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Performance of Channel Estimation Methods for OFDM Systems in a Multipath Fading Channels
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- Authors
- Jae Kyoung Moon, Song In Choi
- Issue Date
- 2000-02
- Citation
- IEEE Transactions on Consumer Electronics, v.46, no.1, pp.161-170
- ISSN
- 0098-3063
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- In this paper, a Gaussian interpolation filter and cubic interpolation filter are presented as more accurate interpolation filters compared to the conventional linear interpolation filter. In addition to an interpolation filter, a low pass filter using FFT and IFFT is also presented to reduce the noisy components of a channel estimate obtained by an interpolation filter. Channel estimates after low-pass filtering combined with interpolation filters can lower the error floor compared to the use of only interpolation filters. Computer simulation demonstrates that the presented channel estimation methods exhibit an improved performance compared to the conventional linear interpolation filter.
- KSP Keywords
- Channel estimation(CE), Computer simulation(MC and MD), Cubic interpolation, Error floor, Multipath fading channel, OFDM systems, channel estimation methods, improved performance, linear interpolation filter, low-pass filtering