PPT-Chapter 4: Second generation Systems-Digital Modulation

Audiovideo 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. By Brittany Pitkin. Book Information. Author: Mark Bauerlein. Published in . 2009. Bauerlein makes . . conclusions about . . . Generation Y. Generation Y. Also known as the Millennials . Born in 1984-2002. Tinoosh. . Mohsenin. CMPE . 650. Spring . 2013. Today. Administrative items. Syllabus . and course overview. Digital . systems and optimization overview. 2. Course Communication. Email. Urgent . announcements. Analog data to analog signal. (AM, FM, PM). Digital data to analog signal. (ASK, FSK, BPSK, QAM). Analog data to digital signal. (PCM, DM). Digital data to digital signal. (line codes). Signal Encoding Techniques (modulation and encoding). Dr. Mohamed Bingabr. Chapter 1. Introduction. ENGR 4323/5323. Digital and Analog Communication. Why Communication. Communication advances society’s development.. Before. . modern time . verbal messages were carried by runners, carrier . Amplitude Modulation (AM). Time domain equation. y. AM. (t. ) = . Information or message x carrier. . = . m(t) . x A cos(w. c. t. ). . Frequency domain equation. Double . sideband . Digital. . Modulation. Announcements:. Slides from . Cioffi. guest lecture posted. . HW 1 solutions posted, graded HWs available soon.. Review . of Lecture 8 (last Wednesday). AM Radio Modulation and Demodulation. 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. Jarrod Steinmetz. Who are they?. Who are they?. Digital natives and the Net generation (. Bittman. et al, 2011). Natural aptitude to technology. Proficient at using it. Never been in a world without . Jarrod Steinmetz. Who are they?. Who are they?. Digital natives and the Net generation (. Bittman. et al, 2011). Natural aptitude to technology. Proficient at using it. Never been in a world without it. Lecture 2– 2019/1440. 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.. 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. 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.