现代电子技术2025，Vol.48Issue(23)：81-88,8.DOI:10.16652/j.issn.1004-373x.2025.23.012
基于先验位置信息辅助的毫米波车载信道估计研究
Research on millimeter-wave vehicular channel estimation assisted by a priori location information
摘要
Abstract
In view of the challenges of real-time property and reliability faced by channel estimation and beamforming in millimeter-wave vehicular communications,a channel estimation method based on a priori position information assistance is proposed.A single-user millimeter-wave massive MIMO channel with hybrid digital-analogue structure is used for channel estimation of beamforming vectors and measurement vectors in different time slots.Two beam search methods are designed at the vehicular receiver side,which speed up the beamforming speed and shorten the channel estimation time by replacing the vehicle a priori position information with a priori angle information.The simulation results show that the channel estimation time can be significantly reduced with a priori position information assistance in comparison with that without a priori position information assistance.In addition,the receiving signal-to-noise ratio(SNR)can be further improved by combining with the beam search method with equal gain distribution.To sum up,the proposed method can effectively improve the real-time property and robustness of millimeter-wave vehicular communication.关键词
先验位置信息/信道估计/波束成形/车载通信/波束搜索/毫米波Key words
a priori position information/channel estimation/beamforming/vehicular communication/beam search/millimeter-wave分类
信息技术与安全科学引用本文复制引用
罗颖聪,虞贵财,贾国庆..基于先验位置信息辅助的毫米波车载信道估计研究[J].现代电子技术,2025,48(23):81-88,8.基金项目
国家自然科学基金项目(62261056) （62261056）
青海民族大学理工类科学研究重点项目(2024XJZD01) （2024XJZD01）
