solution of Optimization Problem of Optimal Contracts
 4. Simulation Result and Analysis
 5. Conclusion
 Acknowledgement
 References

키워드

저자

• Guangqiang Shi [ School of Information Engineering, Zhengzhou University, Zhengzhou, China ]
• Ying Liu [ School of Information Engineering, Zhengzhou University, Zhengzhou, China ]
• Xiaomin Mu [ School of Information Engineering, Zhengzhou University, Zhengzhou, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Multimedia and Ubiquitous Engineering

• 간기

  월간

• pISSN

  1975-0080

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605