Preamble Design for OFDM-based WLAN Systems with Multiple Transmit/Receive Antennas 


Vol. 29,  No. 2, pp. 202-213, Feb.  2004


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  Abstract

In this paper, we propose a preamble structure and synchronization/channel estimation method for OFDM-based multiple antenna WLAN systems that have 200Mbps transmit rate. With the proposed preamble structure, multiple. antenna WLAN systems are backward-compatible with IEEE 802.11a systems which use the same 5GHz band and synchronization performance is better than that of single antenna OFDM systems. For channel estimation. the preamble overhead is small and performance degradation by timing synchronization error that causes the critical problem of conventional comb-type multiple antenna channel estimation method also can be minimized by frequency domain phase recovery. Synchronizer and channel estimator for proposed preamble structure are implemented and verified using Verilog HDL. For the system with 4 transmit antennas and 4 receive antennas, about 150K gates arc needed for synchronizer and 12K gates for channel estimator.

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  Cite this article

[IEEE Style]

S. Lee, Y. Jung, J. Kim, "Preamble Design for OFDM-based WLAN Systems with Multiple Transmit/Receive Antennas," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 2, pp. 202-213, 2004. DOI: .

[ACM Style]

Seogoo Lee, Yunho Jung, and Jaeseok Kim. 2004. Preamble Design for OFDM-based WLAN Systems with Multiple Transmit/Receive Antennas. The Journal of Korean Institute of Communications and Information Sciences, 29, 2, (2004), 202-213. DOI: .

[KICS Style]

Seogoo Lee, Yunho Jung, Jaeseok Kim, "Preamble Design for OFDM-based WLAN Systems with Multiple Transmit/Receive Antennas," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 2, pp. 202-213, 2. 2004.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880