<p>This paper explores cooperative time-of-arrival (TOA) localization using remote direct memory access (RDMA)-interconnected edge platforms, where multiple distributed receivers send their timing measurements to an edge server for centralized processing. In this system, the positions of both the transmitter and the target are unknown, while the positions of the receivers are fixed and known. To solve this, we introduce a semidefinite-relaxation-based (SDR) solver, which handles the nonlinear nature of TOA localization and offers a more accurate and stable solution compared to traditional methods. The approach takes full advantage of RDMA’s low-latency, high-throughput data transfer, allowing for real-time localization even in large-scale systems. By centralizing the TOA measurements at the edge server, the system can manage many receivers while ensuring synchronization and precise position estimates. Simulations under different geometries and noise levels demonstrate the effectiveness of the proposed method.</p>