NDLI: Baseband predistortion techniques for M-QAM transmission using non-linear power amplifiers

Content Provider	IEEE Xplore Digital Library
Author	Thai Hoa Vo Tho Le-Ngoe
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que., Canada (Thai Hoa Vo; Tho Le-Ngoe)
Abstract	This paper presents a combined table look-up and polynomial-based predistortion (TLPPD) scheme for M-QAM transmission using non-linear power amplifiers. By applying a table look-up approach, the overall AM/AM and AM/PM distortion characteristics of the amplifier are divided into a small number of segments so that the non-linear behavior of each segment can be modeled by polynomials of lower order. As a result, the proposed scheme can offer both reduced complexity and faster convergence while maintaining the required accuracy as compared to the table look-up and polynomial-based techniques. Performance evaluation using simulation and experiments is presented. Power spectra and out-of-band emission of M-QAM systems using the proposed scheme and nonlinear power amplifier to achieve both high power and bandwidth efficiencies are also examined by simulation and experiments. Results indicate that the proposed scheme is suitable for applications of bandwidth-efficient M-QAM to PCS systems using non-linear amplifiers.
Starting Page	687
Ending Page	691
File Size	509566
Page Count	5
File Format	PDF
ISBN	0780379543
ISSN	10903038
DOI	10.1109/VETECF.2003.1285106
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-10-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Baseband Predistortion Power amplifiers Polynomials Nonlinear distortion Power system modeling Convergence High power amplifiers Bandwidth Personal communication networks
Content Type	Text
Resource Type	Article

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