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Journal Article Performance of Channel Estimation Methods for OFDM Systems in a Multipath Fading Channels
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Authors
Moon Jae Kyoung, Choi Song In
Issue Date
200002
Source
IEEE Transactions on Consumer Electronics, v.46 no.1, pp.161-170
ISSN
0098-3063
Publisher
IEEE
DOI
https://dx.doi.org/10.1109/30.826394
Project Code
00JR2100, The Joint Development of System Engineering in IMT-2000 WCDMA, Chae Jong- Suk
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