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In this paper, we aim to improve the physical layer security for Device-to-device (D2D) communication underlaying cellular networks by allocating interference power elegantly, and the security issues of both cellular users and D2D pairs are taken into consideration simultaneously. First of all, the two-level sequential Stackelberg game is introduced to solve the above problem via power allocation,...
Device-to-Device (D2D) communication has advantages of improving the spectral resource efficiency. But unfortunately, it brings about interference and potential secrecy hazard. In this paper, a Stackelberg game based power control algorithm is provided to enhance the physical layer security underlaying D2D communication by utilizing the interference. Then, a mathematical model based on Stackelberg...
Both brachial-ankle pulse wave velocity (baPWV) and ankle-brachial index (ABI) are important predictors for cardiovascular disease (CVD). Patients with chronic obstructive pulmonary disease (COPD) are at high risk of CVD. But the association between airflow obstruction and baPWV or ABI was still unclear. The study was aimed to investigate the influencing factors on arterial stiffness in aged COPD...
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