Network Survivability in User-Centric Distributed Massive MIMO with Segmented Fronthaul: Centralized and Distributed Indoor Processing

This work investigates protection schemes in User Centric (UC) distributed massive MIMO (D-mMIMO) networks with serial fronthaul connections under limited capacity, using dynamic bit allocation and different precoding techniques. The study evaluates the impact of failures, protection schemes, performance degradation, and operational costs across various user densities. Findings highlight the role of protection strategies in maintaining service quality over time, particularly under constrained fronthaul. The Cross-Connection (CC) scheme offers the best balance between reliability and cost, especially with distributed processing. Among all configurations, distributed CC outperforms alternatives involving duplication, making it the most scalable and cost-effective for high-density UC D-mMIMO.