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A Bi-directional Coding using Time Reversal Mirror in Relay Systems  

Kwon, Yang-Soo (인하대학교 전자공학과 무선이동통신 연구실)
Yoo, Jae-Ho (인하대학교 전자공학과 무선이동통신 연구실)
Kim, Hyeon-Su (인하대학교 전자공학과 무선이동통신 연구실)
Chung, Jae-Hak (인하대학교 전자공학과 무선이동통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.33, no.12A, 2008 , pp. 1156-1164 More about this Journal
Abstract
In this paper, we propose a bi-directional coding method (BTC) using time reversal mirror for effective data exchange between mobile stations and basestations. In conventional relay systems, while one node transmits data, other nodes should keep silent to avoid interference. Thus, to interchange data between basestations and mobile stations, it needs four stages. However, using the proposed BTC method, a relay station transmits a probe source before data transmission, and using this information, mobile stations and basestations transmit data to the relay station simultaneously. Therefore, since it exchanges data in only two steps, the system achieves improved system capacity. In addition, owing to no need for complex calculation, the relay system can be implemented with low complexity. The simulation results demonstrate that the proposed method achieves enhanced system capacity.
Keywords
Bi-directional coding; Time reversal mirror; Relay system; capacity;
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1 A. Rudolf, N. Cai, S. Li and R. Yeung 'Network Information Flow,' IEEE Trans. on Inf. Theory, Vol.46, pp.1004-1016, Jul 2000
2 G. Kramer and S. A. Savari, 'Cut sets and information flow in networks of two-way channels,' in Proc. of IEEE International Symposium on Information Theory (ISIT '04), Chicago, IL, June 2004
3 A. Sendonaris, 'Advanced Techniques for Next-Generation Wireless Systems,' Ph.D Dissertation, Rice University, Aug. 1999
4 S. W. Peters and R. W. Heath, 'The Future of WiMAX: Multihop Relaying with IEEE 802.16j,' submitted to IEEE Comm. Mag., Jan. 2008
5 P. Larsson, N. Johansson, and K.-E. Sunell, 'Coded bi-directional relaying,' in Proc. of IEEE 63rd Vehicular Technology Conference (VTC '06), Vol.2, pp.851-855, Melbourne, Australia, May 2006
6 P. Parker, D. Bliss, P. Mitran and V. Tarokh, 'On Bounds and Algorithms for Frequency Synchronization for Collaborative Communications Systems,' submitted to IEEE Trans. on Signal Proc., Apr. 2007
7 M. Fink, 'Time reversal of ultrasonic fields. I. Basix principles,' IEEE Trans. on Ultrasonics, Ferroeletrics and Frequency Control, Vol.39, No.5, pp.555-566, Sept. 1992   DOI   ScienceOn
8 Z. Li and B. Li, 'Network coding in undirected networks,' in Proc. of the 38th Annual Conference on Information Sciences and Systems (CISS '04), Princeton, NJ, March 2004
9 J. Hansen, D. Baum and A. Paulraj, 'Design approach for a Time Reversal Test Bed for Radio Channels,' in Proc. of the 12th European Signal Processing Conference (EUSIPCO '08), Sept. 2004
10 C. Oestges, J. Hansen, S. Emami S, A. Kim, G. Papanicolaou and A. Paulraj, 'Time Reversal Techniques for Broadband Wireless Communication Systems,' in Proc. of European Microwave Conference (EuMC '04), pp.49-66, Oct. 2004
11 H. Song, W. Hodgkiss, W. Kuperman, M. Stevenson, and T. Akal, 'Improvement of time reversal communications using adaptive channel equalizers,' IEEE Journal of Oceanic Eng., Vol.31, pp.487-496. Apr. 2006   DOI   ScienceOn