Referenced Items are not available for this document.
A method of estimating the channel transfer function is presented for orthogonal frequency division multiplexing (OFDM) mobile communication systems working under time-variant radio channel conditions. The proposed method employs lowpass filtering in a transform domain so that intercarrier interference and additive white Gaussian noise components in the received pilot signals are significantly reduced. The cutoff frequency of the transform-domain filter is dynamically selected by tracking the received pilot signals. The channel transfer function for all the subcarriers is obtained by a high-resolution interpolation realized by zero-padding and DFT/IDFT. The proposed method is applicable for all linear modulation OFDM systems. It is demonstrated with a 16QAM-OFDM system which includes both amplitude and phase modulations
Published in:
Vehicular Technology Conference, 1997, IEEE 47th
(Volume:3
)
Date of Conference: 4-7 May 1997
- Page(s):
- 2089 - 2093 vol.3
- Meeting Date :
- 04 May 1997-07 May 1997
- ISSN :
- 1090-3038
- Print ISBN:
- 0-7803-3659-3
- INSPEC Accession Number:
- 5780686
- Conference Location :
- Phoenix, AZ
- Digital Object Identifier :
- 10.1109/VETEC.1997.605966
- Product Type:
- Conference Publications
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