Least Square Estimation of Doubly Selective Wireless Fading Channels

Liu Ying-Nan; Jiang  Wei; Ren  Shu-Bo; Liang  Qing-Lin

doi:10.3724/SP.J.1146.2007.00301

Volume 30 Issue 9

Jan. 2011

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Article Navigation > Journal of Electronics & Information Technology > 2008 > 30(9): 2185-2188

Liu Ying-Nan, Jiang Wei, Ren Shu-Bo, Liang Qing-Lin. Least Square Estimation of Doubly Selective Wireless Fading Channels[J]. Journal of Electronics & Information Technology, 2008, 30(9): 2185-2188. doi: 10.3724/SP.J.1146.2007.00301

Citation:

Liu Ying-Nan, Jiang Wei, Ren Shu-Bo, Liang Qing-Lin. Least Square Estimation of Doubly Selective Wireless Fading Channels[J]. Journal of Electronics & Information Technology, 2008, 30(9): 2185-2188. doi: 10.3724/SP.J.1146.2007.00301

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Least Square Estimation of Doubly Selective Wireless Fading Channels

doi: 10.3724/SP.J.1146.2007.00301

Received Date: 2007-02-28
Rev Recd Date: 2007-09-07
Publish Date: 2008-09-19

Abstract

Abstract

High data rates and high mobility induced Doppler shifts introduce time and frequency selectivity in wireless links. The quality of channel acquisition has a major impact on the overall system performance. In this paper, relying on a basis expansion channel model, a scheme is proposed for estimating doubly selective channel parameters . The receiver does not have to know the statistic information of the channels and will not estimate the power of noise in advance, and has low-complexity. Along with the estimation scheme, the optimal pilot sequence is derived based on minimizing mean-square error of the channel estimation. Simulation results demonstrate the performance of the proposed scheme is better than existing scheme for a range of SNR, where a frequency- selective channel is randomly generated with different Doppler spreads via Jakes model.
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References(1)

References

[1] Choi Y S, Voltz P J, and Cassara F A, On channel estimationand detection for multicarrier signals in fast and selectiveRayleigh fading channels. IEEE Trans. on Commun., 2001,49(8): 1375-1387. [2] Schniter P. Low-complexity estimation of doubly selectivechannels. In Proc. IEEE Workshop Signal ProcessingAdvances in Wireless Commun., Rome, Italy, June 15-18,2003: 200-204. [3] Cavers J K. An analysis of pilot symbol assisted modulationfor Rayleigh fading channels. IEEE Trans. on VehicularTechnology, 1991, 40(4): 686-693. [4] Ma Xiaoli, Giannakis G B, and Ohno S. Optimal training forblock transmissions over doubly-selective wireless fadingchannels. IEEE Trans. on Signal Proc. 2003, 51(5): 1351-1366. [5] Giannakis G B and Tepedelenlioglu C. Basis expansionmodels and diversity techniques for blind identification andequalization of time varying channels[J].Proc. IEEE.1998,86(10):1969-1986 [6] Tsatsanis M K and Giannakis G B. Equalization of rapidlyfading channels: Self-recovering methods[J].IEEE Trans. onCommun.1996, 44(5):619-630

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