Based on the background of a mine, this study aimed to improve underground wireless communication. The study selected Zigbee technology from many wireless technologies as the basis, expounded the technical advantages and disadvantages, and addressed its disadvantages. First, the modulation technology of Zigbee was improved. This article selects and describes O-QPSK technology from three modulation technologies, thereby addressing the synchronization difficulties caused by inherent technical reasons, and proposes a modulation method based on feedforward timing. Moreover, excellent performance was achieved in the follow-up simulation experiment. For networking problems, a series of mechanisms are proposed to address several problems in large-scale networking: node offline, energy waste, signal delay, etc. This article proposes five main mechanisms and an improved protocol from two significant perspectives. The problem of node disconnection is divided into two parts. Considering the different status of edge nodes and important nodes in the network, three mechanisms are proposed for edge nodes for disconnection detection and self-repair, and two mechanisms are proposed for essential nodes. This can compensate for the loss caused by the disconnection of essential nodes at a specific time. For network energy waste, an Improved-LEACH protocol is proposed to alleviate the signal delay problem. The performance of the five mechanisms and one protocol was verified in a simulation test, and the performance was reasonable and in line with expectations.

中文翻译：

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仿矿衰落信道中Zigbee网络连接的优化措施研究

基于地雷的背景，本研究旨在改善地下无线通信。该研究从许多无线技术中选择了Zigbee技术作为基础，阐述了技术优缺点，并解决了其缺点。首先，改进了Zigbee的调制技术。本文从三种调制技术中选择和描述了O-QPSK技术，从而解决了由内在的技术原因引起的同步困难，并提出了一种基于前馈定时的调制方法。此外，在后续的模拟实验中获得了出色的性能。对于网络问题，提出了一系列机制来解决大规模网络中的几个问题：节点脱机，能源浪费，信号延迟等。本文从两个重要角度提出了五种主要机制和一种改进的协议。节点断开连接的问题分为两个部分。考虑到边缘节点和网络中重要节点的状态不同，针对边缘节点提出了三种断开检测和自修复机制，针对关键节点提出了两种机制。这可以补偿在特定时间因必需节点断开而造成的损失。对于网络能源浪费，提出了一种改进的LEACH协议来缓解信号延迟问题。通过仿真测试验证了五种机制和一种协议的性能，性能合理，符合预期。节点断开连接的问题分为两个部分。考虑到边缘节点和网络中重要节点的状态不同，针对边缘节点提出了三种断开检测和自修复机制，针对关键节点提出了两种机制。这可以补偿在特定时间因必需节点断开而造成的损失。对于网络能源浪费，提出了一种改进的LEACH协议来缓解信号延迟问题。通过仿真测试验证了五种机制和一种协议的性能，性能合理，符合预期。节点断开连接的问题分为两个部分。考虑到边缘节点和网络中重要节点的状态不同，针对边缘节点提出了三种断开检测和自修复机制，针对关键节点提出了两种机制。这可以补偿在特定时间因必需节点断开而造成的损失。对于网络能源浪费，提出了一种改进的LEACH协议来缓解信号延迟问题。通过仿真测试验证了五种机制和一种协议的性能，性能合理，符合预期。针对基本节点提出了两种机制。这可以补偿在特定时间因必需节点断开而造成的损失。对于网络能源浪费，提出了一种改进的LEACH协议来缓解信号延迟问题。通过仿真测试验证了五种机制和一种协议的性能，性能合理，符合预期。针对基本节点提出了两种机制。这可以补偿在特定时间因必需节点断开而造成的损失。对于网络能源浪费，提出了一种改进的LEACH协议来缓解信号延迟问题。通过仿真测试验证了五种机制和一种协议的性能，性能合理，符合预期。