基于TD-OFDM的MESH自组网络广播信道设计方法  

TD-OFDM-Based Broadcast Channel Design for MESH Ad Hoc Networks

作　　者：黄坚 黄波[1] HUANG Jian;HUANG Bo(College of Telecommunications&Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《移动通信》2025年第2期115-119,共5页Mobile Communications

基　　金：广东省智能信息处理重点实验室项目“面向超大规模阵列的定位技术研究”(ML-2023-02)。

摘　　要：针对Wi-Fi MESH各节点发送数据时会发生丢包的现象,导致通信传输可靠性不高的问题,提出了一种基于TDOFDM的MESH自组网络广播信道设计方法。首先,进行帧结构设计,设计广播子帧和数据子帧的结构。接着,进行时间同步,同步完成后数据在物理层进行一系列流程,完成整个广播信道的设计。经过仿真,实验结果表明将物理广播信道加入MESH组网后对比基于Wi-Fi的MESH组网,自组网碰撞和重传大大减少,正确接收码字的概率提升了18.6%,提高了通信传输的可靠性。To address the packet loss issue and low communication reliability in Wi-Fi Mesh networks during data transmission between nodes,this paper proposes a TD-OFDM-based broadcast channel design method for Mesh ad hoc networks.The approach begins with the design of the frame structure,which includes the definition of broadcast and data subframes.Subsequently,time synchronization is performed,and after synchronization,the data undergoes a series of processes at the physical layer to complete the overall broadcast channel design.Simulations are conducted,and the experimental results demonstrate that incorporating the physical broadcast channel into the Mesh network significantly reduces collisions and retransmissions compared to traditional Wi-Fi Mesh networks.Furthermore,the probability of correctly receiving codewords increases by 18.6%,enhancing communication reliability.

关 键 词：MESH自组网 物理广播信道 帧结构 物理层 

分 类 号：TN929.5[电子电信—通信与信息系统]