PPT-Table 1: Theoretical BER over AWGN for various bandwidth-efficient linear digital modulation

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Table 1: Theoretical BER over AWGN for various bandwidth-efficient linear digital modulation: Transcript

1 httpwwwgaussianwavescom201205performancecomparisonofdigitalmodulationtechniques Note M2m. Husheng Li. The University of Tennessee. Phase and Frequency Modulation. Consider the standard CW signal. We define the total instantaneous angle. Phase and Frequency Modulation. Phase modulation (PM). (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). Exchange of information from point A to point B. 100001101010001011101. 100001101010001011101. Transmit. Receive. Wireless Communication. Exchange of information from point A to point B. 100001101010001011101. 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 . Techniques . ( 24 marks). Visit for more Learning Resources. Transmission Techniques. Baseband . Transmission . The electrical equivalent of original information is known as the . baseband signal. . 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. Operated by Los Alamos National Security, LLC,. for the U.S. Department of Energy. Nikolai . Yampolsky. Future Light Sources Workshop. March 8, 2012. Slide . 2. FEL seeding. FEL mode couples electron bunching and radiation. Therefore, FEL can be seeded either by the coherent radiation or by beam bunching at the resonant wavelength.. 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. Announcements. Schedule changes next week. No lecture next Tues 2/3.. Makeup class: Wed 2/5 11:30-12:50pm w/lunch in Gates B03. Project proposals due 2/7; I can provide early feedback. MT week of 2/17, 6-8pm (pizza after), poll this week; details . 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 . 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.

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