PPT-Chapter 2: Time/Frequency analysis of communication signals and systems

Carrier is strong and stable sinusoidal signal xt A cos w c t q Carrier transports information audio video text email across the world Why is the carrier required Audio and video signals cannot travel over large distances since they are weak. Stochastic processes Probability theory random processes power spectral dens ity Gaussian process Modulation and encoding Basic modulation techniques and binary data transmission AM FM Pulse Modulation PCM DPCM Delta Modulation Information theory In . Group B. Ali . Qasim. Haris. . Suhail. Imaan. Tariq. Mohsin. . Zafar. Arsalan. . Hameed. Abdul . Rahman. . Rida. . Zainab. Ehsanullah. . Zafar. Hassan . Iqbal. Amna. Aziz. Manal. Fatima. Qambar. Analog and Digital. Analog and Digital Data & Signals. Periodic & Aperiodic Signals. Contents. Information can be voice, image, numeric data, characters or any message that is readable and has meaning to the destination . Analog and Digital. Analog and Digital Data & Signals. Periodic & Aperiodic Signals. Contents. Information can be voice, image, numeric data, characters or any message that is readable and has meaning to the destination . Modulation: embedding an information-bearing signal into a second signal. e.g. . purposes :. locate the signal on the right band of the spectrum. multiplexing : simultaneous transmission of more than . Modulation: embedding an information-bearing signal into a second signal. e.g. . purposes :. locate the signal on the right band of the spectrum. multiplexing : simultaneous transmission of more than . Types of communication systems. Coaxial (Wired). Microwave (Wireless). Satellite (Wireless). Cable (Wired). Cellular (Wireless). Technology that links the world. Coaxial. Courtesy: . customer.xfinity.com. analysis of communication signals and systems . Carrier signal . is strong and stable sinusoidal signal . x(t) = A cos(. w. c . t . q. ). Carrier transports . information. (audio, video, text, email) across the world. Instructor: . Dr. Ghazi Al Sukkar. Dept. of Electrical Engineering. The . University of Jordan. Email: . ghazi.alsukkar@ju.edu.jo. 1. Fall 2014. 2. Course Details. Objective. Establish a background in Signal and System Analysis. Systems. Dr. Babul Islam. Dept. of Applied Physics and Electronic Engineering. University of Rajshahi. 1. Outline . Response of LTI system in time domain. Properties of LTI systems. Fourier analysis of signals. Overview. Communication is a battle between signal and noise/distortion. Chapter 1 . Summary. Information representation. Communication system block diagrams. Analog versus digital systems. Performance metrics. Chapter-2 : Signals & Systems . Review. Marc Moonen & . Toon. van . Waterschoot. Dept. E.E./ESAT-STADIUS, KU Leuven. marc.moonen@kuleuven.be. www.esat.kuleuven.be. /. stadius. /. Chapter-2 : Signals & Systems Review. 1. Multiplexing. Multiplexing. process . allows several transmission sources to share a larger transmission capacity. .. multiple . links on 1 physical line. Most common use of multiplexing is in long-haul communication using coaxial cable, microwave and optical . School of Electrical . Engineering. DHA Suffa University, Karachi, Pakistan. email: . imtiaz.hussain@faculty.muet.edu.pk. URL :. http://imtiazhussainkalwar.weebly.com/. Lecture-1. Introduction. Note: .