论文标题
网络集成感应和通信的协调电力控制
Coordinated Power Control for Network Integrated Sensing and Communication
论文作者
论文摘要
该通信论文研究网络集成的传感和通信（ISAC）系统，该系统统一了通信和分布式雷达传感的干扰通道。在此系统中，一组分布式ISAC发射机向其各自的通信用户（CUS）发送单个消息，同时与多个感应接收器合作，以估算一个目标的位置。我们利用ISAC发射机之间的协调功率控制，以最大程度地减少其总发射功率，同时确保单个CUS处的最小信噪比与噪声比率（SINR）约束，以及最大的CRAMér-Rao Rao下限（CRLB）要求目标位置估计。尽管公式的协调能力控制问题是非凸的，并且一般难以解决，但我们提出了两种有效的算法，分别基于半明确弛豫（SDR）和CRLB近似值获得高质量的溶液。数值结果表明，与启发式单独的通信 - 感应设计相比，所提出的设计在降低功率方面实现了可观的性能。
This correspondence paper studies a network integrated sensing and communication (ISAC) system that unifies the interference channel for communication and distributed radar sensing. In this system, a set of distributed ISAC transmitters send individual messages to their respective communication users (CUs), and at the same time cooperate with multiple sensing receivers to estimate the location of one target. We exploit the coordinated power control among ISAC transmitters to minimize their total transmit power while ensuring the minimum signal-to-interference-plus-noise ratio (SINR) constraints at individual CUs and the maximum Cramér-Rao lower bound (CRLB) requirement for target location estimation. Although the formulated coordinated power control problem is non-convex and difficult to solve in general, we propose two efficient algorithms to obtain high-quality solutions based on the semi-definite relaxation (SDR) and CRLB approximation, respectively. Numerical results show that the proposed designs achieve substantial performance gains in terms of power reduction, as compared to the benchmark with a heuristic separate communication-sensing design.
