Smart Pilot Assignment for IoT in Massive MIMO Systems: A Path Towards Scalable IoT Infrastructure
arxiv(2024)
摘要
5G sets the foundation for an era of creativity with its faster speeds,
increased data throughput, reduced latency, and enhanced IoT connectivity, all
enabled by Massive MIMO (M-MIMO) technology. M-MIMO boosts network efficiency
and enhances user experience by employing intelligent user scheduling. This
paper presents a user scheduling scheme and pilot assignment strategy designed
for IoT devices, emphasizing mitigating pilot contamination, a key obstacle to
improving spectral efficiency (SE) and system scalability in M-MIMO networks.
We utilize a user clustering-based pilot allocation scheme to boost IoT device
scalability in M-MIMO systems. Additionally, our smart pilot allocation
minimizes interference and enhances SE by treating pilot assignment as a graph
coloring problem, optimizing it through integer linear programming (ILP).
Recognizing the computational complexity of ILP, we introduced a binary
search-based heuristic predicated on interference threshold to expedite the
computation, while maintaining a near-optimal solution. The simulation results
show a significant decrease in the required pilot overhead (about 17
substantial enhancement in SE (about 8-14
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要