Please use this identifier to cite or link to this item:
http://hdl.handle.net/11144/3644
Title: | Two Methods for Estimation of Amplifier Imbalances in Multi-Amplifier Transmission Structures, |
Authors: | Carvalho, Paulo Montemuza Dinis, Rui Ribeiro, Sara Beko, Marko |
Keywords: | Multilevel Constellations Multi-amplifier transmitters Estimation |
Issue Date: | 2017 |
Publisher: | Radioengineering Society |
Citation: | Carvalho, Paulo & Dinis, Rui & Ribeiro, S & Beko, M. (2017). Two Methods for Estimation of Amplifier Imbalances in Multi-Amplifier Transmission Structures. Radioengineering. 26. 285-290. 10.13164/re.2017.0285. |
Abstract: | Energy efficient power amplification of multilevel constellations can be achieved by an amplification structure based on the constellation's decomposition as a sum of polar components, such as M BPSK (Bi-Phase Shift Keying), that are separately amplified. By doing this one can define highly efficient transmitters based on multiple amplifiers. However, amplifiers' imbalances might lead to substantial constellation distortion since phase and gain imbalances cause rotations and translations of the symbols associated to each amplification branch that are combined to generate the resulting constellation. Therefore, it becomes crucial the knowledge of the amplifiers' imbalances to overcome this problem at the receiver side. For that we propose and evaluate efficient two new methods for estimating amplifier imbalances. Simulation results demonstrate that the good performance attainable by the proposed estimate algorithms can be assured without significant increase in system and computational complexity. |
URI: | http://hdl.handle.net/11144/3644 |
metadata.dc.identifier.doi: | 10.13164/re.2017.0285 |
Publisher Version: | https://www.researchgate.net/publication/316941300_Two_Methods_for_Estimation_of_Amplifier_Imbalances_in_Multi-Amplifier_Transmission_Structures?enrichId=rgreq-093c811e0fd863ec2fa514b60054b45f-XXX&enrichSource=Y292ZXJQYWdlOzMxNjk0MTMwMDtBUzo2MTA2NjA1ODkyNTI2MDhAMTUyMjYwNDIzODU3Mg%3D%3D&el=1_x_2&_esc=publicationCoverPdf |
Appears in Collections: | DCT - Artigos/Papers |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Two_Methods_for_Estimation_of_Amplifier_Imbalances (1).pdf | 742,06 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.