Name
Title | ||
|---|---|---|
Low power implementation of digital predistortion filter on a heterogeneous application specific multiprocessor |
Abstract | ||
|---|---|---|
Power-constrained mobile radio communication transmitters drive their transmit power amplifiers close to their saturation regions, which results in nonlinear intermodulation distortion that is especially harmful in multi-cluster and carrier aggregation transmission scenarios. Digital predistortion is a method for linearizing the transmitter and suppressing the most harmful spurious emissions at the transmitter power amplifier output. This paper describes a programmable implementation of a digital predistortion filter on a heterogeneous Transport Trigger Architecture (TTA) multiprocessor. The predistortion algorithm is based on a parallel Hammerstein polynomial model and the experimental results show that the proposed programmable architecture is capable of linearizing a 20 MHz LTE carrier in realtime with a power consumption that is suitable for mobile devices. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/ICASSP.2014.6855227 | Acoustics, Speech and Signal Processing |
Keywords | Field | DocType |
Long Term Evolution,VHF filters,digital filters,intermodulation distortion,microcomputers,mobile radio,power amplifiers,programmable filters,radio transmitters,LTE carrier,TTA multiprocessor,carrier aggregation transmission scenario,digital predistortion filter,frequency 20 MHz,harmful spurious emissions,heterogeneous application specific multiprocessor,heterogeneous transport trigger architecture multiprocessor,low power implementation,multicluster transmission scenario,nonlinear intermodulation distortion,parallel Hammerstein polynomial model,power consumption,power-constrained mobile radio communication transmitters drive,programmable implementation,saturation regions,transmit power amplifier output,Digital signal processing,Multicore processing,Predistortion | Transmitter,Mobile radio,Mathematical optimization,Transmitter power output,Nonlinear system,Computer science,Electronic engineering,Multiprocessing,Real-time computing,Intermodulation,Predistortion,Amplifier | Conference |
ISSN | Citations | PageRank |
1520-6149 | 6 | 0.61 |
References | Authors | |
8 | 9 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Amanullah Ghazi | 1 | 34 | 5.73 |
| Jani Boutellier | 2 | 137 | 25.36 |
| Mahmoud Abdelaziz | 3 | 37 | 6.39 |
| Xiaojia Lu | 4 | 57 | 9.26 |
| Lauri Anttila | 5 | 745 | 61.19 |
| Joseph R. Cavallaro | 6 | 1175 | 115.35 |
| Shuvra S. Bhattacharyya | 7 | 1416 | 162.67 |
| Mikko Valkama | 8 | 1567 | 175.51 |
| Markku J. Juntti | 9 | 1065 | 127.57 |