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Is combining efficiency a proper performance evaluation criterion for antenna arraying?
Author(s): Chaowei Duan; Yafeng Zhan; Qian Kong
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Paper Abstract

Antenna arraying is widely implemented for deep space applications currently. A number of combining algorithms have been proposed for antenna array systems, where the difference of carrier frequency, delay and carrier phase between the received signals from different antennas, are estimated and compensated. The performance of these combining algorithms is evaluated using combining efficiency which is directly related to the signal-to-noise ratio (SNR) of the received signal from each antenna and the combined signal. However, the ultimate goal of antenna arraying is to obtain a better bit error rate (BER) performance. In this paper, the impact of signal alignment error, i.e. carrier frequency estimation error, delay estimation error and carrier phase estimation error, on the combining efficiency and the BER of the combined signal are analyzed. Computer simulations proved that positive combining efficiency doesn’t guarantee better BER performance. As a result, combining efficiency may not be a proper performance evaluation criterion for antenna arraying.

Paper Details

Date Published: 17 April 2019
PDF: 8 pages
Proc. SPIE 11071, Tenth International Conference on Signal Processing Systems, 1107108 (17 April 2019); doi: 10.1117/12.2520436
Show Author Affiliations
Chaowei Duan, Beijing National Research Ctr. for Information Science and Technology (China)
Tsinghua Univ. (China)
Yafeng Zhan, Beijing National Research Ctr. for Information Science and Technology (China)
Tsinghua Univ. (China)
Qian Kong, Beijing National Research Ctr. for Information Science and Technology (China)
Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 11071:
Tenth International Conference on Signal Processing Systems
Kezhi Mao; Xudong Jiang, Editor(s)

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