In this paper, we investigate D2D underlaying cellular networks in which both the D2D links and the cellular downlink links have secrecy requirement. We aim to enhance the secrecy sum rate of D2D pairs(DUs) and cellular users(CUs)by sharing the downlink resources of cellular users and exploiting artificial noise. We achieve the design principle for the downlink signal and artificial noise, which provide guidance on secrecy sum rate maximization. Moreover, a pricing-based pairing and D2D power control algorithm is proposed to pair the DUs and CUs for maximizing system secrecy throughput. Finally, simulation results indicate that the secrecy sum rates of DUs and CUs are improved efficiently by injected artificial noise. The proposed pricing-based scheme obtains better performance of system secrecy throughput than random or graph-based algorithms.
Secure D2D Communication Underlying Cellular Networks: Artificial Noise Assisted
2016-09-01
431658 byte
Conference paper
Electronic Resource
English