一种容量可调的多并发反向散射通信系统设计  

Design of a multi-concurrent backscatter communication system with adjustable capacity

作　　者：林苏冬 宫新保[1] 刘涛[1] LIN Su-dong;GONG Xin-bao;LIU Tao(Department of Electronic Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《信息技术》2021年第6期73-77,共5页Information Technology

摘　　要：随着物联网应用场景及规模的不断扩大,现有的物联网设备无法满足高速率、远距离及低功耗等需求。文中利用不同频率循环移位的LoRa调制信号间的正交性结合OOK调制技术,在433MHz频段搭建适用于工业电力应用场景的多标签并发的低功耗反向散射通信系统。在此基础上利用在数字域生成啁啾信号时的相位量化特性,实现一种容量可调的多并发反向散射通信系统,进一步提高系统灵活性。With the continuous expansion of the application scenarios and scale of the Internet of Things,the existing Internet of Things devices cannot meet the requirements of high speed,long distance and low power consumption.This paper uses the orthogonality between LoRa modulating signals with different frequency cyclic shifts and OOK modulation technology to build a multi-tag concurrent low-power backscatter communication system suitable for industrial power application scenarios in the 433MHz frequency band.And on this basis,using the phase quantization characteristics when generating chirped signals in the digital domain,a multi-concurrent backscatter communication system with adjustable capacity is realized,which further improves system flexibility.

关 键 词：物联网 反向散射 LoRa调制 系统容量 

分 类 号：TN919.64[电子电信—通信与信息系统]