航空兵器2024，Vol.31Issue(1)：89-96,8.DOI:10.12132/ISSN.1673-5048.2023.0087
基于FPGA的无人机非平稳信道动态模拟研究
Research on Dynamic Emulation of Non-Stationary Channel of Unmanned Aerial Vehicles Based on FPGA
摘要
Abstract
Considering the rapid time-varying channel conditions and large Doppler frequency fluctuations caused by high-speed movement of unmanned aerial vehicles,this paper proposes a non-stationary channel emu-lation scheme for Unmanned Aerial Vehicles(UAVs)using a field-programmable gate array platform.The pro-posed scheme adopts the sum of frequency modulation method to generate non-stationary channel fading and pro-poses a real-time algorithm for generating channel parameters to improve the real-time performance of channel emulation and ensure the real-time updating of channel status.In addition,to address the issue of power random fluctuation caused by large Doppler frequency fluctuations,this paper designs an adaptive power equalization module that ensures the stability of fading power by limiting the maximum fluctuation to only 1.13%.Finally,the results of hardware resource consumption analysis demonstrate that the proposed approach in this study sig-nificantly reduces the utilization of storage resources compared to replay-based and pre-stored solutions,with re-ductions of 52.44%and 9.31%,respectively.This makes the proposed approach well-suited for simulating long-duration non-stationary channel fading in UAV scenarios.Additionally,the measured analysis results demon-strate that the channel characteristics output by the proposed hardware emulation scheme,such as path loss and Doppler power spectrum density,closely align with theoretical results when compared to the emulation scheme without the equalizer.This research can be applied to the design and optimization of UAVs communication sys-tems.关键词
无人机/非平稳信道/信道模拟/现场可编程门阵列/路径损耗/动态场景Key words
UAVs/non-stationary channel/channel emulation/field-programmable gate array/path loss/dynamic scene分类
军事科技引用本文复制引用
房胜,毛开,王满喜,华博宇,宋茂忠,朱秋明..基于FPGA的无人机非平稳信道动态模拟研究[J].航空兵器,2024,31(1):89-96,8.基金项目
国家自然科学基金项目(62271250) （62271250）
江苏省自然科学基金项目(BK20211182) （BK20211182）
江苏省重点研发计划(产业前瞻与关键核心技术)(BE2022067 （产业前瞻与关键核心技术）
BE2022067-3) （）
东南大学移动通信国家重点实验室开放研究基金课题(2022D04) （2022D04）
实验技术研究与开发项目(SYJS202304Z) （SYJS202304Z）
