An Improved Robust Beamforming Design for Cognitive Multiantenna Relay Networks

@article{Zhao2017AnIR,
  title={An Improved Robust Beamforming Design for Cognitive Multiantenna Relay Networks},
  author={Lulu Zhao and Guang Liang and Huijie Liu},
  journal={Mobile Information Systems},
  year={2017},
  volume={2017},
  pages={2719543:1-2719543:11}
}
This paper investigates the robust relay beamforming design for themultiantenna nonregenerative cognitive relay networks (CRNs). Firstly, it is proved that the optimal beamforming matrix could be simplified as the product of a variable vector and the conjugate transposition of a known channel response vector. Then, by exploiting the optimal beamforming matrix with simplified structure, an improved robust beamforming design is proposed. Analysis and simulation results show that, compared with… CONTINUE READING

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