An Overview of China Millimeter-Wave Multiple Gigabit Wireless Local Area Network System

Wang, Hong; He, Shiwen; Wang, Haiming; Yang, Guangqi; Huang, Yongming; Chen, Jixing; Zhou, Jianyi; Zhu, Xiao‐Wei; Zhang, Nianzhu; Zhai, Jianfeng; Yang, Lüxi; Jiang, Zhihao; Yu, Chao

doi:10.1587/transcom.2017isi0004

Cited by 9 publications

(3 citation statements)

References 32 publications

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“…The gray level is determined based on the analysis of the actual evaluation object. Generally speaking, the gray level of the gray level is determined according to the number of inspections, the gray level the number of gray levels corresponding to each index is 3 Wireless Communications and Mobile Computing determined, and the whitening weighting function to be used is determined according to this [14]. Suppose there are S gray classes, namely, h ∈ f1, 2, ⋯, ng, and use f h i to indicate that the index I belongs to the whitening weight function of gray class h. The key to system evaluation is to determine the whitening weight function.…”

Section: Gray Fuzzy Comprehensive Evaluation Methodsmentioning

confidence: 99%

Maritime Intelligent Monitoring System Based on Wireless Sensor Network and Construction of Shipping Legal System

Fang

2022

Wireless Communications and Mobile Computing

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With the continuous advancement of the rule of law in society, the pace of global integration is accelerating, and all countries are actively expanding the development of sea areas. The previous maritime navigation management model cannot meet the conditions for active ocean development in the new era. The state must manage ships. My country has established a series of legal systems for ship management, including ship inspection systems, ship registration systems, and ship safety inspection systems. New management models, new service concepts, and prospects have gradually become the focus of attention of domestic and foreign waterway managers. With the continuous advancement of the rule of law in our country, the law enforcement requirements of maritime navigation management are also getting higher and higher. It is very important to create a good legal environment. This article is aimed at studying how to play the role of wireless local area network in maritime navigation management and how to establish a relatively complete legal system. This paper proposes a gray fuzzy comprehensive algorithm. If the fuzzy subset method is used to determine the membership matrix in the fuzzy comprehensive evaluation, then there will be a sudden drop in the degree of membership due to a slight change in the critical value of the index level. Based on this algorithm, a set of preliminary models of maritime channel management is established. The experimental data in this article mentions that in 2017-2020, the percentage of a certain maritime management’s attention to the legal system has clearly shown an upward trend. In 2020, the attention to the legal system is even as high as 69%. It can be seen that supervision improving the legal system is an effective measure. From the data, we can see that the rule of law score in 2018 was about 1.5 points lower than that in 2019, and the rule of law score in 2019 was 7.5 points. The results show that administration according to law puts forward higher requirements on the ability and service level of administrative agencies and their administrative law enforcement personnel, especially in the process of law enforcement, dealing with affairs related to administrative counterparts. Therefore, it is very necessary to establish a complete legal system.

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Section: Gray Fuzzy Comprehensive Evaluation Methodsmentioning

confidence: 99%

Maritime Intelligent Monitoring System Based on Wireless Sensor Network and Construction of Shipping Legal System

Fang

2022

Wireless Communications and Mobile Computing

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“…This can be ensured by conditioning the input signal using a filter rectifier before applying it to the input of the log amplifier. As the op-amp is in the configuration of inverting and 𝑉 𝑖𝑛 is positive, 𝑉 𝑜𝑢𝑡 must be negative and is sufficient to forward bias the emitter-base junction of the BJT, keeping it in the active mode of operation [12,13]. Now:…”

Section: Nonlinear Amplifiermentioning

confidence: 99%

“…When an amplifier modifies the transmitted signal's structure, higher-frequency components stand out more, a phenomenon known as harmonic distortion takes place. This may result in worse signal quality and more spectrum spreading [11,13].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Amplifier Effect on High Bit Rate Modulation Techniques Used in WiFi Generation with MATLAB Simulink

Al-Azzawi,

Kamal,

Ibrahim

et al. 2024

MMEP

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High bit rate modulation is an essential aspect of next-generation WiFi and plays a crucial role in achieving high data rates and increased network capacity. high-bit rate modulation uses advanced modulation schemes, such as 4096-QAM, to increase the maximum number of bits sent over a particular frequency band. Using nonlinear amplifiers in wireless communication systems will significantly improve the performance of high bit rate modulation techniques, such as 4096-QAM. Nonlinear amplifiers can cause a range of impairments, including intermodulation, harmonic distortion, and amplitude compression, which can affect the transmitted signal quality. It is essential to minimize the effects of these impairments through proper design and optimization of the amplifier to ensure the highest quality possible of the transmitted signal. In this paper, M-QAM with nonlinear amplifier system design and implanted with MATLAB Simulink where in terms of Transmitted and Received spectrum signal and constellation diagram and calculated error vector magnitude (EVM) and modulation error ratio (MER) measurements for 1024, 2048, and 4096-QAM that used in WiFi 6, WiFi 6E, WiFi 7, respectively.

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An Introduction on Millimeter Wave Communications

Huang

2019

Wiley 5G Ref

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In the past few years, millimeter wave (mmWave) communication has attracted significant attention both from industry and academia, due to the large available spectrum at mmWave frequency bands. With the significantly increased communication bandwidth, mmWave communication is able to achieve tremendous data rate (e.g. on the order of dozens of Gbps) to satisfy the ever‐increasing traffic demand in 5G‐and‐beyond wireless networks. This article aims to give an introductory overview on the fundamentals of mmWave communication, including the general background of mmWave systems, the propagation characteristics of mmWave channels, followed by the design of hybrid antenna architecture to balance the trade‐off between the hardware cost and the system performance. The state of the art for the design of hybrid precoding/combining and channel acquisition for mmWave systems will be highlighted.

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An Overview of China Millimeter-Wave Multiple Gigabit Wireless Local Area Network System

Cited by 9 publications

References 32 publications

Maritime Intelligent Monitoring System Based on Wireless Sensor Network and Construction of Shipping Legal System

Maritime Intelligent Monitoring System Based on Wireless Sensor Network and Construction of Shipping Legal System

Nonlinear Amplifier Effect on High Bit Rate Modulation Techniques Used in WiFi Generation with MATLAB Simulink

An Introduction on Millimeter Wave Communications

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