PPT-(Modulation) Data Transmission And Digital Communication

Lecture 2 20191440 By Elham Sunbu OUTLINE Modulation Analog Modulation AM FM PM Digital Modulation Modulation Operation of varying amplitude frequency or phase of carrier signal accordingly with the instantaneous amplitude of the message signal. COMMUNICATION. SWAPNIL UPADHYAY. Scope of digital communication. Internet. Mobile Networks. Wireless Networks. Our interest. Arduino Shields. Use SPI or UART to communicate with . arduino. Husheng Li. The University of Tennessee. Course Contents. Basics of communications. Signals and noise. Amplitude modulation. Phase and frequency modulations. Pulse modulation. Analog communication system. George-. Cosmin. Dr inż. Zdzisław Pólkowski. Communication System. CONTENTS. . Definition;. . Characteristic of communication . system;. . Parts of Communication system;. . Pulse code modulation;. Dr. Ghazi Al Sukkar. email: . ghazi.alsukkar@ju.edu.jo. webpage: . www2.ju.edu.jo/sites/acadimic/ghazi.alsukkar. . COMMUNICATIONS2 (EE422). Course . Information:. Instructor: Dr. Ghazi Al Sukkar.. Email: . 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 . Audio/video signals are . analog. in nature. Analog signals can take . infinite. number of values. Hence more difficult to detect at receiver after noise corruption. PCM converts analog signals to digital pulses. . Transmission Basics - Aseel AlHadlaq. Data vs Signal. Data – information formatted in human/machine readable form . examples: voice, music, image, file . Signal – electric or electromagnetic representation of data . Announcements and Outline. Recap. Physical Layer. Circuits/Media. Outline. Physical Layer. Digital Transmission (Digital Data). Analog Transmission (Digital Data). Digital Transmission (Analog Data). Binary modulation schemes . ASK. , FSK, . PSK. n. = . 1, . M = 2 (Only Two . output conditions are . possible). Baud . is equal to . the bit . rate. M-. ary. Modulation Techniques. QPSK, 8-PSK, 18-PSK, QAM, 16-QAM. 2. nd. . semester . 1439-1440. 205NET CLO. 1-Introduction to Communication Systems and Networks architecture OSI Reference Model.. 2- Data Transmission Principles. 3- Transmission medias. 4- Data modulation and encoding. Example: ASK, FSK, PSK, QAM. Binary digital modulation. Multilevel digital modulation. Amplitude Shift Keying. Binary-ASK --- BASK. Or On-Off Keying OOK. Uses two amplitude levels for the modulated carrier . First and second generation communication systems . divide. the total available bandwidth into smaller bandwidth channels . However, third generation systems . share. the entire bandwidth without mutual interference. 1. http://www.gaussianwaves.com/2012/05/performance-comparison-of-digital-modulation-techniques/. Note: M=2^m.