OFDM ISAC系统中用于到达时间估计的动态功率分配
Dynamic Power Allocation in OFDM ISAC for Time of Arrival Estimation
AI总结：
针对OFDM ISAC系统中通信与感知性能平衡问题，提出一种动态功率分配策略，同时满足PSL和ToA估计精度约束，感知性能不足时优先保障通信，数值结果验证其有效性。
AI中文摘要：
集成感知与通信（ISAC）系统中的资源分配对于平衡通信和感知性能至关重要。本文针对正交频分复用（OFDM）ISAC系统提出一种新颖的动态功率分配策略，在满足峰值旁瓣电平（PSL）和感知精度约束（尤其是到达时间（ToA）估计）的同时优化通信容量。与单独处理PSL或精度的传统方法不同，我们的方法动态分配功率以同时满足这两个约束。此外，当感知性能不足时，它优先保障通信，避免通信容量损失。数值结果验证了考虑两种感知约束的重要性，并证明了所提动态功率分配策略的有效性。
英文摘要：
Resource allocation in Integrated Sensing and Communication (ISAC) systems is critical for balancing communication and sensing performance. This paper introduces a novel dynamic power allocation strategy for Orthogonal Frequency Division Multiplexing (OFDM) ISAC systems, optimizing communication capacity while adhering to Peak Side-lobe Level (PSL) and sensing accuracy constraints, particularly for Time of Arrival (ToA) estimation. Unlike conventional methods that address either PSL or accuracy in isolation, our approach dynamically allocates power to satisfy both constraints. Additionally, it prioritizes communication when sensing performance is insufficient, avoiding any loss in communication capacity. Numerical results validate the importance of considering both sensing constraints and demonstrate the effectiveness of the proposed dynamic power allocation strategy.
