Abstract
In this paper, we proposed a channel estimation method by impulse signal train in OFDM. In order to estimate the channel response, 4 impulse signals are generated and transmitted during one OFDM (Orthogonal Frequency Division Multiplexing) symbol. The intervals between the impulse signals are all equal in time domain. At the receiver, the impulse response signals are summed and averaged. And then, the averaged impulse response signal is zero padded and fast Fourier transformed to obtain the channel estimation. The BER performance of the proposed method is compared with those of conventional channel estimation method using the long training sequence in fast fading environments. The simulation results show that the proposed method improves by 3 dB in terms of Eb/No, compared with the conventional method.
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References
Terry, J., Heiskala, J.: OFDM Wireless LANs: A Theoretical and Practical Guide. Sams Publishing (2002)
Saleh, A.M., Valenzuela, R.A.: A Statistical Model for Indoor Multipath Propagation. IEEE J. on Selected Areas in commum. 5(2), 128–137 (1987)
Edfors, O., Sandell, M., van de Be, J.-J., et al.: OFDM Channel Estimation by Singular Value Decomposition. IEEE Trans. Commun. 46, 931–939 (1998)
van de Beek, J.-J., Edfors, O., et al.: On Channel Estimation in OFDM Systems. In: IEEE VTC 1995, pp. 815–819 (1995)
Minn, H., Bhargava, V.K.: DFT-based Channel Estimation in 2D-pilot-symbol-aided OFDM Wireless Systems. In: IEEE VTC 2001, pp. 810–814 (2001)
Tufvesson, F., Maseng, T.: Pilot Assisted Channel Estimation for OFDM in Mobile Cellular Systems. In: Proc. VTC, pp. 1639–1643 (1997)
Weste, N., Skellern, D.J.: VLSI for OFDM. IEEE Commun., Mag. 36, 127–131 (1998)
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© 2005 Springer-Verlag Berlin Heidelberg
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Jeon, HG., Lee, H., Choi, WC., Oh, HS., Cho, KR. (2005). A Study on the Enhanced Detection Method Considering the Channel Response in OFDM Based WLAN. In: Huang, DS., Zhang, XP., Huang, GB. (eds) Advances in Intelligent Computing. ICIC 2005. Lecture Notes in Computer Science, vol 3645. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11538356_70
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DOI: https://doi.org/10.1007/11538356_70
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-28227-3
Online ISBN: 978-3-540-31907-8
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