Abstract
In a terrestrial broadcasting system, a power amplifier (PA) and mask filter (MF) are utilized to extend the service area of the broadcasting network, while suppressing unwanted out-of-band emissions. However, due to analog circuit imperfection, these devices inevitably cause significant linear and nonlinear distortions which may lead to spectral re-growth and the degradation of signal-to-noise ratio (SNR) performance. In order to compensate for these distortions, an adaptive pre-correction algorithm is proposed in this paper. Unlike conventional techniques, the proposed algorithm iteratively estimates the linear and nonlinear distortions using selective feedback loops. Computer simulations and laboratory prototype test results demonstrate that the proposed algorithm provides nearly an spectral gain of 8 dB near the edge of the channel bandwidth and an SNR improvement of 20 dB. Thus, it efficiently improves the dynamic range of the PA and MF.
| Original language | English |
|---|---|
| Article number | 7460914 |
| Pages (from-to) | 487-495 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Broadcasting |
| Volume | 62 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2016 Jun 1 |
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All Science Journal Classification (ASJC) codes
- Media Technology
- Electrical and Electronic Engineering
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A pre-correction algorithm for broadcasting transmitter. / Lee, Jaekwon; Jeon, Sungho; Kim, Dong Ku.
In: IEEE Transactions on Broadcasting, Vol. 62, No. 2, 7460914, 01.06.2016, p. 487-495.Research output: Contribution to journal › Article
TY - JOUR
T1 - A pre-correction algorithm for broadcasting transmitter
AU - Lee, Jaekwon
AU - Jeon, Sungho
AU - Kim, Dong Ku
PY - 2016/6/1
Y1 - 2016/6/1
N2 - In a terrestrial broadcasting system, a power amplifier (PA) and mask filter (MF) are utilized to extend the service area of the broadcasting network, while suppressing unwanted out-of-band emissions. However, due to analog circuit imperfection, these devices inevitably cause significant linear and nonlinear distortions which may lead to spectral re-growth and the degradation of signal-to-noise ratio (SNR) performance. In order to compensate for these distortions, an adaptive pre-correction algorithm is proposed in this paper. Unlike conventional techniques, the proposed algorithm iteratively estimates the linear and nonlinear distortions using selective feedback loops. Computer simulations and laboratory prototype test results demonstrate that the proposed algorithm provides nearly an spectral gain of 8 dB near the edge of the channel bandwidth and an SNR improvement of 20 dB. Thus, it efficiently improves the dynamic range of the PA and MF.
AB - In a terrestrial broadcasting system, a power amplifier (PA) and mask filter (MF) are utilized to extend the service area of the broadcasting network, while suppressing unwanted out-of-band emissions. However, due to analog circuit imperfection, these devices inevitably cause significant linear and nonlinear distortions which may lead to spectral re-growth and the degradation of signal-to-noise ratio (SNR) performance. In order to compensate for these distortions, an adaptive pre-correction algorithm is proposed in this paper. Unlike conventional techniques, the proposed algorithm iteratively estimates the linear and nonlinear distortions using selective feedback loops. Computer simulations and laboratory prototype test results demonstrate that the proposed algorithm provides nearly an spectral gain of 8 dB near the edge of the channel bandwidth and an SNR improvement of 20 dB. Thus, it efficiently improves the dynamic range of the PA and MF.
UR - http://www.scopus.com/inward/record.url?scp=84992303551&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84992303551&partnerID=8YFLogxK
U2 - 10.1109/TBC.2016.2540521
DO - 10.1109/TBC.2016.2540521
M3 - Article
VL - 62
SP - 487
EP - 495
JO - IEEE Transactions on Broadcasting
JF - IEEE Transactions on Broadcasting
SN - 0018-9316
IS - 2
M1 - 7460914
ER -