PPT-From AM Radio to Digital I/Q Modulation

Author : bety | Published Date : 2023-12-30

COS 463 Wireless Networks Lecture 12 Kyle Jamieson Parts adapted from H Balakrishnan M Perrott C Terman Analog IQ modulation Discretetime processing of continuous

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From AM Radio to Digital I/Q Modulation: Transcript

COS 463 Wireless Networks Lecture 12 Kyle Jamieson Parts adapted from H Balakrishnan M Perrott C Terman Analog IQ modulation Discretetime processing of continuous signals The Digital Abstraction. May . 2, . 2013. Presented by. :. Syllabus. 1. What is Amateur Radio?. 2. What Hams do with Amateur Radio. 3. How to Become a Radio Amateur. 4. Your First Station. 5. Why Join a Local Club? . What is Amateur Radio?. Anoka County Radio Club and Emergency Services, Inc.. 01-Apr-2016 . Shep. . Shepardson. N0NMZ. Amateur Radio Digital Standards. D-STAR from . Icom. Digital Smart Technologies for Amateur Radio. . 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 . 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. 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. Modulation is the process of encoding the baseband or source information (voice, video, text) in a manner suitable for transmission.. It generally involves translating a baseband signal (or source) to a band pass signal, centered at a high carrier frequency.. 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 . 2016-02-25. Istanbul.tk. Digital Radio Mondiale. DRM – Key Facts. • . Global . standard. for terrestrial Digital Radio. • . Enables local, regional, national, international . coverage. (in broadcast bands AM & FM/VHF). 1. http://www.gaussianwaves.com/2012/05/performance-comparison-of-digital-modulation-techniques/. Note: M=2^m. Prof. Brian L. Evans. Dept. of Electrical and Computer Engineering. The University of Texas at Austin. 15 - . 2. Introduction. Digital Pulse Amplitude Modulation (PAM). Modulates digital information (symbols) onto amplitude of pulse. GRE-90-23 and GRE-90-35. Rationale for introducing a new pulse modulations. Frame . length. : 4.16. ms. = 217Hz . Slot length: 577µs. This corresponds to PM (217Hz, 577µs)!. Conclusion:. PM1 (217Hz, 577µs) is suitable to emulate 2G..

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