Joint Radar-Communication Transmission: A Generalized Pareto Optimization Framework
Joint Radar-Communication Transmission: A Generalized Pareto Optimization Framework
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DOI：
10.1109/tsp.2021.3077307
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发表时间：
2021
影响因子：
5.4
通讯作者：
Li Chen;Fan Liu;Weidong Wang;C. Masouros
中科院分区：
文献类型：
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作者：
Li Chen;Fan Liu;Weidong Wang;C. Masouros
双功能雷达通信（DFRC）已被设想为许多新兴应用的关键使能器。然而，通信和传感功能之间的内在差异给充分实现该技术的前景带来了挑战。在本文中，我们提出了一个多天线DFRC系统的帕累托优化框架，其中具有多个天线的单个发射机与多个用户通信，同时检测雷达目标。开始，我们定义了一个可实现的性能域，该性能域是建立在雷达空间波束图的峰值与旁瓣之差（DPSL）和每个通信用户的信号与干扰加噪声比（SINR）的基础上的，该性能域被证明是紧凑的和正常的。然后，我们制定了一个公平的配置文件优化问题的最低可接受的性能水平的双重功能和预定义的方向，以达到帕累托边界的可实现的性能区域。此外，我们提供了一个二分法搜索算法来解决多项式复杂度的Pareto优化问题，并证明其最优性可以通过单流传输。作为进一步的步骤，我们将讨论扩展到DFRC波束成形设计给定的硬件损伤。最后，我们评估所提出的设计的有效性和所带来的影响，通过数值模拟的损伤。
Dual-functional radar-communication (DFRC) has been envisioned as a key enabler for a number of emerging applications. Nevertheless, the intrinsic difference between communication and sensing functionalities has imposed challenges in fully realizing the promise of the technology. In this paper, we propose a Pareto optimization framework for a multi-antenna DFRC system, where a single transmitter with multiple antennas communicates with multiple users and detects radar targets simultaneously. To begin with, we define an achievable performance region that is built upon the difference between peak and sidelobe (DPSL) of the radar spatial beampattern and the signal-to-interference-plus-noise ratio (SINR) of each communication user, which is proved to be compact and normal. Then, we formulate a fairness-profile optimization problem with a lowest acceptable performance level of dual functionalities and a pre-defined direction to attain the Pareto boundary of the achievable performance region. Also, we provide a bisection search algorithm to solve the Pareto optimization problem with polynomial complexity, and prove its optimality can be achieved by single-stream transmission. As a further step, we extend the discussion to the DFRC beamforming design given hardware impairments. Finally, we evaluate the effectiveness of the proposed design and the impact brought by the impairments by numerical simulations.