Joint radar and communication (JRC) is a promising technique for spectrum re-utilization, which enables radar sensing and data transmission to operate on the same frequencies and the same devices. However, due to the multi-objective property of JRC systems, channel allocation to JRC nodes should be carefully designed to maximize system performance. Additionally, because of the broadcast nature of wireless signals, a watchful adversary, i.e., a warden, can detect ongoing transmissions and attack the system. Thus, we develop a covert JRC system that minimizes the detection probability by wardens, in which friendly jammers are deployed to improve the covertness of the JRC nodes during radar sensing and data transmission operations. Furthermore, we propose a robust multi-item auction design for channel allocation for such a JRC system that considers the uncertainty in bids. The proposed auction mechanism achieves the properties of truthfulness, individual rationality, budget feasibility, and computational efficiency. The simulations clearly show the benefits of our design to support covert JRC systems and to provide incentive to the JRC nodes in obtaining spectrum, in which the auction-based channel allocation mechanism is robust against perturbations in the bids, which is highly effective for JRC nodes working in uncertain environments.
翻译:联合雷达和通信(JRC)是频谱再利用的一个很有希望的技术,它使雷达遥感和数据传输能够在同一频率和同一装置上运行,然而,由于JRC系统的多目标特性,应当谨慎设计向JRC节点分配频道的分配,以最大限度地实现系统性能。此外,由于无线信号的广播性质,一个监视对手,即典狱长,可以探测正在进行的传输和攻击系统。因此,我们开发了一个秘密JRC系统,最大限度地减少狱警的探测概率,其中部署友好的干扰器,以提高JRC节点在雷达遥感和数据传输操作期间的隐蔽性。此外,我们提议为这种考虑投标不确定性的JRC系统分配频道设计一个强有力的多项目拍卖设计,拟议的拍卖机制具有真实性、个人合理性、预算可行性和计算效率等特性。模拟清楚地表明,我们的设计有利于支持JRC系统的隐蔽性和激励JRC节点获得频谱,在这种频谱中,拍卖的频道分配机制不会对JRC的高度不稳定性进行有效的拍卖。