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Content Provider | IET Digital Library |
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Author | Jaraut, Praveen Rawat, Meenakshi Ghannouchi, Fadhel M. |
Abstract | Multi-band transmitter systems are evolving to support the smooth transition from 4G to 5G communication systems. Moreover, recent developments of multi-band and ultra-wideband power amplifiers have led to a possible scenario where the second carrier signal is transmitted at the harmonic frequency of the first carrier signal. This results in harmonic interference from the first carrier signal as well as additional cross-modulation and intermodulation distortion (IMD) components, which cannot be filtered out. The computational and memory requirements for digital predistortion (DPD) in such scenario increase drastically to include all interference terms. This study presents a novel two-dimensional curtailed harmonic memory polynomial (2D-CHMP) model to capture harmonic interferences, cross-modulation and IMDs. The model complexity and memory requirement of 2D-CHMP are very less as compared to the state-of-the-art two-dimensional harmonic memory polynomial (2D-HMP) model. For proof-of-concept, it is shown with two different measurement setups that the proposed 2D-CHMP DPD provides similar linearisation performances as compared to the 2D-HMP DPD with less number of coefficients and computational complexity. As a study, it is shown that the proposed model can be further adapted to a low-precision (low-bit) environment by utilising principal component analysis. |
Starting Page | 1438 |
Ending Page | 1447 |
Page Count | 10 |
ISSN | 17518628 |
Volume Number | 12 |
e-ISSN | 17518636 |
Issue Number | Issue 12, Jul (2018) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/12/12 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.1376 |
Journal | IET Communications |
Publisher Date | 2018-03-22 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | 2D Curtailed Harmonic Memory Polynomial 2D-CHMP DPD Model 4G Communication Systems 4G Mobile Communication 5G Communication Systems 5G Mobile Communication Algebra Amplifiers Computational Complexity Concurrent Dual-band Modelling Cross-modulation Digital Predistortion Electromagnetic Compatibility Harmonic Frequency Harmonic Interference Harmonic Interferences IMD Component Interference Interference Term Intermodulation Distortion Intermodulation Distortion Component Linearisation Performances Linearisation Technique Mobile Radio System Model Complexity Modulation And Coding Method Multiband Power Amplifiers Multiband Transmitter System Polynomial Power Amplifier Principal Component Analysis Radio Frequency Interference Radio Transmitters Reduced Complexity Second Carrier Signal Signal Processing Signal Processing And Detection Two-dimensional Curtailed Harmonic Memory Polynomial Model Ultra-wideband Power Amplifiers |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering Computer Science Applications |
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