Feedback Reduction Scheme in OFDMA Multicast Environment 


Vol. 35,  No. 10, pp. 960-967, Oct.  2010


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  Abstract

In this paper we propose a feedback reduction scheme in OFDMA multicast environment. In a multicast environment, the base station sends same information to each group simultaneously. Service rate should be determined based on the user who has the worst channel condition in the group. Therefore, if we know the correct channel state of the user who has the worst channel, we can decide the transmission rate irrespective of other users’ channel states. Based on this idea, we propose the method to abate the overall feedback with slight loss of performance by reducing the feedback of the users whose channel condition is statistically good. We can confirm by the simulation result that proposing scheme shows similar performance to the full feedback scheme and remarkably reduced the feedback.

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  Cite this article

[IEEE Style]

Y. Yoo, S. Ko, B. Lee, "Feedback Reduction Scheme in OFDMA Multicast Environment," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 10, pp. 960-967, 2010. DOI: .

[ACM Style]

Yung-Jun Yoo, Soo-Min Ko, and Byeong-Gi Lee. 2010. Feedback Reduction Scheme in OFDMA Multicast Environment. The Journal of Korean Institute of Communications and Information Sciences, 35, 10, (2010), 960-967. DOI: .

[KICS Style]

Yung-Jun Yoo, Soo-Min Ko, Byeong-Gi Lee, "Feedback Reduction Scheme in OFDMA Multicast Environment," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 10, pp. 960-967, 10. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880