Cooperative spectrum sharing of multiple primary users and multiple secondary users

Hang Liu*, Sha Hua, Xuejun Zhuo, Dechang Chen, Xiuzhen Cheng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


This paper proposes a multiple-input multiple-output (MIMO) based cooperative dynamic spectrum access (DSA) framework that enables multiple primary users (PUs) and multiple secondary users (SUs) to cooperate in spectrum sharing. By exploiting MIMO in cooperative DSA, SUs can relay the primary traffic and send their own data at the same time, which greatly improves the performance of both PUs and SUs when compared to the non-MIMO time-division spectrum sharing schemes. Especially, we focus on the relay selection optimization problem among multiple PUs and multiple SUs. The network-wide cooperation and competition are formulated as a bargaining game, and an algorithm is developed to derive the optimal PU-SU relay assignment and resource allocation. Evaluation results show that both primary and secondary users achieve significant utility gains with the proposed framework, which gives all of them incentive for cooperation.

Original languageEnglish
Pages (from-to)191-195
Number of pages5
JournalDigital Communications and Networks
Issue number4
StatePublished - 1 Nov 2016
Externally publishedYes


  • Bargaining game
  • Cooperative spectrum sharing
  • Dynamic spectrum access
  • MIMO
  • Relay selection


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