Nonlinear Predistortion with Reduced Peak-to-Average Power Ratio
نویسندگان
چکیده
This paper presents the extension of vector precoding, a generalization of the nonlinear TomlinsonHarashima precoding, with a PAPR (peak-to-average power ratio) reduction technique for the downlink of OFDM systems. The proposed algorithm exploits alternative transmit sequences arising from vector precoding to reduce the peak power in the time-domain baseband transmit signal. The operation is completely transparent to the receivers and therefore requires neither transmission of side information nor additional processing at the receiver side.
منابع مشابه
Power Efficiency Improvements through Peak-to-Average Power Ratio Reduction and Power Amplifier Linearization
Many modern communication signal formats, such as orthogonal frequency-division multiplexing (OFDM) and code-division multiple access (CDMA), have high peak-to-average power ratios (PARs). A signal with a high PAR not only is vulnerable in the presence of nonlinear components such as power amplifiers (PAs), but also leads to low transmission power efficiency. Selected mapping (SLM) and clipping...
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