2NEGI R, CIOFFI J. Pilot tone selection for channel estimation in a mobile OFDM system[J]. IEEE Transactionson Consumer Electronics, 1998, 44(3):1122-1128.
3YANG B G, LETAIEF K B, CHENG R S, et al .Windowed DFT based pilot-symbol-aided channel estimation for OFDM systems in multipath fading channels[A]. Proc IEEE VTC' 2000 [C]. 2000. 1480-1484.
4EDFORS O, SANDELL M, VAN D B, et al. Analysis of DFT-based channel estimators for OFDM[J]. WirelessPersonal Communications, 2000, 12(1):55-70.
5YANG B G, CAO Z G, LETAIEF K B. Analysis of lowcomplexity windowed DFT-based MMSE channelestimator for OFDM system[J]. IEEE Transactions on Commu nications, 2001,49(11): 1977-1987.