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Received: 2005-06-23

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Journal of Zhejiang University SCIENCE A 2006 Vol.7 No.2 P.135~140

10.1631/jzus.2006.A0135


Time-domain clustered transmit power adaptation for OFDM system in fading channels


Author(s):  Gan Xiao-ying, Xu You-yun, Guan Yun-feng, Song Wen-tao

Affiliation(s):  Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200030, China

Corresponding email(s):   ganxiaoying@sjtu.edu.cn

Key Words:  Power adaptation, Orthogonal frequency division multiplexing (OFDM), Time-domain cluster, Coherence time


Gan Xiao-ying, Xu You-yun, Guan Yun-feng, Song Wen-tao. Time-domain clustered transmit power adaptation for OFDM system in fading channels[J]. Journal of Zhejiang University Science A, 2006, 7(2): 135~140.

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author="Gan Xiao-ying, Xu You-yun, Guan Yun-feng, Song Wen-tao",
journal="Journal of Zhejiang University Science A",
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pages="135~140",
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publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2006.A0135"
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%T Time-domain clustered transmit power adaptation for OFDM system in fading channels
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%A Xu You-yun
%A Guan Yun-feng
%A Song Wen-tao
%J Journal of Zhejiang University SCIENCE A
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%D 2006
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2006.A0135

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T1 - Time-domain clustered transmit power adaptation for OFDM system in fading channels
A1 - Gan Xiao-ying
A1 - Xu You-yun
A1 - Guan Yun-feng
A1 - Song Wen-tao
J0 - Journal of Zhejiang University Science A
VL - 7
IS - 2
SP - 135
EP - 140
%@ 1673-565X
Y1 - 2006
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2006.A0135


Abstract: 
This paper proposes a time-domain clustered transmitter power adaptation scheme for orthogonal frequency division multiplexing (OFDM) system, which can significantly reduce the feedback amount during power adaptation comparison with conventional frequency-domain adaptation schemes. It was found that the cluster size plays an important role on the adaptation performance, especially for the vehicular environment. Simulation results showed that using Lagrange interpolation to obtain an explicit curve of Doppler frequency vs cluster size yields good trade-off between the resulted bit error rate (BER) and the amount of feedback.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] Campello, J., 1998. Optimal Discrete Bit Loading for multicarrier Modulation Systems. 1998 IEEE International Symposium on Information Theory 1998. Proceed ings, p.193.

[2] Cheong, Y.W., Cheng, R.S., Lataief, K.B., Murch, R.D., 1999. Multiuser OFDM with adaptive subcarrier, bit, and power allocation. IEEE Journal on Selected Areas in Communications, 17(10):1747-1758.

[3] Chen, H.H., Fan, C.X., Lu, W.W., 2002. China’s perspectives on 3G mobile communications and beyond: TD-SCDMA technology. IEEE Wireless Communications, (2):48-59.

[4] Hanzo, L., Wong, C.H., Yee, M.S., 2002. Adaptive Wireless Transceivers. John Wiley & Sons, Ltd., p.535-584.

[5] Jang, J., Lee, K.B., 2003. Transmit power adaptation for multiuser OFDM systems. IEEE Journal on Selected Areas in Communications, 21(2):171-178.

[6] Jang, J., Lee, K.B., Lee, Y.H., 2002. Frequency-time domain transmit power adaptation for multicarrier system in fading channels. Electronics Letters, 38(5):218-220.

[7] Kivanc, D., Lee, K.B., 2003. Computationally efficient bandwidth allocation and power control for OFDMA. IEEE Transactions on Wireless Communications, 2(6):1150-1158.

[8] Maeda, N., Kishiyama, Y., Atarashi, H., Sawahashi, M., 2003. Variable Spreading Factor-OFCDM with Two Dimensional Spreading that Prioritizes Time Domain Spreading for Forward Link Broadband Wireless Access. Vehicular Technology Conference. The 57th IEEE Semiannual, 1:127-132.

[9] Sandell, M., Wilson, S.K., Borjesson, P.O., 1996. Performance Analysis of Coded OFDM on Fading Channels with Non-ideal Interleaving and Channel Knowledge. Research Report TULEA 1996:20, Div. of Signal Processing, Lulea University of Technology, p.20-40.

[10] Xu, C.Y., 2003. Adaptive Resources Allocation Technique in OFDM System. Master Thesis, Shanghai Jiao Tong University, p.30-59 (in Chinese).

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