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2007
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Peak to Average Power Reduction for Low-Power OFDM Systems

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Peak to Average Power Reduction for Low-Power OFDM Systems
— For Orthogonal Frequency-Division Multiplexing (OFDM) systems, Peak to Average Power Ratio (PAPR) can be a major impediment to efficient transmission due to the need to use inefficient highly linear amplifiers. This paper presents an iterative algorithm to reduce the PAPR of a low-power OFDM system by 3 dB at a clipping probability of 10−2 , and over 5 dB for 10−5 with asymptotically no loss in code rate for low signal to noise ratios (SNR). The reduced PAPR allows the system to use a more efficient form of linear amplifier, for an overall reduction in transmitter power consumption by over a factor of three at low SNR. In addition, the algorithm does not require any side information to be transmitted to the receiver to allow decoding.
Everest W. Huang, Gregory W. Wornell
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where ICC
Authors Everest W. Huang, Gregory W. Wornell
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