Abstract
This letter considers the channel estimation for subband orthogonal frequency division multiple access (OFDMA) operating over highly time-frequency selective (i.e., doubly selective) channels. Based on general basis expansion model, two expectation maximization-type channel estimation methods are proposed for subband OFDMA in order to overcome channel time-frequency selectivity. The proposed method is compared with conventional approach and is shown to be superior to the conventional one.
Similar content being viewed by others
References
Ma Y, Tafazolli R. Channel estimation for OFDMA uplink: a hybrid of linear and BEM interpolation approach. IEEE Trans Signal Proces, 2007, 55: 1568–1573
Na C, Obradovic D, Szabo A. EM based channel estimation method for MIMO-OFDM systems. Eur Trans Telecommun, 2008, 19: 907–916
Wang J, Milstein L B. CDMA overlay situations for microcellular mobile communications. IEEE Trans Commun, 1995, 43: 603–614
Hou W, Ye W, Feng S, et al. Iterative channel estimation and successive ICI cancellation for OFDM systems over doubly selective channels. Wireless Pers Commun, 2009, 55: 289–303
Dempster A P, Laird N M, Rubin D B. Maximum-likelihood from incomplete data via the EM algorithm. J Roy Stat Soc, 1977, 39: 1–38
Xie Y, Georghiades C N. Two EM-type channel estimation algorithms for OFDM with transmitter diversity. IEEE Trans Commun, 2003, 51: 106–115
Ma X, Kobayashi H, Schwartz S C. EM-based channel estimation algorithms for OFDM. Eurasip J Appl Signal Process, 2004, 10: 1460–1477
Al-Naffouri T Y. An EM-based forward-backward Kalman filter for the estimation of time-variant channels in OFDM. IEEE Trans Signal Proces, 2007, 55: 3924–3930
Gao J, Liu H. Low-complexity MAP channel estimation for mobile MIMO-OFDM systems. IEEE Trans Wirel Commun, 2008, 7: 774–780
Wang M, Goodwin G C, Quevedo D E. EM-based receiver design for uplink MIMO-OFDMA systems. In: Proceedings of IEEE ICC. Beijing: IEEE Press, 2008. 4516–4520
Ylioinas J, Juntti M. Iterative joint detection, decoding, and channel estimation in turbo-coded MIMO-OFDM. IEEE Trans Veh Technol, 2009, 58: 1784–1796
Dogan H, Panayirci E, Vincent Poor H. Low-complexity joint data detection and channel equalization for highly mobile orthogonal frequency division multiplexing systems. IET Commun, 2010, 4: 1000–1011
Visintin M. Karhunen-Loeve expansion of a fast Rayleigh fading process. Electron Lett, 1996, 32: 1712–1713
Teo K A D, Ohno S. Optimal MMSE finite parameter model for doubly selective channels. In: Proceedings of IEEE Globecom. St Louis: IEEE Press, 2005. 3503–3507
Alamouti S M. A simple transmit diversity technique for wireless communications. IEEE J Sel Area Comm, 1998, 16: 1451–1458
Zheng Y R, Xiao C. Simulation models with correct statistical properties for Rayleigh fading channels. IEEE Trans Commun, 2003, 51: 920–928
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Chen, D., Qiu, H. Doubly selective channel estimation for subband OFDMA using basis expansion models. Sci. China Inf. Sci. 54, 2113–2123 (2011). https://doi.org/10.1007/s11432-011-4392-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11432-011-4392-7