Abstract
Key challenges of emerging mobile communication systems are to provide higher data rates, diverse device connectivity, low latency, higher system capacity, and low energy consumption. The communication systems exploiting the millimeter-wave (mmWave) band are realized to resolve thereof inevitable issues. However, security is considered as one of the challenging issues in mmWave communication in addition to unavoidable problems (e.g., propagation loss, penetration loss, and fading). This study aims to construct efficient secure hybrid precoder with low-resolution phase shifters that can protect legitimate information from eavesdropping by employing coordinated analog precoder and combiner algorithms and improve the secrecy rate. Moreover, in order to further enhance the secrecy rate, hybrid precoder are obtained using an efficient channel. This work compares its results with the recent approach reported in the literature, which indicates that our proposed model outperforms at high signal-to-noise ratio (SNR) values, while our model provides similar performance at low SNR values. Simulation studies also confirm the effectiveness of the proposed hybrid precoder to achieve maximum secrecy rate.
Highlights
The millimeter-waves aim to provide a wide bandwidth around 200 times more than the present mobile communication systems by utilizing the upper part of the electromagnetic spectrum
They established that the generalized eigen decomposition (GED) scheme [18] based on physical layer security (PLS) displays comprehensive outcomes than generalized singular value decomposition (SVD) (GSVD) approach [19] in the mmWave communication systems.Farther, they showed that significant information leakage can be realizable by adopting conventional precoding design without PLS effort, which approves the importance of PLS
It is noticed that the proposed algorithm achieves nearly 64.5 bps/Hz secrecy performance gain while algorithm reported in [15] attains performance gains of almost 56.5 bps/Hz, which further confirms that the proposed algorithm provides superior secrecy rate performance than its counterpart at high signal-to-noise ratio (SNR) values
Summary
The millimeter-waves (mmWaves) aim to provide a wide bandwidth around 200 times more than the present mobile communication systems by utilizing the upper part of the electromagnetic spectrum. Eve is deploying the same number of antennas similar to Alice and modeled hybrid-precoding design with high-resolution PSs, and they presented a hybrid precoder design exploiting low-resolution PSs in [15] They obtained secure analog precoder and combiner by utilizing the proposed algorithm, and found the digital precoder that helped them to further improve the security. Is to design a secure hybrid precoder that ensures secure transmission for the intended user without significant information leakage towards Eve, and the second is to improve the secrecy rate at high SNR values in mmWave MIMO communication systems. The transpose and conjugate-transpose operations are represented by T and H , respectively
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