Power amplifier linearisation scheme to mitigate superfluous radiations and suppress adjacent channel interference
Power amplifiers are one of the costly devices in wireless communication systems and exhibit non-linearity. The problem of non-linearity in the power amplifier categorises in two disturbance impacts, output distortion and in-band distortion which lead to adjacent channel interference and constellati...
| Main Authors: | , , , |
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| Format: | Article |
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The Institution of Engineering and Technology
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/34980/ |
| _version_ | 1848847925340274688 |
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| author | Varahram, Pooria Mohd Ali, Borhanuddin Mohammady, Somayeh Sulaiman, Nasri |
| author_facet | Varahram, Pooria Mohd Ali, Borhanuddin Mohammady, Somayeh Sulaiman, Nasri |
| author_sort | Varahram, Pooria |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Power amplifiers are one of the costly devices in wireless communication systems and exhibit non-linearity. The problem of non-linearity in the power amplifier categorises in two disturbance impacts, output distortion and in-band distortion which lead to adjacent channel interference and constellation deviation, respectively. In order to gain maximum efficiency of the power amplifier and reduce interference, the authors propose a new digital pre-distortion scheme called complex gain convergence (CGC). The proposed scheme is compared with indirect learning architecture and validated against an laterally diffused metal oxide semiconductor (LDMOS) power amplifier. The outcome of applying CGC scheme shows enhancement in adjacent channel leakage ratio and error vector magnitude performance while the complexity is even lower. An experimental demonstration with the actual power amplifier is also presented. |
| first_indexed | 2025-11-15T09:26:21Z |
| format | Article |
| id | upm-34980 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T09:26:21Z |
| publishDate | 2014 |
| publisher | The Institution of Engineering and Technology |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-349802015-12-25T06:31:10Z http://psasir.upm.edu.my/id/eprint/34980/ Power amplifier linearisation scheme to mitigate superfluous radiations and suppress adjacent channel interference Varahram, Pooria Mohd Ali, Borhanuddin Mohammady, Somayeh Sulaiman, Nasri Power amplifiers are one of the costly devices in wireless communication systems and exhibit non-linearity. The problem of non-linearity in the power amplifier categorises in two disturbance impacts, output distortion and in-band distortion which lead to adjacent channel interference and constellation deviation, respectively. In order to gain maximum efficiency of the power amplifier and reduce interference, the authors propose a new digital pre-distortion scheme called complex gain convergence (CGC). The proposed scheme is compared with indirect learning architecture and validated against an laterally diffused metal oxide semiconductor (LDMOS) power amplifier. The outcome of applying CGC scheme shows enhancement in adjacent channel leakage ratio and error vector magnitude performance while the complexity is even lower. An experimental demonstration with the actual power amplifier is also presented. The Institution of Engineering and Technology 2014 Article PeerReviewed Varahram, Pooria and Mohd Ali, Borhanuddin and Mohammady, Somayeh and Sulaiman, Nasri (2014) Power amplifier linearisation scheme to mitigate superfluous radiations and suppress adjacent channel interference. IET Communication, 8 (2). pp. 258-265. ISSN 1751-8628; ESSN: 1751-8636 http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=6740102 10.1049/iet-com.2013.0291 |
| spellingShingle | Varahram, Pooria Mohd Ali, Borhanuddin Mohammady, Somayeh Sulaiman, Nasri Power amplifier linearisation scheme to mitigate superfluous radiations and suppress adjacent channel interference |
| title | Power amplifier linearisation scheme to mitigate superfluous radiations and suppress adjacent channel interference |
| title_full | Power amplifier linearisation scheme to mitigate superfluous radiations and suppress adjacent channel interference |
| title_fullStr | Power amplifier linearisation scheme to mitigate superfluous radiations and suppress adjacent channel interference |
| title_full_unstemmed | Power amplifier linearisation scheme to mitigate superfluous radiations and suppress adjacent channel interference |
| title_short | Power amplifier linearisation scheme to mitigate superfluous radiations and suppress adjacent channel interference |
| title_sort | power amplifier linearisation scheme to mitigate superfluous radiations and suppress adjacent channel interference |
| url | http://psasir.upm.edu.my/id/eprint/34980/ http://psasir.upm.edu.my/id/eprint/34980/ http://psasir.upm.edu.my/id/eprint/34980/ |