An Adaptive Control of Individual Channels’ Transmission Power in Femtocells 


Vol. 37,  No. 9, pp. 762-771, Sep.  2012


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  Abstract

In this paper, we propose an adaptive power control scheme employing a self-optimization concept in femtocell systems, in order to improve system capacity, thereby reducing call-drop probability. In the proposed scheme, each femto base station(FBS) controls individual channel"s transmission power base on two parameters; the neighboring cell"s transmission power for each individual channel which is delivered from a femto-gateway and the received power strength from neighboring cells which is periodically measured by means of a spectrum sensing. Adaptive adjustment of individual channel"s transmission power in accordance with femto mobile station(FMS) mobility features can also reduce undesirable handovers and evenly distribute traffic load over all femtocells. In addition, the manipulative control of channel"s transmission power is able to keep the system coverage and the call-drop probability within an acceptable range, regardless of density of femtocells. Computer simulation shows that the proposed scheme outperforms existing schemes in terms of the system coverage and the call-drop probability.

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  Cite this article

[IEEE Style]

H. Lee and H. Cho, "An Adaptive Control of Individual Channels’ Transmission Power in Femtocells," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 9, pp. 762-771, 2012. DOI: .

[ACM Style]

Hoseog Lee and Ho-shin Cho. 2012. An Adaptive Control of Individual Channels’ Transmission Power in Femtocells. The Journal of Korean Institute of Communications and Information Sciences, 37, 9, (2012), 762-771. DOI: .

[KICS Style]

Hoseog Lee and Ho-shin Cho, "An Adaptive Control of Individual Channels’ Transmission Power in Femtocells," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 9, pp. 762-771, 9. 2012.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880