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• W2141581595 abstract "High power efficiency is an important requirement in cellular transmitter radios. OFDM systems require very linear transmission because of high peak-to-average-power-ratio (PAPR). However, linear power amplifiers (PA) have very low efficiency. To enhance the power efficiency, non-linear PAs are applied and even forced to work near the saturation point. This generates inevitably huge non-linear distortion and spectrum regrowth. In this paper we propose a novel scheme to enhance the power efficiency of the mobile OFDM radio using polynomial-based pre-distortion and post-compensation. We estimate both the non-linearity and inverse non-linearity of the RF transmitter modeled by a memory-less polynomial with the least square error (LSE) method. These parameters can then be used to either construct a closed-form pre-distorter or easily generate the post-compensation signal to cancel the non-linear distortion at the RF output." @default.
• W2141581595 created "2016-06-24" @default.
• W2141581595 creator A5022036146 @default.
• W2141581595 creator A5049801414 @default.
• W2141581595 date "2003-06-25" @default.
• W2141581595 modified "2023-09-26" @default.
• W2141581595 title "Enhanced power efficiency of mobile OFDM radio using predistortion and post-compensation" @default.
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• W2141581595 doi "https://doi.org/10.1109/vetecf.2002.1040335" @default.
• W2141581595 hasPublicationYear "2003" @default.
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