[1] Qi Chenhao, Wu Lenan,. Digital broadcast channel estimation with compressive sensing [J]. Journal of Southeast University (English Edition), 2010, 26 (3): 389-393. [doi:10.3969/j.issn.1003-7985.2010.03.004]

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Digital broadcast channel estimation with compressive sensing()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

26

Issue:

2010 3

Page:

389-393

Research Field:

Information and Communication Engineering

Publishing date:

2010-09-30

Info

Title:

Digital broadcast channel estimation with compressive sensing

Author(s):

Qi Chenhao;  Wu Lenan

School of Information Science and Engineering, Southeast University, Nanjing 210096, China

Keywords:

channel estimation;  compressive sensing(CS);  digital radio mondiale(DRM);  orthogonal frequency division multiplexing(OFDM)

PACS:

TN911.5

DOI:

10.3969/j.issn.1003-7985.2010.03.004

Abstract:

In order to reduce the pilot number and improve spectral efficiency, recently emerged compressive sensing(CS)is applied to the digital broadcast channel estimation. According to the six channel profiles of the European Telecommunication Standards Institute(ETSI)digital radio mondiale(DRM)standard, the subspace pursuit(SP)algorithm is employed for delay spread and attenuation estimation of each path in the case where the channel profile is identified and the multipath number is known. The stop condition for SP is that the sparsity of the estimation equals the multipath number. For the case where the multipath number is unknown, the orthogonal matching pursuit(OMP)algorithm is employed for channel estimation, while the stop condition is that the estimation achieves the noise variance. Simulation results show that with the same number of pilots, CS algorithms outperform the traditional cubic-spline-interpolation-based least squares(LS)channel estimation. SP is also demonstrated to be better than OMP when the multipath number is known as a priori.

References:

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Memo

Memo:

Biographies: Qi Chenhao(1981—), male, doctor, lecturer; Wu Lenan(corresponding author), male, doctor, professor, wuln@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.60872075), the National High Technology Research and Development Program of China(863 Program)(No.2008AA01Z227).
Citation: Qi Chenhao, Wu Lenan. Digital broadcast channel estimation with compressive sensing [J].Journal of Southeast University(English Edition), 2010, 26(3):389-393.

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