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  WLAN Wireless Network 02-Frequency, Channel, coding, Modulation

  The first part records the foundation of WLAN wireless network, this article writes about the communication foundation of WLAN. First of all, WLAN is a kind of radio communication technology, which should talk about the working frequency. Now the working frequency of WLAN is mainly concentrated in two main bands, 2.4GHz and 5GHz. Why

  Technology frequency band modulation spread spectrum signal transmission carrier frequency process channel wireless coding difference information data Chinese communication two basic that is 2022-06-01
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  The birth process of Wi-Fi

  The original title: "Today is World Wi-Fi Day!" "many people don't know that June 20 every year is actually World Wi-Fi Day: this special anniversary is held by the Wireless Broadband Alliance (Wireless Broadband Alliance).

  Wireless technology frequency band standards equipment the world that is spectrum communications alliance development spread spectrum companies manufacturers engineering time work different continuous products 2023-11-24
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  Huawei released the industry's first 2000Mbps all-optical network to achieve 2G bandwidth on-demand spread spectrum acceleration

  Thanks to CTOnews.com netizen Xiao Zhan for the clue delivery! CTOnews.com news on January 17, on January 16, Feng Zhishan, president of Huawei Optical access Product Line, announced "Huawei Xingguang B3" at the launch of new products of China Mobile e-Enterprise Group Network.

  Enterprise Network Huawei Smart Security experience Security support bandwidth all-Optical three solution Starlight Architecture one Button Mobile Industry China Mobile products advantages 2023-11-24
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  Analysis: the advantages and disadvantages of LoRa, an Internet of things transmission technology applied in low-power and long-distance scenarios

  Before evaluating the advantages and disadvantages of LoRa technology, we must first understand the background of the emergence of the technology. In essence, the purpose of LoRa technology is to create a physical layer wireless modulation method for long-distance communication links. Many traditional wireless systems use physical layer frequency shift keying (FSK) modulation because it is very efficient and low power consumption.

  Technology power consumption link budget modulation sensitivity wireless sensitivity transmission power application spread spectrum communication scene long distance transmission signal cost digital scheme 2022-06-02
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  3G 4G of Wireless Communication basic data collation 2

  Recently focused on the Internet of things NB-IOT technology, wireless communications this part of some basic concepts need to understand. This paper summarizes some basic concepts and external characteristics of wireless communication (GSM/WCDMA/LTE). As an individual (not a communications professional) to understand wireless communications

  Antenna communication frequency band signal technology network China support wireless cell interface wireless communication different channel multiple mobile phone data transmission multiplexing spread spectrum 2022-06-01
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  What is the application of spectrometer in EMC rectification?

  Spectrum analyzer in the EMC rectification and reform of the application is how, many novices are not very clear, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something. Foreword Spectrum Analyzer is electromagnetic interference (EMI)

  Testing Spectrum signal Analyzer Spectrum Analyzer rectification Spectrum Analyzer Power function clock following figure Harmonic Frequency Analysis Application Engineering engineer distortion Fault electromagnetic 2022-06-01
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  From R15 to R17, we can understand the technological innovation of 5G.

  In early June 2022, the 96th plenary session of the Communications Standards Organization (3GPP) was held in Budapest, Hungary as scheduled. At this meeting, the high-profile 3GPP R17 standard was officially frozen. This indicates that the first phase of the evolution of 5G has been completed.

  Technology Network Standard Foundation Communications Millimeter Wave Spectrum support scenario Mobility characteristics Industry aspect capability Application access Technology Innovation more Terminal Phase 2023-11-24
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  Samsung Electronics announces the establishment of a 6G research group in the UK

  CTOnews.com October 13, Samsung Electronics announced that it will set up a 6G research group at the Samsung Research Institute (SRUK) in London, UK, to focus on the development of 6G network and terminal technology. It is reported that Samsung Electronics has taken the lead from the stage of establishing the 6G vision.

  Samsung Electronics Samsung Electronics Research Technology Communications White skin White papers companies Communications Technology Spectrum Development next Generation Global Achievement goals Research Institute experience UK role 2023-11-24
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  What does nb-lot technology mean?

  Editor to share with you what nb-lot technology refers to, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to understand it! NB-IoT is narrowband Cellular Internet of things (N

  Technology power consumption network data equipment cellular wide area network battery features spectrum application support cost narrowband rate security life meter reading wireless time 2022-06-02
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  How does Tire pattern affect Tire noise, Acoustic principle

  Tire noise is an important factor affecting car comfort. Tire noise will not only interfere with the mood of drivers and passengers, but also cause noise pollution to the surrounding environment. Therefore, reducing tire noise is a common concern of both the automobile industry and consumers. This paper will introduce a novel way to reduce tire noise.

  Tires patterns sound frequency noise peak engineering pitch sequence intensity shape car threshold difference noise range problem spectrum design principle 2023-11-24
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  If the thickness of the atmosphere changes, is the sky still blue?

  Under the optical action of scattering, light encounters atmospheric molecules and countless suspended particles, changing the energy and direction and spreading in all directions. As a result, the clear sky is blue, the sunset is orange-red, the waves are rolling white spray, and every fluctuation in the micro world may cause thousands of colors of nature.

  Atmosphere sky wavelength sun atmosphere molecules intensity sunlight color light phenomena particles direction purple light blue light propagation blue that is effect white 2023-11-24
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  Telstra partnered with Ericsson and AWS to establish Cloud Innovation Center

  Ericsson and AWS announced overnight at the Mobile World Congress (MWC) in Barcelona that they will jointly research and launch a hybrid cloud center for global telecom service providers, and Telstra will be the first cooperative host. Ericsson's goal is to take advantage of AWS

  Ericsson Network Services Telecommunications Technology data Solutions Wireless Radio Australian University Solutions Australia Cooperation Security Enterprise Global Laboratories equipment experiments testing 2022-05-31
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  What are the common RF parameters in the Internet?

  This article mainly introduces what are the common RF parameters in the Internet, which can be used for reference. I hope you can learn a lot after reading this article. 1. Rx Sensitivity (reception sensitivity

  Signal transmit system power transmitter interference receiver noise cell useful user actual bandwidth index influence channel amplifier temperature demodulation modulation 2022-06-01
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  Application of Satellite remote Sensing Technology in Agriculture

  "the application of remote sensing in agriculture can help the evolution of agricultural practice face different types of challenges by providing information related to crop conditions of different sizes throughout the season. over the years, agriculture has had to meet a variety of needs, so there is a greater need for innovative solutions. in terms of remote sensing technology, since 1950

  Agriculture remote sensing technology satellites crops soil monitoring sensors farmers plants change energy health information help precision status images climate applications 2023-11-24
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  What does wcdma mean (what does the wcdma version mean)

  Hello everyone, Lin Fei to answer the above questions, what is the meaning of wcdma, what is the meaning of wcdma version, many people do not know, now let's take a look at it! When we buy a mobile phone, we choose a variety of parameters. When using the network of operators, we will also see that different operators have

  Network technology multiplexing standard Qualcomm communications different user signal wireless mobile that is code division multiple access operator China operation choice same mature not only 2022-05-31
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  20 misconceptions of wireless interference

  With the popularity of wireless devices and the increasing requirements for mobile applications, enterprises must diligently manage and plan the entire deployment. However, some wireless technologies and common electronic devices that have been put into use or emerging have affected the performance of wireless networks. Among them, RF interference is the main reason that affects the operation of wireless network.

  Interference device wireless problem network access point data influence signal statement error phone namely tool situation microwave frequency security voice 2022-06-01
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  Apple iPhone 15 Pro / Max exclusive new features + 1:Thread network technology

  CTOnews.com Sept. 13, Thread is an IPv6-based network protocol designed for low-power Internet of things (IEEE 802.15.4-2006 WPAN) devices, while Apple has just released iPhone

  Network Apple device power consumption mesh capability support technology product feature intelligence battery scale communication large security home mobile phone anti-interference fault 2023-11-24
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  AMD admits that the EPYC Rome server chip will crash after running for 1044 days.

  CTOnews.com June 4 news, AMD recently released in the EPYC 7002 "Rome" server chip guide, admitted that due to the existence of BUG clock countdown timer, resulting in the second generation of EPYC chip normal operation 1044 days later

  Server chip service mode kernel media guide clock time user technology or problem frequency run countdown small countdown timer reason depending on 2023-11-24
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  The street lamp hangs WiFi, the lamp is in the net.

  To enhance access to urban wireless networks, an international alliance created by Intel, Facebook, Nokia and other companies has come up with the idea of deploying Wi-Fi through streetlights. However, finding the most suitable location for an access point is not easy. Now, a new algorithm can help telecom companies select Ann.

  Signal research antenna wireless propagation city model height access location millimeter wave personnel situation technology access point receiver standard lamppost researcher system 2023-11-24
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  Motorola's marginal time-limited discount is $200

  The Motorola Edge 20 series was released at the end of July and will be launched soon. Pre-orders will begin on August 23. For a limited time, Motorola will also sell the device for $499 and reduce the price by $200. Motorola Edge is of high design quality, although the back is plastic.

  Motorcycle Lola Motorola sensors information pixels will be in support price camera time display limited equipment camera edge optics memory refresh rate original price 2022-05-31