A new wideband adaptive digital predistortion technique employing feedback linearization
SCIE
SCOPUS
- Title
- A new wideband adaptive digital predistortion technique employing feedback linearization
- Authors
- Kim, J; Woo, YY; Moon, J; Kim, B
- Date Issued
- 2008-02
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGI
- Abstract
- We develop a new wideband digital feedback predistortion (WDFBPD) technique for modulated signals with wide bandwidths by combining digital feedback predistortion (DFBPD) linearization and memory-effect compensation techniques. For the experiments, a class-AB amplifier using an LDMOSFET with 90-W peak envelope power is employed. The proposed technique is compared with existing DFBPD and memory polynomial (MP) techniques for a 2.14-GHz forward-link WCDMA 2FA signal with 10-MHz carrier spacing. The experimental results show that the new WDFBPD technique has better linearization performance than conventional DFBPD and lower computational complexity than the MP technique.
- Keywords
- memory effects; power amplifier (PA); predistortion (PD); wideband code division multiple access (WCDMA); RF POWER-AMPLIFIERS; MEMORY; TRANSMITTERS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22933
- DOI
- 10.1109/TMTT.2007.914362
- ISSN
- 0018-9480
- Article Type
- Article
- Citation
- IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 56, no. 2, page. 385 - 392, 2008-02
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