摘要
在研究正交时频空(Orthogonal Time Frequency and Space,OTFS)调制原理基础上设计了一种基于零后缀(Zero Suffix,ZP)保护的OTFS波形方案。提出了同步、信道估计方法和基于时延-时域最大比合并(Maximum Ratio Combining,MRC)的检测算法并对该算法进行了化简;给出了信道插值和MRC检测器硬件实现方案并对提出的OTFS系统波形进行了现场可编程逻辑门阵列(Field Programmable Gate Array,FPGA)硬件实现,验证了所设计OTFS系统关键算法的可行性。测试结果表明,所设计OTFS系统具有良好的抗双选择性衰落性能。
Based on the principle of Orthogonal Time Frequency and Space(OTFS)modulation,this paper designs an OTFS waveform scheme based on Zero Suffix(ZP)protection.Methods of synchronization,channel estimation,and the detection algorithm based on delay-time domain Maximum Ratio Combining(MRC)are presented,and the MRC detection algorithm is simplified.Hardware implementation schemes of channel interpolation and the MRC detector are given.And the Field Programmable Gate Array(FPGA)hardware implementation of the proposed OTFS system waveform is carried out to verify the feasibility of the key algorithms of the designed OTFS system.Test results show that the designed OTFS system has good performance in resisting doubly selective fading.
作者
王毳
吴丹
孙腾
王晋忠
WANG Cui;WU Dan;SUN Teng;WANG Jinzhong(The 54th Research Institute of CETC,Shijiazhuang 050081,China)
出处
《无线电通信技术》
北大核心
2025年第5期1128-1134,共7页
Radio Communications Technology
关键词
正交频分复用
正交时频空
时延-多普勒域
迭代检测
orthogonal frequency division multiplexing
OTFS
delay-Doppler domain
iterative detection
作者简介
王毳,男,(1974-),硕士,高级工程师;吴丹,女,(1981-),硕士,高级工程师;孙腾,男,(1986-),硕士,高级工程师;王晋忠,男,(1987-),硕士,高级工程师。
