A Low Complexity DFT Based Channel Estimation Method for OFDM Systems

[1] Proakis J G. Digital Communications. Prentice-Hall, 3rd edition, 1995. [2] Wilson K R and Cioffi M. 16-QAM modulation with orthogonal frequency-division multiplexing in a Rayleigh- fading environment. In Proc. VTC, Stockholm, Sweden, 1994: 1660-1664. [3] Santella G. A frequency requency and symbol synchronization system of OFDM signals: Architecture and simulation results, IEEE Trans[J].on Veh. Technol.2000, 49:254-275 [4] Sari H, Karam G, and Jeanclaude I. Transmission techniques for digital terrestrial TV broadcasting. IEEE Commun. Mag, 1995, 33(2): 100-109. [5] Edfors O, Sandell M, and Van De Beek J J, et al.. Analysis of DFT-based channel estimators for OFDM [J].Wireless Personal Communications.2000, 12(1):55-70 [6] Yang B, Cao Z, and Letaief K B. Low-complexity channel estimator based on windowed DFT and scalar Wiener filter for OFDM systems. In Proc. IEEE ICC2001, Helsinki, 2001, vol. 6: 1643-1647. [7] Auer G, Dammann A, and Sand S. Channel estimation for OFDM systems with multiple transmit antennas by exploiting the properties of the discrete Fourier transform, personal, indoor and mobile radio communications, The 14th IEEE Proceedings on Sept. 2003, vol.2: 1954-1958. [8] Atarashi H, Abeta S, and Sawahashi M. Variable spreading factor orthogonal frequency and code division multiplexing (VSF-OFCDM) for broadband packet wireless access. IEICE Trans. Commun., 2003, E86-B (1): 291-299. [9] IST-2001-32620 MATRICE D1.3. [10] Maeda N, Atarashi H, Abeta S, and Sawahashi M. Pilot channel assisted MMSE combining in forward link for broadband OFCDM packet wireless access [J]. IEICE Trans. Commun., 2002, E85-A (7): 1635-1646.