Im pact and digital estimation of nonlinear impairments in analog baseband processing stages

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

The digital compensation of RF imperfections is promising, but requires accurate models for the influence of the impairments on the baseband signals. To this end, this paper proposes a model for imperfections occurring in the popular direct conversion receiver architecture. It extends the previously applied IQ imbalance models by also taking DC offsets and nonlinearities from the output stage of the mixer up to the input stage of the ADC into account. Moreover, the impact of this more extended impairment model on the received baseband signals is derived. Finally, an estimation algorithm is presented to estimate the parameters of this model for digital compensation of the influence of these imperfections. Numerical results show that this estimation approach can achieve accurate estimates of the impairment parameters
Original languageEnglish
Title of host publicationEuwit 2008 European Conference on Wireless Technology
Pages73-76
Publication statusPublished - 2008

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Processing
Defects
Compensation and Redress

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Schoonen, A. M. J. M., Schenk, T. C. W., & Baltus, P. G. M. (2008). Im pact and digital estimation of nonlinear impairments in analog baseband processing stages. In Euwit 2008 European Conference on Wireless Technology (pp. 73-76)
Schoonen, A.M.J.M. ; Schenk, T.C.W. ; Baltus, P.G.M. / Im pact and digital estimation of nonlinear impairments in analog baseband processing stages. Euwit 2008 European Conference on Wireless Technology. 2008. pp. 73-76
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abstract = "The digital compensation of RF imperfections is promising, but requires accurate models for the influence of the impairments on the baseband signals. To this end, this paper proposes a model for imperfections occurring in the popular direct conversion receiver architecture. It extends the previously applied IQ imbalance models by also taking DC offsets and nonlinearities from the output stage of the mixer up to the input stage of the ADC into account. Moreover, the impact of this more extended impairment model on the received baseband signals is derived. Finally, an estimation algorithm is presented to estimate the parameters of this model for digital compensation of the influence of these imperfections. Numerical results show that this estimation approach can achieve accurate estimates of the impairment parameters",
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Schoonen, AMJM, Schenk, TCW & Baltus, PGM 2008, Im pact and digital estimation of nonlinear impairments in analog baseband processing stages. in Euwit 2008 European Conference on Wireless Technology. pp. 73-76.

Im pact and digital estimation of nonlinear impairments in analog baseband processing stages. / Schoonen, A.M.J.M.; Schenk, T.C.W.; Baltus, P.G.M.

Euwit 2008 European Conference on Wireless Technology. 2008. p. 73-76.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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T1 - Im pact and digital estimation of nonlinear impairments in analog baseband processing stages

AU - Schoonen, A.M.J.M.

AU - Schenk, T.C.W.

AU - Baltus, P.G.M.

PY - 2008

Y1 - 2008

N2 - The digital compensation of RF imperfections is promising, but requires accurate models for the influence of the impairments on the baseband signals. To this end, this paper proposes a model for imperfections occurring in the popular direct conversion receiver architecture. It extends the previously applied IQ imbalance models by also taking DC offsets and nonlinearities from the output stage of the mixer up to the input stage of the ADC into account. Moreover, the impact of this more extended impairment model on the received baseband signals is derived. Finally, an estimation algorithm is presented to estimate the parameters of this model for digital compensation of the influence of these imperfections. Numerical results show that this estimation approach can achieve accurate estimates of the impairment parameters

AB - The digital compensation of RF imperfections is promising, but requires accurate models for the influence of the impairments on the baseband signals. To this end, this paper proposes a model for imperfections occurring in the popular direct conversion receiver architecture. It extends the previously applied IQ imbalance models by also taking DC offsets and nonlinearities from the output stage of the mixer up to the input stage of the ADC into account. Moreover, the impact of this more extended impairment model on the received baseband signals is derived. Finally, an estimation algorithm is presented to estimate the parameters of this model for digital compensation of the influence of these imperfections. Numerical results show that this estimation approach can achieve accurate estimates of the impairment parameters

M3 - Conference contribution

SP - 73

EP - 76

BT - Euwit 2008 European Conference on Wireless Technology

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Schoonen AMJM, Schenk TCW, Baltus PGM. Im pact and digital estimation of nonlinear impairments in analog baseband processing stages. In Euwit 2008 European Conference on Wireless Technology. 2008. p. 73-76