[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(
)
)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:
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[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.