基于IEEE 802.11be标准的高阶调制信号的解调算法分析  

Analysis of Demodulation Algorithm for High-Level Modulated Signal Based on IEEE 802.11be Standard

作　　者：张翔 江丹 ZHANG Xiang;JIANG Dan(Ceyear Technologies(Anhui)Co.,Ltd.,Bengbu Anhui 233010,China;Ceyear Technologies Co.,Ltd.,Qingdao Shandong 266000,China;Bengbu Technology Innovation Center on Electronic Measurement Instrumentation Technology,Bengbu Anhui 233010,China)

机构地区：[1]中电科思仪科技(安徽)有限公司,安徽蚌埠233010 [2]中电科思仪科技股份有限公司,山东青岛266000 [3]电子测量仪器技术蚌埠市技术创新中心,安徽蚌埠233010

出　　处：《通信技术》2023年第5期560-565,共6页Communications Technology

基　　金：电子测量仪器技术蚌埠市技术创新中心项目“高性能5G增强移动宽带通信矢量信号发生器”(AHZQ3026)。

摘　　要：针对IEEE 802.11be标准采用的4096QAM高阶调制信号,提出了一种基于data字段的Wi-Fi信号解调方法,设计了一套完整的Wi-Fi信号解调算法流程。首先,基于前导序列进行帧同步,再利用前导序列中的L-LTF进行载波频偏估计与补偿;其次,根据data字段确定调制类型及空分复用类型,进行信道估计和相位补偿;最后,对补偿后的数据进行解调处理,获得信号质量结果。经过采集数据实验,验证了该算法可有效实现IEEE 802.11be标准Wi-Fi信号的解调。For the 4096QAM high-level modulated signal adopted by IEEE 802.11be standard,this paper proposes a Wi-Fi signal demodulation method based on data field,and designs a complete set of Wi-Fi signal demodulation algorithm flow.First,frame synchronization is carried out based on the leading sequence,and then L-LTF in the leading sequence is used for carrier frequency offset estimation and compensation.After that,the modulation type and the space division multiplexing type are determined according to the data field,and the channel estimation and phase compensation are performed.Finally,the compensated data are demodulated to obtain signal quality results.The experimental results indicate that this algorithm can realize the demodulation of IEEE 802.11be Wi-Fi signal effectively.

关 键 词：IEEE 802.11be 高阶调制 帧同步 频偏补偿 信道估计 相位补偿 

分 类 号：TN929.5[电子电信—通信与信息系统]