Estimation of channel temporal auto-correlation and coherence time based on propagation paths

Xuefeng Yin; Junhe Zhou; Byung-Jae Kwak; Hyun Kyu Chung

5th International ICST Conference on Communications and Networking in China

Research Article

Estimation of channel temporal auto-correlation and coherence time based on propagation paths

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@INPROCEEDINGS{10.4108/chinacom.2010.11,
    author={Xuefeng Yin and Junhe Zhou and Byung-Jae Kwak and Hyun Kyu Chung},
    title={Estimation of channel temporal auto-correlation and coherence time based on propagation paths},
    proceedings={5th International ICST Conference on Communications and Networking in China},
    publisher={IEEE},
    proceedings_a={CHINACOM},
    year={2011},
    month={1},
    keywords={Wireless channel propagation path Doppler frequency channel temporal auto-correlation channel coherence time SAGE algorithm},
    doi={10.4108/chinacom.2010.11}
}

Xuefeng Yin
Junhe Zhou
Byung-Jae Kwak
Hyun Kyu Chung
Year: 2011
Estimation of channel temporal auto-correlation and coherence time based on propagation paths
CHINACOM
ICST
DOI: 10.4108/chinacom.2010.11

Xuefeng Yin¹^,*, Junhe Zhou¹^,*, Byung-Jae Kwak²^,*, Hyun Kyu Chung²^,*

1: School of Electronics and Information Engineering, Tongji University, Shanghai, China
2: Electronics and Telecommunications Research Institute, Daejeon, Republic of Korea

*Contact email: yinxuefeng@tongji.edu.cn, jhzhou@tongji.edu.cn, bjkwak@etri.re.kr, hkchung@etri.re.kr

Abstract

In this contribution, we investigate the applicability of using multiple propagation paths to estimate the temporal auto-correlation function and the coherence time of wireless propagation channels. The Space-Alternating Generalized Expectation-maximization (SAGE) algorithm is applied for extracting the paths from measurement data. It is found that the channel auto-correlation function and coherence time computed based on the path parameters are biased. A simple method is proposed for correction of the biases. Experimental investigations are conducted to evaluate the effectiveness of the method.

Keywords: Wireless channel propagation path Doppler frequency channel temporal auto-correlation channel coherence time SAGE algorithm

Published: 2011-01-10
Publisher: IEEE

: http://dx.doi.org/10.4108/chinacom.2010.11