UT Arlington EE 5359 - Digital Media Broadcasting (27 pages)

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Digital Media Broadcasting



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Digital Media Broadcasting

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Pages:
27
School:
University of Texas at Arlington
Course:
Ee 5359 - Topics in Signal Processing
Topics in Signal Processing Documents

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Lecture B Digital Media Broadcasting ISPACS 2005 Tutorial C C Jay Kuo Department of Electrical Engineering University of Southern California Outline Digital Audio Broadcasting DAB DAB history and current status Technology inside DAB Future develop direction Digital Video Broadcasting DVB History of DVB project DVB worldwide DVB H DVB handheld Comparison of DAB and DVB Conclusion 1 Outline Digital Audio Broadcasting DAB DAB history and current status Technology inside DAB Future develop direction Digital Video Broadcasting DVB History of DVB project DVB worldwide DVB H DVB handheld Comparison of DAB and DVB Conclusion Analog Audio Broadcast Amplitude Modulation AM from 1920s Frequency Modulation FM from 1950s 2 Digital Audio Broadcast DAB Advantages Higher fidelity Greater noise immunity New services Receive radiotext such as song title traffic updates Can use radio card to hear DAB with PC DAB History Europe Eureka 147 Founded in 1987 Aiming to develop and define the digital broadcast system 1992 L and S bands allocated to DAB 1995 WorldDAB forum established 1997 Market introduction of DAB in most European countries 2000 70 80 population in Europe covered by DAB The United States Evolution of DAB receiver HD RadioTM Technology Only approved DAB standard in U S 2nd fast growing industry after mp3 player with an annual growth of 444 in 2003 Available at www worlddab org images eureka leaflet pdf 3 DAB Worldwide Available at http www worlddab org images World map 2004 pdf DAB Benefit Enhanced sound fidelity Improved delivery and reception Upgraded audio quality Digital FM with current CD quality Digital AM with current FM quality Seamless conversion from analog to nextgeneration digital broadcasting for radio stations Added value system features Text graphics and still image transfer 4 Overview of DAB System Stations bundle analog and digital audio signals with textual data such as artist and song information weather and traffic and more The digital signal layer is



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