콘텐츠 본문
논문 해외 국제전문학술지(SCI급) A lookup-table-based digital predistortion technique with iterative adaption of feedback samples
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2016-11
- 저자명 Jeong E.-R.공동(참여),Lee K.-P.
- 학술지명 Information (Japan)
- 발행처명 International Information Institute Ltd. No. 509 Fujimi-Cho 6-64-3 Tachikawa City, Tokyo 190-0013
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 2
논문 초록 (Abstract)
A new digital pre-distortion (DPD) technique with low memory requirements is proposed for linearizing power amplifiers (PAs). Lookup table (LUT) and Polynomial methods are two popular techniques to determine DPD parameters. LUT DPD is simpler to implement but needs a longer convergence time than the polynomial DPD, leading to longer feedback samples. Thus, LUT DPD requires a large memory for storing long feedback and transmitted samples, which increases hardware complexity and cost. To solve this problem, we propose a new LUT DPD technique that iteratively utilizes a short feedback and transmit samples. The experimental results show that the proposed technique can linearize the commercial PA better than the conventional technique, as the former requires only 30 times shorter feedback memory than the latter.
