2014 12th International Conference on Frontiers of Information Technology (FIT) (2014)
Dec. 17, 2014 to Dec. 19, 2014
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/FIT.2014.20
In this paper channel estimation techniques for a Single Input Single Output - Orthogonal frequency division multiplexing (SISO-OFDM) communication system has been studied. The attainable performance of Sample-Spaced (SS) Decision Directed Channel Estimation (DDCE) and Fractionally-Spaced (FS) DDCE technique is analyzed. It is shown that the performance of FS-Channel Impulse Response (CIR) based DDCE scheme is better than its SS-CIR based DDCE scheme. The performance of these schemes is also compared with the benchmark Ideal Channel Estimation (ICE). The performance of DDCE-SS-CIR for different values of normalized Doppler frequency is also presented. The work is also extended to include (2 x 2) MIMO-OFDM.
OFDM, Channel estimation, Mathematical model, Doppler effect, Bit error rate, Ice, MIMO
H. M. Madni, B. Ali and M. F. Butt, "Study and Analysis of Channel Estimation Techniques for OFDM Based Wireless Communication Systems," 2014 12th International Conference on Frontiers of Information Technology (FIT), Islamabad, Pakistan, 2014, pp. 56-60.