一种支持多协议的低延时OFDM系统设计  

A multi-protocols low-latency OFDM system design

作　　者：陈之晟 张锋[1] CHEN Zhisheng;ZHANG Feng(Key Lab of Microelectronics,Institute of Microelectronics of the Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 101408,China)

机构地区：[1]中国科学院微电子研究所重点实验室,北京100029 [2]中国科学院大学,北京101408

出　　处：《电子设计工程》2022年第6期11-15,共5页Electronic Design Engineering

基　　金：国家自然科学基金资助项目(61720106013)。

摘　　要：未来的网络架构需要更高的灵活性来适应通信条件的变化,从而提高频谱的利用率,能够根据环境和频谱要求在多种标准下运行的认知无线电变得越来越重要。文中介绍了一种基于FPGA的支持多协议的低延时OFDM系统设计方案,该系统能够在多种不同的OFDM协议标准间进行动态快速切换。实验结果表明,与传统方法相比,使用动态可重构模块与参数化模块相结合的新型OFDM系统可以减少36.9%以上的系统配置延时,此外,该系统拥有在重配置期间缓存数据以防止传输链路中断的能力。Future network architectures require greater flexibility to adapt to changes in communication conditions to improve spectrum utilization. Cognitive radios that can operate under multiple standards according to the environment and spectrum requirements are becoming more and more important. This article introduces a design method for a low-latency OFDM system that supports multiple protocols. The system can dynamically and quickly switch between a variety of different OFDM standard protocols.Experimental results show that compared with traditional methods,the new OFDM system using dynamic reconfigurable modules combined with parameterized modules can reduce system configuration delays by more than 36.9%. Besides,the system has the ability to buffer data during reconfiguration to prevent interruption of the transmission link.

关 键 词：正交频分复用 动态部分重新配置 认知无线电 硬件系统设计 

分 类 号：TN914[电子电信—通信与信息系统]