1st Unit

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SLMtitle.png Video Broadcasting

Chapter Outline

  1. Introduction
  2. Objectives
  3. Literature Survey
  4. Conclusion

SLMinto.png Introduction

Digital Video Broadcasting (DVB) standard is design for the mobile television [1]. Satellite is a way to transmit several DVB signal. One of them is Digital Video Broadcasting—Handheld (DVB-H) [1] that is most important for multimedia services like television can be received with mobile devices. It is a challenging opportunity to achieving fast data rates in wireless networks and power-limitation in mobile devices for the purpose of efficient use of bandwidth used single frequency networks (SFN). The meaning of the mobile television is television watched on a small mobile device. It may be a paid service that broadcast by the 3G cellular network (fixed network) to the mobile devices or mobile handheld devices. A base station handles all the mobile devices that receive signal by base station controller. Mobile television is one of the features provided by the 3G network services. South Korea in 2005 became the first country in the world to have mobile TV. Today, South Korea and Japan are developing sector for the mobile devices. Mobile Device services were launched by the operator CSL in Hong Kong, March 2006, on the 3G network. Also in 2006 Germany, Italy and US also introduce our 3G network services for mobile television [2]. In 1998 project started for commercial terrestrial digital television services in Europe. After that in 2000, research motivate for the television in mobile devices is possible by DVB—T sponsored by EU. After that EU-sponsored Multimedia Car Platform (MCP) project in 2002 for the receiver to access DVB-T signals broadcast for fixed receivers. Later in 2007 Singapore and Germany cities see that DVB-T shows sufficient flexibility for the mobile devices [2] [3]. For the high-speed, high data-rate reception of IP (Internet Protocol) services for the mobile devices used Digital Video Broadcast—Handheld (DVB-H), DVB-H have reliability, scalability, unique transmission power, screen size, coverage requirements. DVB-H is a technology, which is a combination of service information, elements of the physical layer and data link layer [2]. This technology also has some advance features at the data link layer level likes time-slicing and forward error correction techniques (FEC). Which is use-full for the mobile devices in terms of energy saving is critical to battery-powered mobile devices, and recent commercial mobile TV chips consume more than 400 mW in continuous mode and continuous receive burst both handle by the time-slicing and forward error correction is to improve the Doppler performance in mobile channels and to improve the tolerance to impulse interference.

SLMobj.png Learning Objectives
After reading this chapter, you are expected to learn about:

The relation of on/off depends to achieve maximum power saving. In DVB-H stream if there are approximately ten or more bursts, up to 90% of energy saving rate from the front end. DVB-H is a technical system which was carefully tested by the DVB-H Validation Task Force [5]. DVB-SH (Satellite services to Handheld) improved radio performances and can be seen as an evolution of DVB-H. For the stationary use initially designed DVB-T, during the field trials in mobile reception it showed an exceptional performance. However, when it use for the mobile devices, there is a series of requirements that have to be satisfied. For the mobile DVB receives limited battery life is a crucial issue, Supported to wireless devices. A mobile device should operate in a network which allows and assists handovers, Processing power, Improve mobile reception, Efficient 4K OFDM transmission mode, 4MHz to 6MHz channel bandwidth, Multiple band’s operation; used for the Ultra High Frequency (UHF), Impulse noise, Advance Transmission Parameters Signaling (TPS) check additional bits to measure the presence of DVB-H services and the efficient use of MPE-Forward Error Correction, Time-slicing: use for the mobile devices in terms of energy consumption is critical to battery-powered mobile devices, and recent commercial mobile TV chips consume more than 400 mW in continuous mode and continuous receive burst.



SLMsum.png Results

SLMkp.png Key Points

The key points of this chapter are as follows:

SLMgloss1.png Glossary

SLMtest1.png Practice Test

SLMfeedb.png Answers to SAQs

SLMref.png References and Further Readings