Adaptive beamforming algorithm for an OFDM system with Pre-FFT beamfomer 


Vol. 27,  No. 10, pp. 935-943, Oct.  2002


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  Abstract

In this paper, a new pre-fast Fourier transformation (FFfT) adaptive beamformer and algorithm is proposed for an onhogonal frequency division multiplexing (OFDM) system with an adaptive array antenna. The proposed pre-FFT beamforming algorithm for OFDM system can significantly improve BER performance and reduce complexity as the proposed algorithm requires only one processor. The proposed algorithm for adaptive beamforming in an OFDM system is derived, by calculating the error signals in the frequency domain, updating the filter coefficients of the adaptive beamformer in time-domain by using the error signal. BER performance improvement and convergence behavior of the proposed approach are investigated through computer simulation by applying it to the conventional OFDM system in multipath fading channel.

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  Cite this article

[IEEE Style]

C. K. Kim, "Adaptive beamforming algorithm for an OFDM system with Pre-FFT beamfomer," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 10, pp. 935-943, 2002. DOI: .

[ACM Style]

Chan Kyu Kim. 2002. Adaptive beamforming algorithm for an OFDM system with Pre-FFT beamfomer. The Journal of Korean Institute of Communications and Information Sciences, 27, 10, (2002), 935-943. DOI: .

[KICS Style]

Chan Kyu Kim, "Adaptive beamforming algorithm for an OFDM system with Pre-FFT beamfomer," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 10, pp. 935-943, 10. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880