By Tri T. Ha
Supplying the underlying ideas of electronic verbal exchange and the layout concepts of real-world structures, this textbook prepares senior undergraduate and graduate scholars for the engineering practices required in undefined. masking the middle recommendations, together with modulation, demodulation, equalization, and channel coding, it offers step by step mathematical derivations to help realizing of historical past fabric. as well as describing the fundamental thought, the foundations of approach and subsystem layout are brought, allowing scholars to imagine the complicated connections among subsystems and know the way every one point of the layout helps the general objective of attaining trustworthy communications. in the course of the e-book, theories are associated with sensible functions with over 250 real-world examples, while 370 diversified homework difficulties in 3 degrees of trouble increase and expand the textual content fabric. With this textbook, scholars can know how electronic verbal exchange structures function within the genuine international, how one can layout subsystems, and review end-to-end functionality comfortably and self belief.
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Additional info for Theory and Design of Digital Communication Systems
9 Bibliography * * * * * * Measuring and establishing the required signal-to-noise ratio for a given communication coverage: Chapter 5. Sending the message based on the required signal-to-noise ratio and bandwidth: Chapter 6. Receiving the message and providing the best detection: Chapter 7. , spread spectrum modulation: Chapter 8. Pulse shaping and equalizing the effect of a bandlimited channel for modulated signals: Chapter 9. Dealing with sending and receiving signals over a mobile channel for previously discussed modulation techniques: Chapter 10.
For a given signal-to-noise ratio, an analog communication receiver attempts to reproduce the voltage baseband waveform with certain subjective ﬁdelity. On the other hand, for a given signal-to-noise ratio per symbol, a digital communication receiver produces symbols with a quantitative error rate. It is important to know in advance the lower bound of the signal-to-noise ratio per symbol for a speciﬁed error rate irrespective of the type and size of the set of modulation waveforms. In 1948 Claude Shannon established this lower bound and also provided the channel capacity for reliable transmission .
Thus, it is necessary to understand the mechanism that causes these unwanted effects and ﬁnd ways to mitigate them. A fading channel arises from the movement of the transmitter and receiver, commonly referred to as the time-varying effect or Doppler effect. This may cause random amplitude attenuation and random phase rotation of the signal space. In underwater acoustic communication, the medium also changes over time, further compounding the problem. A fading channel also exhibits a space-varying effect, where the locations of the transmitter and receiver and the physical structures in the environment dictate the paths that the signal may travel.
Theory and Design of Digital Communication Systems by Tri T. Ha