Serial analog QAM modems based on complex band-pass filters with LF Bessel prototypes

Y.A. Grebenko; R.I. Polyak; Yan Lin Paing

doi:10.18127/j00338486-202405-16

Serial analog QAM modems based on complex band-pass filters with LF Bessel prototypes

Y.A. Grebenko¹, R.I. Polyak², Yan Lin Paing³

research article UDC 621.38 Pages: 136-143 doi.org/10.18127/j00338486-202405-16

^1,2,3 National Research University (NRU) “MPEI” (Moscow, Russia)

Keywords: Analog complex band pass filter amplitude-frequency response infinite impulse response phase-frequency response quadrature amplitude modulation serial QAM modem

Abstract

The article is devoted to the development and implementation of algorithms for quadrature amplitude modulation and demodulation based on analog complex band pass filters with low-frequency Bessel prototypes. The use of complex Bessel filters makes it possible to obtain orthogonal carrier signals close in shape to symmetric signals with practically non-overlapping spectra.

Overview of the development and implementation of a serial QAM modem based on analog complex band-pass Bessel filters.

The procedure for obtaining the expression for the impulse response of analog complex band-pass Bessel filters is considered. With the help of circuit simulation, the frequency response and impulse response of such a filter are determined. The choice of the center frequency is carried out by setting two coefficients.

A block diagram of a serial data transmission system with quadrature amplitude modulation (QAM) based on analog complex band-pass Bessel filters is proposed. The results of its circuit simulation in the Micro-Cap environment are presented.

Received: 06.02.2024
Approved after review: 12.02.2024
Accepted: 29.04.2024

How to cite

Гребенко Ю.А., Поляк Р.И., Ян Лин Пайнг. Последовательные аналоговые КАМ-модемы на базе комплексных полосовых фильтров с НЧ-прототипами Бесселя // Радиотехника. 2024. Т. 88. № 5. С. 136−143. DOI: https://doi.org/10.18127/j00338486-202405-16

References

Balashov V.A., Vorobienko P.P., Ljahoveckij L.M. Sistemy peredachi ortogonal'nymi garmonicheskimi signalami. M.: Jeko-Trendz. 2012. 223 s. (in Russian).
Grebenko Ju.A., Aung Ko Min. Proektirovanie kompleksnyh polosovyh fil'trov na baze programmiruemyh analogovyh integral'nyh shem. Jelektrosvjaz'. 2020. № 8. S. 71-74 (in Russian).
Grebenko Ju.A., Chzho Zej Ja. Kompleksnye aktivnye RC fil'try na identichnyh zven'jah. Radiotehnika. 2008. № 2. S. 61-64 s. (in Russian).
Grebenko Ju.A. Metody cifrovoj obrabotki signalov v radiopriemnyh ustrojstvah. M.: Izdatel'skij dom MJeI. 2006. 48 s. (in Russian).
Lajons R. Cifrovaja obrabotka signalov: Per. angl. Izd. 2-e. M.: OOO «Binom-Press». 2006. 656 s. (in Russian).

[1] Balashov V.A., Vorobienko P.P., Ljahoveckij L.M. Sistemy peredachi ortogonal'nymi garmonicheskimi signalami. M.: Jeko-Trendz. 2012. 223 s. (in Russian).

[2] Grebenko Ju.A., Aung Ko Min. Proektirovanie kompleksnyh polosovyh fil'trov na baze programmiruemyh analogovyh integral'nyh shem. Jelektrosvjaz'. 2020. № 8. S. 71-74 (in Russian).

[3] Grebenko Ju.A., Chzho Zej Ja. Kompleksnye aktivnye RC fil'try na identichnyh zven'jah. Radiotehnika. 2008. № 2. S. 61-64 s. (in Russian).

[4] Grebenko Ju.A. Metody cifrovoj obrabotki signalov v radiopriemnyh ustrojstvah. M.: Izdatel'skij dom MJeI. 2006. 48 s. (in Russian).

[5] Lajons R. Cifrovaja obrabotka signalov: Per. angl. Izd. 2-e. M.: OOO «Binom-Press». 2006. 656 s. (in Russian).

Abstract

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