This article presents a strategy for enhancing efficiency in power amplifiers (PAs) by combining digital predistortion (DPD) linearization and clipping strategies for orthogonal frequency division multiplexing signals in a WiMAX scenario. On the one hand, by reducing the peak-to-average power ratio
An Efficient Predistorter Design for Compensating Nonlinear Memory High Power Amplifiers
โ Scribed by Sheng Chen
- Book ID
- 114600812
- Publisher
- IEEE
- Year
- 2011
- Tongue
- English
- Weight
- 846 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0018-9316
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๐ SIMILAR VOLUMES
In digital radio systems, high data transmission rates require the use of spectrally efficient linear modulation techniques; however, these techniques are generally sensitive to nonlinearity caused by the high-power amplifier (HPA) employed in transmitter systems. The nonlinearity of HPA is potentia
## Abstract In this study, a special inverted Doherty topology and uneven power drive methods are proposed to optimize the efficiency and appropriate load modulation. The amplifier is optimized at large power backโoff. The power added efficiency and adjacent channel leakage ratio (ACLR) are 33.1% a
Digital Predistorter is a cost-effective solution to compensate for the nonlinear distortions appearing in the RF power amplifiers (PAs). The indirect learning scheme is widely implemented because of its flexibility to eliminate the requirement for building a closed-loop real time system, which dram