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Finite data performance analysis of a sidelobe canceller

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Abstract

The performance of the generalized sidelobe canceller (GSC) is affected by the desired signal (DS) even if all signals are uncorrelated with each other when the DS exists in the received array data with finite snapshot number. Under the condition that the DS is blocked totally in the auxiliary array, a novel expression of the weight vector of the GSC, where the auxiliary array is separated from the main array, is derived for the finite data. Based on the new weight vector, the corresponding expressions of the output signal-to-interference-plus-noise ratio (SINR) can be developed for the case that all signals, including the DS and interference signals, are independent with each other. Then, effects on the SINR for some parameters, including the signal-to-noise ratio, the array antenna number, the direction-of-arrival of the interference signal and the interference-to-noise ratio, are studied, respectively. Some guidelines can thus be obtained for the practical application.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (Nos. 61301262, 61371184) and the Fundamental Research Funds for the Central Universities (No. ZYGX2014J021).

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Authors and Affiliations

  1. School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, Sichuan, China

    Julan Xie, Huiyong Li, Zishu He, Jinfeng Hu & Xu Wang

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  1. Julan Xie
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  2. Huiyong Li
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  3. Zishu He
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  4. Jinfeng Hu
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  5. Xu Wang
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Correspondence to Julan Xie.

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Xie, J., Li, H., He, Z. et al. Finite data performance analysis of a sidelobe canceller. Multidim Syst Sign Process 28, 1737–1756 (2017). https://doi.org/10.1007/s11045-016-0445-9

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  • DOI: https://doi.org/10.1007/s11045-016-0445-9

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