--- _id: '9828' abstract: - lang: eng text: Amplitude demodulation is a classical operation used in signal processing. For a long time, its effective applications in practice have been limited to narrowband signals. In this work, we generalize amplitude demodulation to wideband signals. We pose demodulation as a recovery problem of an oversampled corrupted signal and introduce special iterative schemes belonging to the family of alternating projection algorithms to solve it. Sensibly chosen structural assumptions on the demodulation outputs allow us to reveal the high inferential accuracy of the method over a rich set of relevant signals. This new approach surpasses current state-of-the-art demodulation techniques apt to wideband signals in computational efficiency by up to many orders of magnitude with no sacrifice in quality. Such performance opens the door for applications of the amplitude demodulation procedure in new contexts. In particular, the new method makes online and large-scale offline data processing feasible, including the calculation of modulator-carrier pairs in higher dimensions and poor sampling conditions, independent of the signal bandwidth. We illustrate the utility and specifics of applications of the new method in practice by using natural speech and synthetic signals. acknowledgement: The author thanks his colleagues K. Huszár and G. Tkačik for valuable discussions and comments on the manuscript. article_processing_charge: No article_type: original author: - first_name: Mantas full_name: Gabrielaitis, Mantas id: 4D5B0CBC-F248-11E8-B48F-1D18A9856A87 last_name: Gabrielaitis orcid: 0000-0002-7758-2016 citation: ama: Gabrielaitis M. Fast and accurate amplitude demodulation of wideband signals. IEEE Transactions on Signal Processing. 2021;69:4039-4054. doi:10.1109/TSP.2021.3087899 apa: Gabrielaitis, M. (2021). Fast and accurate amplitude demodulation of wideband signals. IEEE Transactions on Signal Processing. Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/TSP.2021.3087899 chicago: Gabrielaitis, Mantas. “Fast and Accurate Amplitude Demodulation of Wideband Signals.” IEEE Transactions on Signal Processing. Institute of Electrical and Electronics Engineers, 2021. https://doi.org/10.1109/TSP.2021.3087899. ieee: M. Gabrielaitis, “Fast and accurate amplitude demodulation of wideband signals,” IEEE Transactions on Signal Processing, vol. 69. Institute of Electrical and Electronics Engineers, pp. 4039–4054, 2021. ista: Gabrielaitis M. 2021. Fast and accurate amplitude demodulation of wideband signals. IEEE Transactions on Signal Processing. 69, 4039–4054. mla: Gabrielaitis, Mantas. “Fast and Accurate Amplitude Demodulation of Wideband Signals.” IEEE Transactions on Signal Processing, vol. 69, Institute of Electrical and Electronics Engineers, 2021, pp. 4039–54, doi:10.1109/TSP.2021.3087899. short: M. Gabrielaitis, IEEE Transactions on Signal Processing 69 (2021) 4039–4054. date_created: 2021-08-08T22:01:31Z date_published: 2021-06-09T00:00:00Z date_updated: 2023-08-10T14:19:33Z day: '09' department: - _id: GaTk doi: 10.1109/TSP.2021.3087899 external_id: arxiv: - '2102.04832' isi: - '000682123900002' intvolume: ' 69' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2102.04832 month: '06' oa: 1 oa_version: Preprint page: 4039 - 4054 publication: IEEE Transactions on Signal Processing publication_identifier: eissn: - 1941-0476 issn: - 1053-587X publication_status: published publisher: Institute of Electrical and Electronics Engineers quality_controlled: '1' scopus_import: '1' status: public title: Fast and accurate amplitude demodulation of wideband signals type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 69 year: '2021' ...