Equivalent Baseband Models and Corresponding Digital Predistortion for Compensating Dynamic Passband Nonlinearities in Phase-Amplitude Modulation-Demodulation Schemes
© 1991-2012 IEEE. We consider equivalent baseband representation of transmission circuits in the form of a nonlinear dynamical system S in discrete time (DT) defined by a series interconnection of a phase-Amplitude modulator, a nonlinear dynamical system F in continuous time (CT), and an ideal demod...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Institute of Electrical and Electronics Engineers (IEEE)
2021
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| Online Access: | https://hdl.handle.net/1721.1/136348 |
| _version_ | 1811086311210090496 |
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| author | Tanovic, Omer Megretski, Alexandre Li, Yan Stojanovic, Vladimir Osqui, Mitra |
| author2 | Massachusetts Institute of Technology. Laboratory for Information and Decision Systems |
| author_facet | Massachusetts Institute of Technology. Laboratory for Information and Decision Systems Tanovic, Omer Megretski, Alexandre Li, Yan Stojanovic, Vladimir Osqui, Mitra |
| author_sort | Tanovic, Omer |
| collection | MIT |
| description | © 1991-2012 IEEE. We consider equivalent baseband representation of transmission circuits in the form of a nonlinear dynamical system S in discrete time (DT) defined by a series interconnection of a phase-Amplitude modulator, a nonlinear dynamical system F in continuous time (CT), and an ideal demodulator. We show that when F is a CT Volterra series model, the resulting S is a series interconnection of a DT Volterra series model of the same degree and equivalent memory depth, and an LTI system with special properties. The result suggests a new, nonobvious, analytically motivated structure of digital precompensation of analog nonlinear distortions such as those caused by power amplifiers in digital communication systems. The baseband model and the corresponding digital compensation structure readily extend to OFDM modulation. MATLAB simulation is used to verify the preposed equivalent baseband model and demonstrate the effectiveness of the new compensation scheme, as compared to the standard Volterra series approach. |
| first_indexed | 2024-09-23T13:24:09Z |
| format | Article |
| id | mit-1721.1/136348 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:24:09Z |
| publishDate | 2021 |
| publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| record_format | dspace |
| spelling | mit-1721.1/1363482023-11-03T15:25:57Z Equivalent Baseband Models and Corresponding Digital Predistortion for Compensating Dynamic Passband Nonlinearities in Phase-Amplitude Modulation-Demodulation Schemes Tanovic, Omer Megretski, Alexandre Li, Yan Stojanovic, Vladimir Osqui, Mitra Massachusetts Institute of Technology. Laboratory for Information and Decision Systems Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science © 1991-2012 IEEE. We consider equivalent baseband representation of transmission circuits in the form of a nonlinear dynamical system S in discrete time (DT) defined by a series interconnection of a phase-Amplitude modulator, a nonlinear dynamical system F in continuous time (CT), and an ideal demodulator. We show that when F is a CT Volterra series model, the resulting S is a series interconnection of a DT Volterra series model of the same degree and equivalent memory depth, and an LTI system with special properties. The result suggests a new, nonobvious, analytically motivated structure of digital precompensation of analog nonlinear distortions such as those caused by power amplifiers in digital communication systems. The baseband model and the corresponding digital compensation structure readily extend to OFDM modulation. MATLAB simulation is used to verify the preposed equivalent baseband model and demonstrate the effectiveness of the new compensation scheme, as compared to the standard Volterra series approach. 2021-10-27T20:34:58Z 2021-10-27T20:34:58Z 2018 2019-06-13T18:20:20Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/136348 en 10.1109/TSP.2018.2871385 IEEE Transactions on Signal Processing Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Institute of Electrical and Electronics Engineers (IEEE) MIT web domain |
| spellingShingle | Tanovic, Omer Megretski, Alexandre Li, Yan Stojanovic, Vladimir Osqui, Mitra Equivalent Baseband Models and Corresponding Digital Predistortion for Compensating Dynamic Passband Nonlinearities in Phase-Amplitude Modulation-Demodulation Schemes |
| title | Equivalent Baseband Models and Corresponding Digital Predistortion for Compensating Dynamic Passband Nonlinearities in Phase-Amplitude Modulation-Demodulation Schemes |
| title_full | Equivalent Baseband Models and Corresponding Digital Predistortion for Compensating Dynamic Passband Nonlinearities in Phase-Amplitude Modulation-Demodulation Schemes |
| title_fullStr | Equivalent Baseband Models and Corresponding Digital Predistortion for Compensating Dynamic Passband Nonlinearities in Phase-Amplitude Modulation-Demodulation Schemes |
| title_full_unstemmed | Equivalent Baseband Models and Corresponding Digital Predistortion for Compensating Dynamic Passband Nonlinearities in Phase-Amplitude Modulation-Demodulation Schemes |
| title_short | Equivalent Baseband Models and Corresponding Digital Predistortion for Compensating Dynamic Passband Nonlinearities in Phase-Amplitude Modulation-Demodulation Schemes |
| title_sort | equivalent baseband models and corresponding digital predistortion for compensating dynamic passband nonlinearities in phase amplitude modulation demodulation schemes |
| url | https://hdl.handle.net/1721.1/136348 |
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