|Table of Contents|

[1] Song Tiecheng, You Xiaohu, Shen Lianfeng, Song Xiaojin, et al. Adaptive channel estimation based on pilot signalsand transform-domain processing in SISO/MIMO OFDM systems [J]. Journal of Southeast University (English Edition), 2005, 21 (3): 249-253. [doi:10.3969/j.issn.1003-7985.2005.03.001]
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Adaptive channel estimation based on pilot signalsand transform-domain processing in SISO/MIMO OFDM systems()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
21
Issue:
2005 3
Page:
249-253
Research Field:
Information and Communication Engineering
Publishing date:
2005-09-30

Info

Title:
Adaptive channel estimation based on pilot signalsand transform-domain processing in SISO/MIMO OFDM systems
Author(s):
Song Tiecheng You Xiaohu Shen Lianfeng Song Xiaojin
National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
Keywords:
adaptive channel estimation orthogonal frequency division multiplex(OFDM) transmit diversity
PACS:
TN914.3
DOI:
10.3969/j.issn.1003-7985.2005.03.001
Abstract:
Based on the transform-domain characteristics of pilot signals, a band suppression filter is used as a transform-domain filter to restrain the interference of noise in channel estimation.The performance effect on channel estimation for an orthogonal frequency division multiplex(OFDM)system by different energy coefficients in the transform domain and the energy coefficient under the different signal-to-noise ratios(SNR)are also analyzed.A new energy coefficient expression is deduced.It is theoretically proven that dynamically selecting an energy coefficient can significantly improve the performance of channel estimation.Simulation results show that the proposed algorithm can achieve better performance close to the theoretic bounds of perfect channel estimation. The algorithm is adapted to single-input single-output(SISO)OFDM and multi-input multi-output(MIMO)OFDM systems.

References:

[1] Bölcskei H, Gesbert D, Paulraj A J.On the capacity of OFDM based spatial multiplexing systems [J].IEEE Transactions on Communication, 2002, 50(11):225-234.
[2] Kang Seog Geun, Ha Yong Min, Joo Eon Kyeong.A comparative investigation on channel estimation algorithms for OFDM in mobile communications [J].IEEE Transactions on Broadcasting, 2003, 49(2):142-149.
[3] Song Won-Gyu, Lim Jong-Tae.Pilot-symbol aided channel estimation for OFDM with fast fading channels[J].IEEE Transactions on Broadcasting, 2003, 49(4):398-402.
[4] Coleri S, Ergen M, Puri A, et al.Channel estimation techniques based on pilot arrangement in OFDM systems[J].IEEE Transactions on Broadcasting, 2002, 48(3):223-229.
[5] Geoffrey Li Y.Simplified channel estimation for OFDM systems with multiple transmit antennas [J].IEEE Transactions on Wireless Communications, 2002, 1(1):67-75.
[6] Shin Myeongchoel, Lee Hakju, Lee Chungyong.Enhanced channel-estimation technique for MIMO OFDM systems[J].IEEE Transactions on Vehicular Technology, 2004, 53(1):261-265.
[7] Geoffrey Li Y, Winters Jack H, Sollenberger Nelson R.MIMO OFDM for wireless communications:signal detection with enhanced channel estimation[J].IEEE Transactions on Communications, 2002, 50(9):1471-1477.
[8] Zhao Yuping, Huang Aiping.A novel channel estimation method for OFDM mobile communication systems based on pilot signals and transform-domain processing [A].In:Proceedings of IEEE VTC [C].Phoenix, AZ, USA, 1997.2089-2093.
[9] Barhumi Imad, Leus Geert, Moonen Marc.Optimal training design for MIMO OFDM systems in mobile wireless channels [J].IEEE Transactions on Signal Processing, 2003, 51(6):1615-1624.
[10] Alamouti S M.A simple transmit diversity technique for wireless communications [J].IEEE Journal on Selected Areas in Communications, 1998, 16(8):1451-1458.
[11] Hoeher P, Kaiser S, Robertson P.Pilot-symbol-aided channel estimation in time and frequency [A].In:The Sixth Communication Theory Mini-Conference Conjunction with IEEE GLOBECOM’97[C].Phoenix, AZ, USA, 1997.90-96.
[12] Saleh A, Valenzuela R.A statistical model for indoor multipath propagation[J].IEEE Journal on Selected Areas in Communications, 1987, 5(2):128-137.

Memo

Memo:
Biographies: Song Tiecheng(1967—), male, professor, songtc@seu.edu.cn;You Xiaohu(1962—), male, doctor, professor, xhyu@seu.edu.cn.
Last Update: 2005-09-20