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Peak-to-Average Power Reduction in Digital Television Transmitters

Overview Orthogonal Frequency Division Multiplexing (OFDM) is one of the modulation techniques used in digital video broadcasting systems. A significant disadvantage of OFDM is that it has a high peak-to-average power ratio (PAPR). This means that the output amplifiers of digital television transmitters must be designed to handle signals that are far in excess of the mean levels. These amplifiers are expensive. One way to reduce the PAPR is to digitally limit the peak value before the signals reach the amplifier. This paper describes the application of the most effective of these techniques to the European digital video broadcasting system.

Further White Paper Details
Publisher	La Trobe University	File Format	PDF
Date Published	March 2002	Downloads	3
Format	White Papers
Topics	Wireless LAN

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