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Baseband digital systems

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  • Reference subjects of digital information in English and fully understandable. This book was written to be a textbook for seniors or first - year graduate students interested in electrical communication systems. The book departs from the usual formata in two major respects. First, the text does not cover analog or pulse modulation systems.

    pdf207p binhbut 22-08-2010 190 98   Download

  • (BQ) Part 1 of the document Systems, modulation, and noise: Communications and principles has contents: Signal and linear system analysis, linear modulation techniques, angle modulation and multiplexing, principles of baseband digital data transmission, overview of probability and random variables,... and other contents. Invite you to refer.

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  • Transforming the information source to a form compatible with a digital system. Sampling. Aliasing. Quantization Uniform and non-uniform. Baseband modulation. Binary pulse modulation. M-ary pulse modulation. M-PAM (M-ary Pulse amplitude modulation).Assuming real time transmission and equal energy per transmission data bit for binary-PAM and 4-ary PAM

    ppt22p doanhung_dtvtk10 24-03-2013 43 7   Download

  • Digital & Analog Communication Systems (8th Edition) - Leon W. Couch introduce about digital and analog communication systems, with an emphasis on design. Readers will gain a working knowledge of both classical mathematical and personal computer methods to analyze, design, and simulate modern communication systems. MATLAB is integrated throughout.

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  • • Analog voice data must be translated into a series of binary digits before they can be transmitted in digital transmission system. One means of doing this is called pulse amplitude modulation (PAM). • The process of converting analog signal to digital is also known as A_to_D conversion or A/D conversion. The circuit does the conversion known as A/D converter. In analog modulation (continuous wave modulation), some parameter of a sinusoidal carrier wave is varied continuously in accordance with the message signal. ...

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  • Transforming the information source to a form compatible with a digital system -Sampling -Aliasing -Quantization -Uniform and non-uniform -Baseband modulation -Binary pulse modulation -M-ary pulse modulation -M-PAM (M-ay Pulse amplitude modulation)

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  • The second edition of this accessible book provides readers with an introductory treatment of communication theory as applied to the transmission of information-bearing signals. While it covers analog communications, the emphasis is placed on digital technology. It begins by presenting the functional blocks that constitute the transmitter and receiver of a communication system. Readers will next learn about electrical noise and then progress to multiplexing and multiple access techniques.

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  • Bài giảng "Truyền thông không dây - Giới thiệu" do Đặng Lê Khoa biên soạn trình bày các nội dung về: Giới thiệu hệ thống DCS (Digital Communication system); kênh truyền (Channel); định dạng và điều chế dải gốc (Formatting & Baseband modulation); bộ cân bằng, phân tập, và đan xen (Equalization, Diversity & Interleaving); mã hóa kênh (Channel coding); điều chế đa sóng mang (Multicarrier modulation); các kỹ thuật đa truy cập (Multiple Access Techniques); giới thiệu một số chuẩn trong truyền thông không dây.

    ppt7p nhq_khtn 12-03-2011 240 55   Download

  • Giới thiệu hệ thống DCS (Digital Communication system) Kênh truyền (Channel) Định dạng và điều chế dải gốc (Formatting & Baseband modulation) Bộ cân bằng, phân tập, và đan xen (Equalization, Diversity & Interleaving) Mã hóa kênh (Channel coding),

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  • All wireless communication systems have traditionally employed a radio frequency front end (RF FE) (see Figure 3.1), located between the antenna and the baseband subsystem, the latter commonly implemented with digital signal processing technology. While ‘pure’ software radios anticipate analog-to-digital conversion at the antenna, dispensing with the need for this element of the radio, today’s ‘pragmatic’ software defined radios (SDRs), still (and as will be seen later in this chapter, for the foreseeable future) require an RF FE and place stringent demands thereon....

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  • Modulation and Demodulation Modulation is a technique of imposing information (analog or digital) contained in a lower frequency signal onto a higher frequency signal. The lower frequency is called the modulating signal, the higher frequency signal is called the carrier, and the output signal is called the modulated signal. The benefits of the modulation process are many, such as enabling communication systems to transmit many baseband channels simultaneously at different carrier frequencies without their interfering with each other....

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