Transmission media

Xem 1-20 trên 66 kết quả Transmission media
  • Tham khảo tài liệu 'kỹ thuật viễn thông - chương 12: môi trường truyền định hướng(guided transmission media)', kỹ thuật - công nghệ, kĩ thuật viễn thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf11p vuilaai 26-01-2011 158 31   Download

  • The following will be discussed in this chapter: Transmission media, transmission media classification, transmission media characteristics and design specifications, guided and unguided media, wireless transmission frequencies, antennas, wireless propagation.

    ppt50p deja_vu7 10-05-2018 8 3   Download

  • Lecture Wireless and mobile computing – Chapter 5: Wireless transmission media. The following will be discussed in this chapter: Wireless transmission, wireless transmission examples, terrestrial microwave, satellite microwave, broadcast radio, infrared, wireless transmission systems comparison, wireless propagation modes.

    ppt41p deja_vu7 10-05-2018 11 5   Download

  • Guided media, which are those that provide a conduit from one device to another, include twisted-pair cable, coaxial cable, and fiber-optic cable.

    ppt31p trada85 22-01-2013 42 5   Download

  • Lecture Wireless and mobile computing – Chapter 7: Transmission Fundamentals review Q/A. The following will be discussed in this chapter: Transmission media, guided unguided media, transmission media, microwave transmission, direct broadcast satellite, multiplexing, FDM TDM.

    ppt45p deja_vu7 10-05-2018 9 1   Download

  • Viba mặt đất: là đĩa Parabol, kích thước khoảng 10 feet, để định hướng sóng Ăngten phát – thu được đặt cố định và được lặp đặt ở độ cao để không bị vật cản. Khi không có vật cản, khoảng cách thu K .h (Km) ; d: được: d  7.14 khoảng cách (Km), h: độ cao, K: hằng số để tính sự phản xạ hoặc hấp thụ do bề mặt trái đất cong với sự truyền lan đến điểm thấy 4 . Nếu h = 100 m thì được: Kopt= 3 d  133  82Km ....

    pdf5p vuilaai 26-01-2011 92 22   Download

  • Guided - wire Unguided - wireless Characteristics and quality determined by medium and signal For guided, the medium is more important For unguided, the bandwidth produced by the antenna is more important Key concerns are data rate and distance

    ppt27p trada85 18-01-2013 42 6   Download

  • After explaining some ideas about data and signals and how we can use them efficiently, we discuss the characteristics of transmission media, both guided and unguided, in this chapter. Although transmission media operates under the physical layer, they are controlled by the physical layer.

    ppt31p tangtuy04 12-03-2016 20 1   Download

  • Chapter 7 - Transmission media. In this chapter we discuss different kinds of transmission media, their use, and their advantages and disadvantages. After reading this chapter, the reader should: Understand the difference between guided and unguided media, be familiar with twisted-pair cable and the rationale for twisting, be familiar with shielded twisted-pair cable and the rationale for shielding, be familiar with coaxial cable, understand how the air (or vacuum) can be a transmission medium for signals.

    ppt18p nhanmotchut_2 19-10-2016 20 1   Download

  • Lecture Basic network management - Chapter 4: LAN terminology and components. After studying this chapter you will be able to understand: LAN Terminology, LAN transmission media, LAN technology and topology, LAN networking devices.

    ppt53p nhanmotchut_3 20-10-2016 35 1   Download

  • The following will be discussed in this chapter: Signals for conveying information, time domain concepts, frequency domain concepts, relationship between data rate and bandwidth, analog and digital data transmission, analog and digital data, analog and digital signaling, analog and digital transmission, channel capacity, transmission media.

    ppt51p deja_vu7 10-05-2018 7 1   Download

  • Transmission Basics In data networking, transmit means to issue signals to the network medium Transmission refers to either the process of transmitting or the progress of signals after they have been transmitted

    ppt51p doanhung_dtvtk10 19-03-2013 49 9   Download

  • In this section, we see how we can represent digital data by using digital signals. The conversion involves three techniques: line coding, block coding, and scrambling. Line coding is always needed; block coding and scrambling may or may not be needed.

    ppt71p trada85 22-01-2013 40 7   Download

  • Digital-to-analog conversion is the process of changing one of the characteristics of an analog signal based on the information in digital data.

    ppt36p trada85 22-01-2013 35 6   Download

  • Whenever the bandwidth of a medium linking two devices is greater than the bandwidth needs of the devices, the link can be shared. Multiplexing is the set of techniques that allows the simultaneous transmission of multiple signals across a single data link. As data and telecommunications use increases, so does traffic.

    ppt58p trada85 22-01-2013 37 5   Download

  • Simplex One direction e.g. Television Half duplex Either direction, but only one way at a time e.g. police radio Full duplex Both directions at the same time e.g. telephone

    ppt33p trada85 18-01-2013 29 4   Download

  • An event—be it a networking gathering, open house, fundraiser, or class—is by nature, a social affair. People attend to connect, interact, and share with their peers. People join social media networks such as Facebook, Twitter, and LinkedIn to connect, interact, and share with their peers. Sound familiar? Given their similar natures, it makes perfect sense to use social media to help plan, promote, and build excitement for any public event you’re hosting.

    pdf9p giamdocamnhac 06-04-2013 40 4   Download

  • Tham khảo sách 'healthy media, vibrant societies - how strengthening the media can boost development in sub-saharan africa', văn hoá - nghệ thuật, báo chí - truyền thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf62p thamgiacongdong 02-05-2013 20 2   Download

  • Bài giảng Computer Networks 1 (Mạng Máy Tính 1): Lecture 2 do Dr. Phạm Trần Vũ biên soạn bao gồm những nội dung về tTheoretical basis for data communication, Guided transmission media, Wireless transmission, Digital subscriber lines, Internet over TV cables.

    pdf35p cocacola_17 09-12-2015 28 1   Download

  • The content in chapter 5 explain basic data transmission concepts, including full duplexing, attenuation, latency, and noise; describe the physical characteristics of coaxial cable, STP, UTP, and fiber-optic media; compare the benefits and limitations of different networking media;...

    pdf20p kiepnaybinhyen_02 29-12-2015 14 1   Download


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