Channel - Adaptive Beamforming Method for OFDMA Systems in Frequency - Selective Channels 


Vol. 30,  No. 10, pp. 976-982, Oct.  2005


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  Abstract

In this paper, a channel-adaptive beamforming method is proposed for OFDMA (Orthogonal Frequency Division Multilexing Access) systems with smart antenna, in which the size of a cluster is determined adaptively depending on the frequency selectivity of the channel. The proposed method consists of 4 steps: initial channel estimation, refinement of channel estimates, region-splitting, and computation of weight vector for each region. In the proposed method, the size of a cluster for resource unit is determined adaptively according to a region-splitting criterion. It is shown by simulation that the proposed method shows good performances in both frequency-flat and frequency-selective channels.

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  Cite this article

[IEEE Style]

S. H. Han, K. I. Lee, J. Y. Ahn, Y. S. Cho, "Channel - Adaptive Beamforming Method for OFDMA Systems in Frequency - Selective Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 10, pp. 976-982, 2005. DOI: .

[ACM Style]

Seung Hee Han, Kyu In Lee, Jae Young Ahn, and Yong Soo Cho. 2005. Channel - Adaptive Beamforming Method for OFDMA Systems in Frequency - Selective Channels. The Journal of Korean Institute of Communications and Information Sciences, 30, 10, (2005), 976-982. DOI: .

[KICS Style]

Seung Hee Han, Kyu In Lee, Jae Young Ahn, Yong Soo Cho, "Channel - Adaptive Beamforming Method for OFDMA Systems in Frequency - Selective Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 10, pp. 976-982, 10. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880