Two-stage Adaptive Digital AGC Method for SDR Radio 


Vol. 37,  No. 6, pp. 462-468, Jun.  2012


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  Abstract

In this paper, an adaptive digital automatic gain control(AGC) algorithm with two stages is proposed. AGC technique is crucial for mobile communication equipment because path loss in wireless channel and gain fluctuation in receiver front-end continuously change the received signal strength. Furthermore, adaptive criteria should be applied to the design of AGC algorithm in order to support many waveforms with one SDR communication device. With these reasons, a two-stage structure is proposed to satisfy both flexibility and adaptiveness. Compared with conventional method, it also requires shorter convergence time. Numerical results show that the gain value of variable gain amplifier(VGA) is converged within proper time and proposed scheme controls the input level of analog to digital converter(ADC) to be stable during long range of time.

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  Cite this article

[IEEE Style]

J. Park, Y. Kim, J. Cho, H. Cho, Y. Lee, S. Yoon, "Two-stage Adaptive Digital AGC Method for SDR Radio," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 6, pp. 462-468, 2012. DOI: .

[ACM Style]

Jonghun Park, Youngje Kim, Jungil Cho, Hyung-Weon Cho, Youngpo Lee, and Seokho Yoon. 2012. Two-stage Adaptive Digital AGC Method for SDR Radio. The Journal of Korean Institute of Communications and Information Sciences, 37, 6, (2012), 462-468. DOI: .

[KICS Style]

Jonghun Park, Youngje Kim, Jungil Cho, Hyung-Weon Cho, Youngpo Lee, Seokho Yoon, "Two-stage Adaptive Digital AGC Method for SDR Radio," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 6, pp. 462-468, 6. 2012.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880