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http://dx.doi.org/10.7840/kics.2014.39A.5.251

Design and Evaluation of Hybrid Digital Retrodirective Array Antenna System  

Park, Hae-Gyu (Department of Electronic Engineering, Chungbuk National University)
Ryu, Heung-Gyoon (Department of Electronic Engineering, Chungbuk National University)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.39A, no.5, 2014 , pp. 251-257 More about this Journal
Abstract
Digital RDA system is retransmit into the opposite direction of the incident signals. Digital RDA system have a disadventage that this system do not signal classification in multipath environment. because multipath signal is shown as vector sum of multipath signal, digital RDA system required complex signal process for multipath signal classification. In this paper, to solve these problem we propose hybrid digital RDA system which combination of the MUSIC algorithm and the digital RDA system. Proposed system has two modes. First mode is digital RDA mode. Secornd mode is digital beamforming mode. Digital RDA mode is used in situations where the less the impact of multipath. Digital beamforming mode is applied to multipath effects is greater. In secornd mode, we find optimal path using MUSIC algorithm. After than the proposed system uses only the optimal path. Through the proposed system in a multipath environment with digital RDA can be used to supplement a disadvantage.
Keywords
Digital RDA; Digital beamforming; MUSIC algorithm; Resolution;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 C. Pon, "Retrodirective array using the heterodyne technique," IEEE Trans. Antennas & Propagat., vol. 12, no. 2, pp 176-180, Mar. 1964.   DOI
2 J. Sun, "A bandpass sampling retrodirective antenna array for time division duplex communications," M.A.Sc. Thesis, Dalhousie University, Halifax, NS, Canada, 2007.
3 J. Sun, X. Zeng, and Z. Chen, "A direct RF-undersampling retrodirective array system," in Proc. IEEE RWS, pp. 631-634, Jan. 2008.
4 J. Wang, Y. Zhao, and Z. Wang, "A MUSIC like DOA estimation method for signals with low SNR," Millimeter Waves, GSMM, pp. 321-324, Nanjing, Apr. 2008.
5 R. Y. Miyamoto and T. Itoh, "Retrodirective arrays for wireless communications," IEEE Microwave Mag., vol. 3, no. 1, pp. 71-79, 2002.
6 J. Sun, X. Zeng, and Z. Chen, "A direct RF-undersampling retrodirective array system," in Proc. IEEE RWS, pp. 631-634, Jan. 2008.
7 E. D. Sharp and M. Diab, "Van atta reflector array," IRE Trans. Antennas and Propagation, vol. 8, no. 4, pp. 436-438, Jul. 1960.   DOI
8 R. Y. Miyamoto, Y. Qian, and T. Itoh, "A reconfigurable active retrodirective/direct conversion receiver array for wireless sensor systems," in IEEE MTT-S Int. Microwave Symp. Dig., Phoenix, AZ, vol. 2, pp. 1119-1122, May 2001.
9 J. Bok, S. H. Lee, D. J. Shin, and H.-G. Ryu, "Analysis of Performance of Digital Retrodirective Antenna Technology in High-Speed Rail," J. KIEES, vol. 23, no. 11, pp. 1264-1271, Nov. 2012.   과학기술학회마을   DOI   ScienceOn