5G系统中低延时的FBMC调制方法  

Study on FBMC modulation scheme with low-delay in 5G system

作　　者：徐兰天[1] Xu Lantian(The 41st institute of China Electronics Technology Group Corporation, Bengbu 233006, China)

机构地区：[1]中国电子科技集团公司第41研究所

出　　处：《电子测量技术》2018年第5期123-127,共5页Electronic Measurement Technology

基　　金：中国电科技术创新基金项目资助

摘　　要：5G系统对带宽和时延提出了更高的要求,并采用新多址、新波形等关键技术。滤波器组多载波（FBMC）作为5G系统候选新波形之一,快速实现方法是当前研究热点。针对5G系统大带宽下采用IFFT＋PPN的FBMC调制方法带来的高延时,提出了一种满足5G系统低延时要求的宽带FBMC调制方法;该方法采用实虚分离处理技术把延时降到1/2,采用多通道处理技术把延时降低到通道数分之一,采用OQAM FBMC调制方式实现全速率传输,满足5G系统对宽带FBMC信号产生的高速率、低延时的要求,可用于5G系统物理层信号发生单元,以及5G测试的信号源中。5G system brings forward higher requests to bandwidth and time delay.Key technologies,such as new way of multiple access and waveform,are applied in 5 G system.As the candidate of new waveform,FBMC and its way of fast implementation have become hot spot of present research.In order to improve the large time delay resulting from the FBMC modulation scheme based on IFFT and PPN in the 5G wide-band system,a new solution satisfying the time delay is presented in the paper.IQ data is processed separately to decrease the time delay by half.In addition,the Multi-channel processing technology is applied to decrease the time delay to one of number of channels.Full-rate transmission is implemented by 0QAM-FBMC modulation to meet the high-speed,low-delay requirements for the wideband FBMC signals generation.Hence,the solution presented in the paper can be applied in the module of physical layer signal generation in the 5G system and other 5G testing signal source system.

关 键 词：5G FBMC 低延时 PPN OQAM 

分 类 号：TN929.5[电子电信—通信与信息系统]