Publications
Detailed Information
Design of implementation-efficient channel estimation filter for wireless OFDM transmission
Cited 0 time in
Web of Science
Cited 0 time in Scopus
- Authors
- Issue Date
- 2003-04-04
- Citation
- VTC 2003-Spring. The 57th IEEE Semiannual Vehicular Technology Conference, vol. 3, pp. 1590-1594, 2003
- Keywords
- OFDM ; channel estimation
- Abstract
- The detection performance of coherent OFDM receiver significantly depends on the accuracy of channel estimation. The accuracy of channel estimation can be improved by properly post-processing the channel estimate using a so called channel estimation filter (CEF). Linear minimum mean-squared error (MMSE) filter is optimum as the CEF, but it may not practical due to implementation complexity. We consider the use of a reduced-complexity CEF whose tap coefficient is real valued and symmetrically weighted (RSW). The optimum RSW CEF is analytically designed using the multi-path intensity profile and SNR of the channel. We also propose a method to adapt the coefficient of the RSW CEF to the channel condition. Numerical results show that the proposed RSW CEF can provide channel estimation performance comparable to that of a linear MMSE filter, while significantly reducing the computational complexity. In addition, the proposed RSW CEF can provide performance robust to unknown timing offset with a fractional dB loss compared to the optimum one.
- Language
- English
- Files in This Item:
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.