Augmented Twin-Nonlinear Two-Box Behavioral Models for Multicarrier LTE Power Amplifiers
A novel class of behavioral models is proposed for LTE-driven Doherty power amplifiers with strong memory effects. The proposed models, labeled augmented twin-nonlinear two-box models, are built by cascading a highly nonlinear memoryless function with a mildly nonlinear memory polynomial with cross...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/762534 |
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| author | Oualid Hammi |
| author_facet | Oualid Hammi |
| author_sort | Oualid Hammi |
| collection | DOAJ |
| description | A novel class of behavioral models is proposed for LTE-driven Doherty power amplifiers with strong memory effects. The proposed models, labeled augmented twin-nonlinear two-box models, are built by cascading a highly nonlinear memoryless function with a mildly nonlinear memory polynomial with cross terms. Experimental validation on gallium nitride based Doherty power amplifiers illustrates the accuracy enhancement and complexity reduction achieved by the proposed models. When strong memory effects are observed, the augmented twin-nonlinear two-box models can improve the normalized mean square error by up to 3 dB for the same number of coefficients when compared to state-of-the-art twin-nonlinear two-box models. Furthermore, the augmented twin-nonlinear two-box models lead to the same performance as previously reported twin-nonlinear two-box models while requiring up to 80% less coefficients. |
| format | Article |
| id | doaj-art-c988fcd353004f078fa598e6c2c835af |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-c988fcd353004f078fa598e6c2c835af2025-02-03T01:03:18ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/762534762534Augmented Twin-Nonlinear Two-Box Behavioral Models for Multicarrier LTE Power AmplifiersOualid Hammi0Electrical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi ArabiaA novel class of behavioral models is proposed for LTE-driven Doherty power amplifiers with strong memory effects. The proposed models, labeled augmented twin-nonlinear two-box models, are built by cascading a highly nonlinear memoryless function with a mildly nonlinear memory polynomial with cross terms. Experimental validation on gallium nitride based Doherty power amplifiers illustrates the accuracy enhancement and complexity reduction achieved by the proposed models. When strong memory effects are observed, the augmented twin-nonlinear two-box models can improve the normalized mean square error by up to 3 dB for the same number of coefficients when compared to state-of-the-art twin-nonlinear two-box models. Furthermore, the augmented twin-nonlinear two-box models lead to the same performance as previously reported twin-nonlinear two-box models while requiring up to 80% less coefficients.http://dx.doi.org/10.1155/2014/762534 |
| spellingShingle | Oualid Hammi Augmented Twin-Nonlinear Two-Box Behavioral Models for Multicarrier LTE Power Amplifiers The Scientific World Journal |
| title | Augmented Twin-Nonlinear Two-Box Behavioral Models for Multicarrier LTE Power Amplifiers |
| title_full | Augmented Twin-Nonlinear Two-Box Behavioral Models for Multicarrier LTE Power Amplifiers |
| title_fullStr | Augmented Twin-Nonlinear Two-Box Behavioral Models for Multicarrier LTE Power Amplifiers |
| title_full_unstemmed | Augmented Twin-Nonlinear Two-Box Behavioral Models for Multicarrier LTE Power Amplifiers |
| title_short | Augmented Twin-Nonlinear Two-Box Behavioral Models for Multicarrier LTE Power Amplifiers |
| title_sort | augmented twin nonlinear two box behavioral models for multicarrier lte power amplifiers |
| url | http://dx.doi.org/10.1155/2014/762534 |
| work_keys_str_mv | AT oualidhammi augmentedtwinnonlineartwoboxbehavioralmodelsformulticarrierltepoweramplifiers |