Research Article
A Spectrum Access Scheme for MIMO Cognitive Networks with Beamforming Design
@INPROCEEDINGS{10.1007/978-3-319-52730-7_12, author={Yanbing Wang and Weidang Lu and Hong Peng and Zhijiang Xu and Xin Liu}, title={A Spectrum Access Scheme for MIMO Cognitive Networks with Beamforming Design}, proceedings={Machine Learning and Intelligent Communications. First International Conference, MLICOM 2016, Shanghai, China, August 27-28, 2016, Revised Selected Papers}, proceedings_a={MLICOM}, year={2017}, month={2}, keywords={Cognitive network MIMO Beamforming Multi-antenna}, doi={10.1007/978-3-319-52730-7_12} }- Yanbing Wang
Weidang Lu
Hong Peng
Zhijiang Xu
Xin Liu
Year: 2017
A Spectrum Access Scheme for MIMO Cognitive Networks with Beamforming Design
MLICOM
Springer
DOI: 10.1007/978-3-319-52730-7_12
Abstract
This paper studies a spectrum access scheme to increase the spectral utilization for the multi-antenna cognitive radio (CR) network. The network comprises of one transmitter-receiver pair for primary users (PUs) and another pair for secondary users (SUs) with secondary transmitter equipped with multi-antenna. We divide the transmission time into two equal time phases, the first for PUs to transmit signals and the second for SUs to relay and transmit self-information. We aim to maximize the data rate of the secondary system through designing the beamforming vectors and power scaling factors with zero-force beamforming (ZFBF) to eliminate the co-channel interference, under the condition that PUs can achieve the target rate. The simulation results demonstrate a higher spectral utilization and a performance gain with the proposed scheme.
