Abstract
Techniques are presented for performing digital predistortion with non-uniformly spaced look-up tables which compensate for amplifier nonlinearities. Performance measures include spectral re-growth analysis, which quantifies the out-of-band distortion, and constellation distortion, which quantifies the in-band distortion. This linearization technique is also analyzed with respect to its effect on amplifier efficiency. To further improve efficiency and performance, the look-up tables are normalized at the operating point instead of the linear gain point. Finally, adaptive algorithms are detailed. It is shown that with a changing signal or amplifier characteristic, adaptive indexing needs to be implemented. This is done efficiently with linked lists.
| Original language | English (US) |
|---|---|
| Title of host publication | Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers |
| Editors | Michael B. Matthews |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 888-892 |
| Number of pages | 5 |
| ISBN (Electronic) | 0780357000, 9780780357006 |
| DOIs | |
| State | Published - Jan 1 1999 |
| Event | 33rd Asilomar Conference on Signals, Systems, and Computers, ACSSC 1999 - Pacific Grove, United States Duration: Oct 24 1999 → Oct 27 1999 |
Publication series
| Name | Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers |
|---|---|
| Volume | 2 |
Other
| Other | 33rd Asilomar Conference on Signals, Systems, and Computers, ACSSC 1999 |
|---|---|
| Country | United States |
| City | Pacific Grove |
| Period | 10/24/99 → 10/27/99 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Signal Processing
- Computer Networks and Communications
Cite this
}
Adaptive baseband predistortion techniques for amplifier linearization. / Muhonen, K. J.; Kavehrad, Mohsen; Krishnamoorthy, R.
Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers. ed. / Michael B. Matthews. Institute of Electrical and Electronics Engineers Inc., 1999. p. 888-892 831837 (Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers; Vol. 2).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Adaptive baseband predistortion techniques for amplifier linearization
AU - Muhonen, K. J.
AU - Kavehrad, Mohsen
AU - Krishnamoorthy, R.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - Techniques are presented for performing digital predistortion with non-uniformly spaced look-up tables which compensate for amplifier nonlinearities. Performance measures include spectral re-growth analysis, which quantifies the out-of-band distortion, and constellation distortion, which quantifies the in-band distortion. This linearization technique is also analyzed with respect to its effect on amplifier efficiency. To further improve efficiency and performance, the look-up tables are normalized at the operating point instead of the linear gain point. Finally, adaptive algorithms are detailed. It is shown that with a changing signal or amplifier characteristic, adaptive indexing needs to be implemented. This is done efficiently with linked lists.
AB - Techniques are presented for performing digital predistortion with non-uniformly spaced look-up tables which compensate for amplifier nonlinearities. Performance measures include spectral re-growth analysis, which quantifies the out-of-band distortion, and constellation distortion, which quantifies the in-band distortion. This linearization technique is also analyzed with respect to its effect on amplifier efficiency. To further improve efficiency and performance, the look-up tables are normalized at the operating point instead of the linear gain point. Finally, adaptive algorithms are detailed. It is shown that with a changing signal or amplifier characteristic, adaptive indexing needs to be implemented. This is done efficiently with linked lists.
UR - http://www.scopus.com/inward/record.url?scp=0033344642&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033344642&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.1999.831837
DO - 10.1109/ACSSC.1999.831837
M3 - Conference contribution
T3 - Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers
SP - 888
EP - 892
BT - Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers
A2 - Matthews, Michael B.
PB - Institute of Electrical and Electronics Engineers Inc.
ER -