分类：其它    下载：0    浏览：17    时间：2026-01-28

Abstract—With the emergence of 4k/8k video, the throughput requirement of video delivery will keep grow to tens of Gbps. Other new high-throughput and low-latency video applications including augmented reality (AR), virtual reality (VR), and online gaming, are also proliferating. Due to the related stringent requirements, supporting these applications over wireless local area network (WLAN) is far beyond the capabilities of the new WLAN standard – IEEE 802.11ax. To meet these emerging demands, the IEEE 802.11 will release a new amendment standard IEEE 802.11be – Extremely High Throughput (EHT), also known as Wireless-Fidelity (Wi-Fi) 7. This article provides the comprehensive survey on the key medium access control (MAC) layer techniques and physical layer (PHY) techniques being discussed in the EHT task group, including the channelization and tone plan, multiple resource units (multi-RU) support, 4096 quadrature amplitude modulation (4096-QAM), preamble designs, multiple link operations (e.g., multi-link aggregation and channel access), multiple input multiple output (MIMO) enhancement, multiple access point (multi-AP) coordination (e.g.,multi-AP joint transmission), enhanced link adaptation and retransmission protocols (e.g., hybrid automatic repeat request (HARQ)). This survey covers both the critical technologies being discussed in EHT standard and the related latest progresses from worldwide research. Besides, the potential developments beyond EHT are discussed to provide some possible future research directions for WLAN. Index Terms—IEEE 802.11be, EHT, Wi-Fi 7, Multi-link Operation,Multi-AP Coordination, MIMO Enhancement, HARQ.

分类：其它    下载：0    浏览：19    时间：2026-01-27

Albert Chung Senior Application Engineer Rohde & Schwarz Taiwan WIFI7技术介绍

分类：其它    下载：0    浏览：12    时间：2026-01-24

Abstract—While the pace of commercial scale application of Wi-Fi 6 accelerates, the IEEE 802.11 Working Group is about to complete the development of a new amendment standard IEEE 802.11be – Extremely High Throughput (EHT), also known as Wi-Fi 7, which can be used to meet the demand for the throughput of 4K/8K videos up to tens of Gbps and low-latency video applications such as virtual reality (VR) and augmented reality (AR). Wi-Fi 7 not only scales Wi-Fi 6 with doubled bandwidth, but also supports real-time applications, which brings revolutionary changes to Wi-Fi. In this article, we start by introducing the main objectives and timeline of Wi-Fi 7 and then list the latest key techniques which promote the performance improvement of Wi-Fi 7. Finally, we validate the most critical objectives of Wi-Fi 7 – the potential up to 30 Gbps throughput and lower latency. System-level simulation results suggest that by combining the new techniques, Wi-Fi 7 achieves 30 Gbps throughput and lower latency than Wi-Fi 6. Index Terms—IEEE 802.11be, Wi-Fi 7, timeline, feature,throughput, latency.

分类：其它    下载：0    浏览：14    时间：2026-01-24

Abstract—Last years we have witnessed the uprising of location-based applications, which depend on the device’scapabilities to accurately obtain their position. IEEE 802.11, foretelling the need for such applications, started the IEEE 802.11az work on Next Generation Positioning. Although this standard provides positioning enhancements for sub-6 GHz and mmWave bands, high accuracy in the order of centimeters can only be obtained in the latter band, thanks to the high temporal resolution from the multi-GHz bandwidth. This work presents the new techniques provided by IEEE 802.11az for enhanced secured positioning in the mmWave band. Additionally, this paper assesses 802.11az mmWave accuracy using a novel trigonometry solution, compares it with advanced positioning solutions, and identifies open research challenges. Index Terms—IEEE 802.11 standard, Next Generation Positioning, FTM, EDMG, mmWave

分类：其它    下载：0    浏览：14    时间：2026-01-24

IEEE 802.11 DCF协议性能分析模型 钟萍, 施海彬, 庄玉祥, 石江宏, 陈辉煌 厦门大学信息科学与技术学院, 福建厦门361005 摘要： 提出了一种改进的二维Markov链模型用于分析IEEE 802.11 DCF协议. 该模型不仅考虑实际应用中饱和业务量和非饱和业务量的情况，而且考虑DCF协议的退避计时器的冻结状态和有限的重传次数. 通过对该Markov链模型稳定状态的求解并结合M/M/1/K排队模型，导出了DCF系统性能的理论模型. 仿真结果表明，该理论模型能够精确地预测广义IEEE 802.11 DCF协议的系统性能. 关键词: 无线局域网, IEEE 802.11, 分布式协调功能, Markov链模型 Abstract: This paper proposes an improved two-dimensional Markov chain model for the performance analysis of the IEEE 802.11 DCF protocol. The model is applicable to both saturated and unsaturated traffic conditions. Moreover, it extends the existing models to take into account previously-ignored MAC layer factors such as backoff freezing and limited times of retry. In addition, by deriving the stationary state of the Markov model and considering an M/M/1/K queuing model, we further derive a theoretical model for evaluating performance of the general IEEE 802.11 DCF protocols. Accuracy of the proposed theoretical model is validated with simulation results. Key words: wireless local area network, IEEE 802.11, distributed coordination function, Markov chain model

分类：标准规范    下载：4    浏览：176    时间：2025-07-14

《超宽带（UWB）设备无线电管理暂行规定》附件：超宽带（UWB）无线电发射设备技术要求.pdf 一、工作频率范围 7163-8812MHz。 二、发射信号带宽（-10dB 带宽） 不少于500MHz。 三、等效全向辐射功率谱密度限值 不大于-41dBm/MHz

分类：标准规范    下载：0    浏览：406    时间：2025-05-15

通信开发人员经常需要查看协议，3GPP协议官方查看和下载地址如下：（免费、英文） 索引页面，对文档按照领域进行了分类： http://www.3gpp.org/specifications/specification-numbering 下载规范的FTP根目录 http://www.3gpp.org/ftp/Specs/ 3GPP规范采用WORD文件 的ZIP压缩格式保存，文件 名结构如下： SM[-P[-Q]]-V.zip S=系列号-两位数字（见上表） M=尾数（规范编号中系列号后面的部分）-2或3位数字 P=可选的部分编号-1或2位数字，如果有 Q=可选的子部分编号-1或2位数字，如果有 V=版本号，无分隔点-3位数字

分类：产品资料    下载：0    浏览：323    时间：2024-11-09

Cambium Network PTP550 datasheet 点对点5G无线网桥 5.170 ~ 5.980 GHz 1.36 Gbps

分类：产品资料    下载：1    浏览：356    时间：2024-11-09

型号: Force 300-16、Force 300-19、Force 300-19R、Force 300-25、Force 300 CSM 802.11ac Wave 2 (2x2 MIMO/OFDM)

分类：产品资料    下载：5    浏览：281    时间：2024-11-09

Cambium Network ePMP Force 300-25 5G无线网桥，25dBi，千兆网口，建议传输距离10km

分类：产品资料    下载：0    浏览：347    时间：2024-11-09

Cambium Network ePMP Force 300-16产品规格书 5G无线网桥 特点： • Cambium Networks 的 ePMP Force 300-16 专为在高干扰环境中运行而设计，可提供超过 500 Mbps 真实数据吞吐量。 • ePMP Force 300-16 支持从 20MHz 到 80MHz 的信道大小配置，并调制高达 256 QAM。 • Force 300-16 支持本地 Wi-Fi 连接，可轻松从任何支持 Wi-Fi 的设备进行安装、配置和监控。 • ePMP Force 300-16 支持实时频谱监控，不会降低吞吐量 • 可配置的操作模式确保对对称和非对称流量具有强大的适应性，同时提供高性能和低至 3-5 毫秒的往返延迟。 • QoS 管理为三重播放服务（VoIP、视频和数据）提供出色的质量，并提供三个级别的流量优先级。 • F300-16 采用水平方向安装，提供 15度波束宽度和 16dBi增益，可提供引人注目的紧凑型用户或点对点解决方案，且抗干扰能力强。

分类：产品资料    下载：1    浏览：323    时间：2024-11-09

Cambium Network  ePMP 3000L 室外无线AP 主要规格： • 2X2 MIMO，600 Mbps • 支持 256QAM-5/6，80 MHz • 支持宽频率范围：4910 至 5950 MHz • 频率重用，具有 GPS 同步和干扰缓解功能 • 支持最多 64 个用户模块 • 可与 Cambium Networks 90/120 度扇区天线连接使用。还兼容 RF Elements Twistport(tm) 适配器（用于 ePMP） • 使用 cnMaestro 进行云或本地网络管理