Multi-Cell Transmit Diversity Scheme for OFDMA Systems 


Vol. 37,  No. 9, pp. 721-727, Sep.  2012


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  Abstract

Since a conventional multi-cell transmit diversity scheme depends on the feedback from the user for the channel gain information, its performance gets to severely degrade when the channel varies fast due to the high mobility of the user. Also, transmit power of the base station cannot be fully used in the conventional scheme because only one transmit antenna is used for data transmission. In this paper, we propose a multi-cell transmit diversity scheme appropriate for fast fading channel. In the proposed scheme, channel-independent precoding vector is applied over all transmit antennas and different precoding vectors are applied for neighboring subcarriers so that the received signal is avoided to experience deep fading over multiple neighboring subcarriers. Simulation results show that the proposed scheme has better detector output signal-to-noise ratio (SNR) and bit error rate (BER) performances than the conventional scheme.

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  Cite this article

[IEEE Style]

B. Seo, "Multi-Cell Transmit Diversity Scheme for OFDMA Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 9, pp. 721-727, 2012. DOI: .

[ACM Style]

Bangwon Seo. 2012. Multi-Cell Transmit Diversity Scheme for OFDMA Systems. The Journal of Korean Institute of Communications and Information Sciences, 37, 9, (2012), 721-727. DOI: .

[KICS Style]

Bangwon Seo, "Multi-Cell Transmit Diversity Scheme for OFDMA Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 9, pp. 721-727, 9. 2012.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880