Research Article
Ergodic Lower Bound and Optimal Power Allocation for Secrecy-Capacity-Optimization-Artificial-Noise in MIMO Wireless System
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@INPROCEEDINGS{10.1007/978-3-030-93398-2_64, author={Yebo Gu and Zhilu Wu and Zhendong Yin}, title={Ergodic Lower Bound and Optimal Power Allocation for Secrecy-Capacity-Optimization-Artificial-Noise in MIMO Wireless System}, proceedings={Wireless and Satellite Systems. 12th EAI International Conference, WiSATS 2021, Virtual Event, China, July 31 -- August 2, 2021, Proceedings}, proceedings_a={WISATS}, year={2022}, month={1}, keywords={Artificial noise Transmission security Secrecy capacity SCO-AN Power distribution}, doi={10.1007/978-3-030-93398-2_64} }- Yebo Gu
Zhilu Wu
Zhendong Yin
Year: 2022
Ergodic Lower Bound and Optimal Power Allocation for Secrecy-Capacity-Optimization-Artificial-Noise in MIMO Wireless System
WISATS
Springer
DOI: 10.1007/978-3-030-93398-2_64
Abstract
The transmission security problem is considered in this paper. A new artificial noise is added into transmitted signal to improve the secrecy performance of the system. A expression for the ergodic lower bound of SCO-AN system is derived. Based on the expression, optimal power distribution for SCO-AN system is studied. Moreover, optimal ratio of power distribution can be calculated. Moreover, the influence of channel estimation error is considered. As a result, it is necessary to generate more SCO-AN if the channel information error is considered.
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