Power efficiency improvements through peak-to-average power ratio reduction and power amplifier linearization

Authors:
Ning Chen;G. Tong Zhou;Hua Qian
Affiliations:
Freescale Semiconductor, Inc., Austin, TX;School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA;Marvell Semiconductor, Inc., Santa Clara, CA
Venue:
EURASIP Journal on Applied Signal Processing
Year:
2007

Citing 6
Cited 1

Multicarrier modulation with low PAR: applications to DSL and wireless

Multicarrier modulation with low PAR: applications to DSL and wireless
RF Power Amplifiers for Wireless Communications, Second Edition (Artech House Microwave Library (Hardcover))

RF Power Amplifiers for Wireless Communications, Second Edition (Artech House Microwave Library (Hardcover))
Convergence of the complex envelope of bandlimited OFDM signals

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Optimality Condition for Selected Mapping in OFDM

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Performance analysis of peak power and band-limited OFDM system with linear scaling

IEEE Transactions on Wireless Communications
Improvement of power efficiency of HPA by the PAPR reduction and predistortion

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Prototype implementation of two efficient low-complexity digital predistortion algorithms

EURASIP Journal on Advances in Signal Processing

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Abstract

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 are well-known PAR reduction techniques. We propose to combine SLM with threshold clipping and digital baseband predistortion to improve the overall efficiency of the transmission system. Testbed experiments demonstrate the effectiveness of the proposed approach.