상세정보
학술대회
Additional Data Transmission Scheme Using TxID Signal for ATSC System
- 발행일
- 201003
- 출처
- International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB) 2010, pp.1-3
- 협약과제
- 09MR5600, 지상파 DTV 전송효율 고도화 기술개발, 김흥묵
- 초록
- It is well known that high power amplifier (HPA) induces nonlinear distortion around its saturation region. It causes the inter-modulation distortion (IMD) and spectrum re-growth problems. Thus, the digital pre-distortion (DPD) technique is used to improve the linearity of HPA. This paper proposes the adaptive DPD technique, which is composed of a look-up table (LUT) based adaptive update algorithm, for the compensation of HPA nonlinearity. From the simulation results, the proposed technique shows the better convergence speed and spectrum re-growth suppression compared with conventional LUT technique.
- KSP 제안 키워드
- Data transmission, Growth suppression, HPA nonlinearity, High power amplifier(HPA), Re-growth, Saturation region, Transmission scheme, Update algorithm, adaptive update, convergence speed, digital predistortion(DPD)