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http://dx.doi.org/10.5573/ieie.2014.51.1.024

Performance Improvement of Retrodirective Antenna System using Turbo Equalizer  

Kim, Bong-Jun (Department of Electronics and Engineering, Chungbuk National University)
Ryu, Heung-Gyoon (Department of Electronics and Engineering, Chungbuk National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.51, no.1, 2014 , pp. 24-30 More about this Journal
Abstract
A digital RDA(Retrodirective Antenna) system is a retransmit system that received signal without prior information turn back by estimated phase of the signal to received direction. The RDA can decrease consumption of power by increase of directivity because signal concentrates on received direction compare to omni-direction antenna which transmit power all direction. Generally, the RDA is known to show better performance than the single-antenna system in multi-path environment. However, the RDA occurs performance degradation in serious ISI channel. In this paper, to solve this problem, we propose retrodirective antenna combined with turbo equalizer combined which can compensate serious ISI channel, we increase the BER performance through proposed retrodirective antenna combined with turbo equalizer in serious ISI channel.
Keywords
Turbo Equalizer; RDA(Retrodirectiva Antenna); Phase conjugation; LLR(Log-Likelihood Ratio); SISO(Soft-Input Soft-Output);
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  • Reference
1 Ji Sun, "A Bandpass Sampling Retrodirective Antenna Array for Time Division Duplex Communications.", M.S thesis, Dalhousie Univ, Halifax, Canada, 2007.
2 R. Koetter, A.C. Singer, and M. Tuchler "Turbo Equalization," IEEE Signal Processing Mag., Vol. 21, No. 1, pp. 67-80, Jan. 2004.   DOI   ScienceOn
3 Douillard, Catherine; Jezequel, Michel; Berrou, Claude, European Transactions on Telecommunications, vol. 6, no. 5, pp. 507-511, September-October. 1995.   DOI   ScienceOn
4 CHENG Xiang, YUAN. Dongfeng, and YU Xiangming, "The Improvement of Turbo Equalization through Using Turbo Codes", International Conference on Communications, Circuits and Systems (ICCCAS) 2005, Vol 1, pp. 124-127, May. 2005.
5 Mauri Nissila and Subbarayan Pasupathy, "Soft-Input Soft-Output Equalizers for Turbo Receivers: A Statistical Physics Perspective" IEEE Transactions on Communications, Vol. 55, No. 7, July. 2007.
6 Van Atta, L. C., "Electromagnetic Reflector," U.S. Patent No. 2,908,002, Oct. 6, 1959.
7 C. Pon, "Retrodirective array using the heterodyne technique", IEEE Trans. Antennas & Propagat., Vol. 12, No. 2, pp. 176-180, Mar. 1964.   DOI
8 C. Loadman and Z. Chen, "A Study of Retrodirective Array Performance in the Presence of Multipath", Proceedings Second Annual Conference on Communication Networks and Services, pp. 56-60, May. 2004.
9 A. Warrier, Z. Chen, and C. Loadman, "Experimental Study of the Retrodirective Antenna Array System in a Multipath Environment," in 6th Ann. Commun. Netw. Services Res. Conf., pp. 449-452, May 5-8, 2008.
10 M. Tucher, R. Koetter, and A.C. Singer, "Turbo Equalization: Principles and New Results", IEEE Transactions on Communications, Vol.50, No.5, pp. 754-767, May 2002.   DOI   ScienceOn
11 R.Y Miyamoto and T. Itoh, "Retrodirective Arrays for Wireless Communications.", IEEE Microwave Magazine, Vol. 3, No. 1, pp. 71-79, March. 2002.