AI 中文总结
研究针对未来无线MIMO系统整合频段下的毫米波MIMO信道估计问题，提出利用低于6GHz带外信息的波束域信道估计方法，经与传统方法对比，该方法在视距和非视距场景下频谱效率表现更优。
AI 中文摘要
未来无线多输入多输出（MIMO）系统将整合低于6GHz和毫米波（mmWave）频段，以支持对延迟敏感应用的高数据速率。这些频段的共存使得能够利用可靠的低于6GHz带外信息来辅助毫米波链路建立，特别是用于信道估计。本文提出了一种新颖的毫米波MIMO波束域信道估计方法，该方法利用低于6GHz波束域信息提高估计精度。我们将所提方法与传统带内方法进行比较。仿真结果表明，在视距（LOS）和非视距（NLOS）场景下，我们提出的方法在频谱效率方面均优于现有基线。
英文摘要
Future wireless multiple-input multiple-output (MIMO) systems will integrate sub-6 GHz and millimeter wave (mmWave) bands to support high data rates for latency-critical applications. The coexistence of these bands enables the use of reliable out-of-band sub-6 GHz information to assist mmWave link establishment, particularly for channel estimation. In this paper, we propose a novel beam-domain channel estimation method for mmWave MIMO that leverages sub-6 GHz beam-domain information to improve estimation accuracy. We compare the proposed method with conventional in-band methods. Simulation results show that our proposed method outperform existing baselines in terms of spectral efficiency, in both line-of-sight (LOS) and non-line-of-sight (NLOS) scenarios.
CommentsSubmitted to the 20th International Symposium on Wireless Communication Systems (ISWCS), 2026
Journal ref2026 International Symposium on Wireless Communication Systems (ISWCS), 2026
