Telecommunication Theory: Modulation, Digital Signal Processing, Stochastic Process, Bandwidth, Shannon-Hartley Theorem

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 48. Chapters: Modulation, Digital signal processing, Stochastic process, Bandwidth, Shannon-Hartley theorem, Intersymbol interference, Demodulation, Nyquist rate, Overmodulation, Channel, Message format, Matched filter, Hilbert-Huang transform, Noisy-channel coding theorem, Detection theory, Spectral efficiency, Channel capacity, Turbo equalizer, Frequency mixer, Phase fired controllers, Coherence, Raised-cosine filter, Trellis modulation, Nyquist ISI criterion, Pulse shaping, Blind equalization, Polar modulation, Relay channel, Demand Assigned Multiple Access, Analog transmission, Exformation, Shaping codes, Root-raised-cosine filter, Subharmonic mixer, Modulation order, Channel Division Multiple Access. Excerpt: In electronics and telecommunications, modulation is the process of varying one or more properties of a high-frequency periodic waveform, called the carrier signal, with a modulating signal which typically contains information to be transmitted. This is done in a similar fashion to a musician modulating a tone (a periodic waveform) from a musical instrument by varying its volume, timing and pitch. The three key parameters of a periodic waveform are its amplitude ("volume"), its phase ("timing") and its frequency ("pitch"). Any of these properties can be modified in accordance with a low frequency signal to obtain the modulated signal. Typically a high-frequency sinusoid waveform is used as carrier signal, but a square wave pulse train may also be used. In telecommunications, modulation is the process of conveying a message signal, for example a digital bit stream or an analog audio signal, inside another signal that can be physically transmitted. Modulation of a sine waveform is used to transform a baseband message signal into a passband signal, for example low-frequency audio signal into a radio-frequency signal (RF si...