毫米波通信定位一体化自组网资源分配技术

毫米波通信链路具有低延迟、高速率和高定向性的特点，能够实现高速率自组网通信和高精度节点定位。在通信定位一体化背景下，研究了毫米波自组网中的多用户资源分配问题。系统采用基于正交频分多址(OFDMA)的多用户通信定位一体化框架，推导了基于位置估计误差界(PEB)和方位估计误差界(OEB)的多用户定位性能准则和基于数据速率的通信准则，建立了时域和频域的资源分配优化问题模型，在保障链路通信速率的前提下，最优化用户的定位性能指标。为了求解上述混合整数非线性规划问题，引入广义Benders分解算法，将优化问题分解为主问题和子问题进行迭代求解，得到有效的资源分配结果，最后通过仿真验证了资源分配对定位与通信性能的影响以及算法的有效性。

Resource Allocation for the Communication-Position Integrated Signal in the Millimeter Wave Mesh Network

The inherent weakness and vulnerability of satellite navigation system restrict its underwater application. Therefore, it is urgent to build an underwater PNT (UPNT) system that can provide real-time, all-domain, practical, effective, safe and reliable PNT information service for underwater users. Aiming at the top-level design of UPNT system, this paper focuses on the core information architecture design and related key issues of PNT architecture. The particularity of UPNT system construction and the requirements of the users for UPNT service are analyzed systematically. The principles in the construction of UPNT system is proposed, and the seven-layer information architecture of UPNT is emphasized, which includes perception layer,pretreatment parameters layer, local space-time parameter layer, environmental information layer, multi-source information fusion layer, system application service layer and service management layer. The main scientific and technical problems involved in the construction of UPNT system are summarized. And the subsequent research directions of UPNT system are discussed.