Sensitivity of channel estimation using B-splines to mismatched Doppler frequency

Junruo Zhang, Rami Khal, Yury Zakharov

Research output: Contribution to conferencePaperpeer-review


In this paper, we investigate the pilot assisted maximum likelihood (ML) and minimum mean square error (MMSE) channel estimators using B-splines in time-variant Rayleigh fading channels following Jakes' model. The analytical mean square error (MSE), including noise-free modeling error and statistical estimation error, of the channel estimators is derived. We also derive the overall MSE of the MMSE channel estimator with mismatched estimation of the Doppler frequency. The results show that the MMSE estimator using B-splines has little sensitivity to overestimation of the Doppler frequency. However, when the Doppler frequency is underestimated, even slightly, its performance degrades significantly and becomes much worse than that of the ML channel estimator.
Original languageEnglish
Number of pages5
Publication statusPublished - Sept 2010
EventWireless Communication Systems (ISWCS), 2010 - York, United Kingdom
Duration: 19 Sept 201022 Sept 2010


ConferenceWireless Communication Systems (ISWCS), 2010
Country/TerritoryUnited Kingdom

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