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학술지 Channel Estimation Scheme for WLAN Systems with Backward Compatibility
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저자
김지훈, 유희정, 이석규
발행일
201205
출처
ETRI Journal, v.34 no.3, pp.450-453
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.12.0211.0353
협약과제
11MI1800, IEEE 802.11 VHT 초고속 무선랜 무선전송 연구, 이석규
초록
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. © 2012 ETRI.
KSP 제안 키워드
Backward compatibility, Channel estimation(CE), Decision feedback, Error performance, Frame structure, High throughput(HTP), IEEE 802.11n, Legacy Systems, Multi-input, Multi-output, Multiple input multiple output(MIMO)