EM-based channel estimation algorithms for OFDM
EURASIP Journal on Applied Signal Processing
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
The comparisonal analysis of the concept of rectangular and hexagonal pilot in OFDM
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
A novel OFDM interpolation algorithm based on comb-type pilot
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Channel estimation for OFDM systems using Kalman filter algorithm
Proceedings of the 1st International Conference on Wireless Technologies for Humanitarian Relief
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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 improved performance compared to the conventional linear interpolation filter. OFDM and in particular coded OFDM DAB systems are discussed