Channel Estimation Scheme for WLAN Systems with Backward Compatibility

ETRI Journal

关键词: backward compatibility;    decision feedback;    LTF;    channel estimation;    WLAN;   

Others  :  1186382
DOI  :  10.4218/etrij.12.0211.0353

【 摘 要 】

IEEE 802.11n standards introduced a mixed-mode format frame structure to achieve higher throughput with multiple antennas while providing backward compatibility with legacy systems. Although multi-input multi-output channel estimation was possible only with high-throughput long training fields (HT-LTFs), the proposed scheme utilizes a legacy LTF as well as HT-LTFs in a decision feedback manner to improve the accuracy of the estimates. It was verified through theoretical analysis and simulations that the proposed scheme effectively enhances the mean square error performance.

   

【 参考文献 】

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