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Journal Article
Channel Estimation Scheme for WLAN Systems with Backward Compatibility
- Authors
- Jee-Hoon Kim, Heejung Yu, Sok-Kyu Lee
- Issue Date
- 2012-05
- Citation
- ETRI Journal, v.34, no.3, pp.450-453
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- 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 Keywords
- 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)