Secure Transmission in Massive MIMO System With Specular Component-Based Beamforming and Artificial Noise Over Ricean Fading Channel
| Autor: | Kang An, Symeon Chatzinotas, Aiyan Qu, Gan Zheng, Xianyu Zhang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Computer science [C05] [Engineering
computing & technology] Beamforming Computer science MIMO Data_CODINGANDINFORMATIONTHEORY Sciences informatiques [C05] [Ingénierie informatique & technologie] Topology Upper and lower bounds Signal-to-noise ratio Control and Systems Engineering Artificial noise Fading Electrical and Electronic Engineering Secure transmission Computer Science::Cryptography and Security Computer Science::Information Theory Communication channel |
| Zdroj: | IEEE Wireless Communications Letters. 10:2479-2483 |
| ISSN: | 2162-2345 2162-2337 |
| DOI: | 10.1109/lwc.2021.3104457 |
| Popis: | This letter investigates the secure transmission in a multi-user massive MIMO system over Ricean fading channel in the presence of a multi-antenna eavesdropper. In order to reduce the system complexity and the channel estimation overhead, a low-complexity beamforming (BF) scheme using only the specular component is presented. Moreover, the generation of artificial noise (AN) is employed at the base station (BS) for additional security enhancement. Specifically, a tractable closed-form lower bound for the achievable ergodic secrecy rate is derived. Furthermore, the optimal power allocation factor between the transmit data power and AN signal power with fixed total power limit is obtained based on the asymptotic analysis to maximize the achievable ergodic secrecy rate. The analytical results reveal that the ergodic secrecy rate improves with the increase of Ricean ${K}$ -factor and converges to a specific constant when increasing the number of antennas at the BS. The performance of the proposed scheme is evaluated through comprehensive simulations. |
| Databáze: | OpenAIRE |
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