Analysis and compensation of nonlinearities in digital transmission systems

Biglieri, E.; Barberis, Sergio Daniel; Catena, M.

doi:10.1109/49.192728

Cited by 109 publications

(34 citation statements)

References 20 publications

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“…since it provides for a satisfactory trade-off between performance and complexity [17]. Since we are focusing on the performance aboard the satellite and not at the user terminal, we will neglect the effects of the OMUX filter, assuming that they can be taken into account by the user terminal.…”

Section: B Amplifier and Predistorter Modelingmentioning

confidence: 99%

On-board signal predistortion for digital transparent satellites

Mazzali

Ottersten

2015

2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)

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Abstract-On-board processing (OBP), a paradigm that allows for manipulation of the signal at the satellite transponder, is being embraced by a large section of the satellite community. Exploiting OBP can lead to efficient implementation, bandwidth saving, lower redundancy, and better performance. Enabling processing aboard a satellite necessitates re-assessing the implementation of a number of signal processing techniques which, so far, have been ground-centric. In this work, we investigate the possibility of implementing signal predistortion (SPD) aboard a satellite having digital transparent processor (DTP). Such satellites employ transponders that allow for the implementation of limited functionalities in the digital domain. On-board predistortion can then be performed on the digitized data and can provide better performance compared to on-ground techniques. However, the conversion to the digital domain performed by an analogto-digital converter (ADC) introduces different types of noise. Among these, the clock jitter requires the implementation of estimation and compensation algorithms. In this paper we propose a reduced-complexity on-board signal predistortion algorithm capable of post-compensating the jitter introduced by the ADC, and pre-compensating the distortion generated by the amplifier.

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Section: B Amplifier and Predistorter Modelingmentioning

confidence: 99%

On-board signal predistortion for digital transparent satellites

Mazzali

Ottersten

2015

2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)

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“…We investigate new detectors able to cope with the joint effects of nonlinearities and ISI. They rely on a Volterraseries expansion of the satellite channel, largely adopted in the past for modeling digital satellite channels and for designing equalizers and predistorters [8], [9], and on the use of the framework based on factor graphs (FGs) and the sum-product algorithm (SPA) [10]. The derived algorithms result to be similar, in structure, to those described in [11].…”

mentioning

confidence: 93%

Novel SISO Detection Algorithms for Nonlinear Satellite Channels

Colavolpe

Piemontese

2011

2011 IEEE Global Telecommunications Conference - GLOBECOM 2011

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Abstract-We propose novel detection algorithms for linear modulations transmitted over nonlinear satellite channels. These algorithms are derived by using a Volterra-series expansion of the useful signal and by applying the sum-product algorithm to a suitably-designed factor graph. Being soft-input soft-output (SISO) in nature, the proposed detectors can be adopted in turbo processing without additional modifications. When compared with the optimal detection algorithm for these channels, whose complexity is exponential in the channel memory, the proposed schemes result very appealing in terms of tradeoff between performance and computational complexity. Particularly, they can approach the optimal performance with a complexity only linear in the channel memory.

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“…Predistortion methods have been widely studied to combat nonlinearity in RF power amplifiers [15][16]. These methods add inverse filters in front of the power amplifier so that the combination of the inverse filter and the power amplifier can produce less nonlinearity.…”

Section: Introductionmentioning

confidence: 99%

PSK communications systems using fully saturated power amplifiers

Liu

2006

IEEE Trans. Aerosp. Electron. Syst.

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Analysis and compensation of nonlinearities in digital transmission systems

Cited by 109 publications

References 20 publications

On-board signal predistortion for digital transparent satellites

On-board signal predistortion for digital transparent satellites

Novel SISO Detection Algorithms for Nonlinear Satellite Channels

PSK communications systems using fully saturated power amplifiers

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