Abstract
A novel simply-structured hybrid smart antenna system suitable to be used in ad-hoc network terminals is proposed in this letter. The super-resolution beamforming algorithm is also presented based on the system using DOA estimation results. The algorithm can switch the beamforming to the direction of the expected signal and get the best transmitting performance after the pre-beamforming of the Butler matrix. The shifting value formulas are presented to obtain the best SNR when there is no interfering signal and to acquire the highest Signal to Interference Ratio (SIR) as there is one interfering signal. When there are more than one interfering signals, the pre-beamforming feature of the Butler matrix can also suppress the interfering signals. Simulation results verified the algorithm.
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Supported by National Natural Science Foundation of China (NSFC) (No.60402005).
Communication author: Guo Li, born in 1968, female, doctoral student, associate professor. School of Information Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China.
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Guo, L., Guo, Y. & Li, N. A novel super-resolution beamforming algorithm. J. of Electron.(China) 24, 406–411 (2007). https://doi.org/10.1007/s11767-006-0210-6
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DOI: https://doi.org/10.1007/s11767-006-0210-6