Research Article
Hybrid Duplex Relay Selection in Cognitive Radio Network
@INPROCEEDINGS{10.1007/978-3-030-63941-9_3, author={Yaru Xue and Weina Hou and Zhaoyi Li and Shuaishuai Xia}, title={Hybrid Duplex Relay Selection in Cognitive Radio Network}, proceedings={6GN for Future Wireless Networks. Third EAI International Conference, 6GN 2020, Tianjin, China, August 15-16, 2020, Proceedings}, proceedings_a={6GN}, year={2021}, month={1}, keywords={Cognitive network Relay selection Hybrid duplex mode Low-interference}, doi={10.1007/978-3-030-63941-9_3} }- Yaru Xue
Weina Hou
Zhaoyi Li
Shuaishuai Xia
Year: 2021
Hybrid Duplex Relay Selection in Cognitive Radio Network
6GN
Springer
DOI: 10.1007/978-3-030-63941-9_3
Abstract
The existing cognitive single relay selection technology is lack of a full-duplex/half-duplex mode switching criteria, and only maximizes the system performance of secondary users in the single-duplex mode relay selection process, which result in a single relay mode and the overall performance of single primary networks and secondary networks is not optimal. To tackle these problems, the criteria for switching the hybrid duplex mode of the relay node is first derived. In the case of adopting the amplify-and-forward (AF) and decode-forward (DF) protocols, each candidate relay terminal selects the optimal duplex mode according to the signal-to-noise ratio (SNR) of the self-interference channel and the critical point of self-interference. Then propose a low interference hybrid duplex relay selection algorithm, the relay node uses the comprehensive performance loss of the primary network performance and the performance gain of the secondary network user as the indicator to optimize the relay selection, which maximizes the sacrifice value of the primary network. The simulation results show that the proposed algorithm can significantly improve the performance of the primary network system and the whole system. Furthermore, the performance of the secondary network is slightly reduced (or even improved).
