无线电工程2024，Vol.54Issue(4)：992-997,6.DOI:10.3969/j.issn.1003-3106.2024.04.024
用户移动性下的毫米波自适应调制策略研究
Mobility-based Millimeter Wave Adaptive Modulation Strategy
摘要
Abstract
Signal transmission distance varies when users move randomly.By exploiting the sensitivity to distance in millimeter wave communication,a distance-adaptive modulation scheme is proposed.When the received Bit Error Rate(BER)exceeds the threshold,the user sends distance,antenna gain and average Signal to Noise Ratio(SNR)feedbacks to the base station,and the latter adjusts the modulation order and transmission power to ensure that the BER is below the threshold.The modulation order is determined according to the BER threshold,distance and SNR.And the transmit power is optimized by maximizing the Spectrum Efficiency(SE).Simulation results show that when the transmission distance is less than 300 m,256-order Quadrature Amplitude Modulation(256QAM)is used.When the transmission distance is between 300～500 m,64QAM modulation is used.And when the transmission distance is between 500～800 m,16QAM modulation is adopted.4QAM modulation is applied when the transmission distance is more than 800 m.Compared with existing millimeter wave modulation schemes such as Generalized Space Modulation(GSM-QAM),Pulse Position Modulation(PPM)and constant QAM,the proposed adaptive modulation scheme has the highest data rate under the same BER condition.关键词
自适应调制/传输距离/误码率/发送功率/毫米波通信Key words
adaptive modulation/transmission distance/BER/transmit power/millimeter wave communication分类
信息技术与安全科学引用本文复制引用
李葛,杨博,文彦博,何顺杰,胡珍珍..用户移动性下的毫米波自适应调制策略研究[J].无线电工程,2024,54(4):992-997,6.基金项目
国家自然科学基金(62101076) （62101076）
四川省青年科技基金(2022NSFSC0920) （2022NSFSC0920）
成都信息工程大学引进人才科研启动项目(KYTZ202102,376157)National Natural Science Foundation of China(62101076) （KYTZ202102,376157）
Sichuan Provincial Youth Science Foundation(2022NSFSC0920) （2022NSFSC0920）
Talents Start-up Project of Scientific Research in Chengdu University of Information Technology(KYTZ202102,376157) （KYTZ202102,376157）
