中国移动+从需求到实践：6G超大规模天线的技术演进-20页_10mb

Summary of "从需求到实践:6G超大规模天线的技术演进"

6G New Requirements

6G新需求源于沉浸式云XR、全息通信、数字孪生等业务，要求网络峰值速率达到100Gbps、用户体验速率达到10~100Gbps、谱效提升2~3倍。MIMO技术作为核心，需适应这些极端性能目标。

MIMO Technology Evolution

Concentrated MIMO

From 3G's smart antenna to 5G's Massive MIMO (up to 64 channels), concentrated MIMO addresses capacity needs but faces challenges like high deployment costs and suboptimal coverage in dense scenes. Evolution includes density increases with diminishing returns, leading to needs for cost-reduction strategies.

Distributed MIMO

This evolution targets hotspot scenarios in 6G, focusing on user-centric collaboration through multi-node intelligence for higher rates and flexibility. Challenges involve synchronization complexity and pre-coding algorithms.

Challenges and Solutions

Ultra-large scale MIMO faces high costs, coverage deficits at mmWave frequencies, and synchronization issues. Solutions include sparse array designs for efficiency, AI-enabled spectral efficiency and feedback improvements, and fusion techniques to balance performance with resource constraints.

Future Directions and Validation

Future work explores AI-integrated design, distributed MIMO scalability with reduced complexity, and network collaboration for enhanced applications. Validation through trials demonstrated 48-stream spectral efficiency, supporting 6G readiness and innovation in areas like mmWave systems.