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2007
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Peak-to-Average Power Ratio Reduction in an FDM Broadcast System

9 years 5 months ago
Peak-to-Average Power Ratio Reduction in an FDM Broadcast System
Digital predistortion is a technique used to reduce the signal dynamic range in a multichannel system in order to improve power amplifier (PA) efficiency. These techniques have been developed for orthogonal frequency-division multiplexing (OFDM) systems, but are not directly applicable to general frequency-division multiplexing (FDM) systems such as those used in broadcast. A modification to the tone injection approach allows constellation translations to be directly applied at the digital intermediate frequency (IF) domain and provides redundancy in lowering peak-toaverage ratio (PAR). Simulation of a 24-channel 256-QAM FDM cable television transmission system shows a 3.3 dB PAR reduction at 10-6 clipping probability.
Zhengya Zhang, Renaldi Winoto, Ahmad Bahai, Borivo
Added 04 Jun 2010
Updated 04 Jun 2010
Type Conference
Year 2007
Where SIPS
Authors Zhengya Zhang, Renaldi Winoto, Ahmad Bahai, Borivoje Nikolic
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