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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.
키워드
Backward compatibility, Channel estimation, Decision feedback, LTF, WLAN
KSP 제안 키워드
Backward compatibility, Channel estimation(CE), Decision feedback, Error performance, Frame structure, High throughput(HTP), IEEE 802.11n, Legacy system, Multi-input, Multi-output, Multiple input multiple output(MIMO)