Energy-efficient relay selection and optimal relay location in cooperative cellular networks with asymmetric traffic

doi:10.1016/S1005-8885(09)60529-X

中国邮电高校学报(英文) ›› 2010, Vol. 17 ›› Issue (6): 80-88.doi: 10.1016/S1005-8885(09)60529-X

Energy-efficient relay selection and optimal relay location in cooperative cellular networks with asymmetric traffic

杨桅

Key Laboratory of Universal Wireless Communication., Beijing University of Posts and Telecommunications, Ministry of Education, Beijing 100876, China

收稿日期:2010-04-30 修回日期:2010-07-15 出版日期:2010-12-30 发布日期:2010-12-06
通讯作者: 杨桅 E-mail:twiniiyw@gmail.com

Energy-efficient relay selection and optimal relay location in cooperative cellular networks with asymmetric traffic

Wei YANG

Key Laboratory of Universal Wireless Communication., Beijing University of Posts and Telecommunications, Ministry of Education, Beijing 100876, China

Received:2010-04-30 Revised:2010-07-15 Online:2010-12-30 Published:2010-12-06
Contact: Wei YANG E-mail:twiniiyw@gmail.com

摘要/Abstract

摘要：

Energy-efficient communication is an important requirement for mobile relay networks due to the limited battery power of user terminals. This paper considers energy-efficient relaying schemes through selection of mobile relays in cooperative cellular systems with asymmetric traffic. The total energy consumption per information bit of the battery-powered terminals, i.e., the mobile station (MS) and the relay, is derived in theory. In the joint uplink and downlink relay selection (JUDRS) scheme we proposed, the relay which minimizes the total energy consumption is selected. Additionally, the energy-efficient cooperation regions are investigated, and the optimal relay location is found for cooperative cellular systems with asymmetric traffic. The results reveal that the MS-relay and the relay-base station (BS) channels have different influence over relay selection decisions for optimal energy-efficiency. Information theoretic analysis of the diversity-multiplexing tradeoff (DMT) demonstrates that the proposed scheme achieves full spatial diversity in the quantity of cooperating terminals in this network. Finally, numerical results further confirm a significant energy efficiency gain of the proposed algorithm comparing to the previous best worse channel selection and best harmonic mean selection algorithms.

关键词:

energy-efficient, relay selection, cooperative communication, optimal relay location, asymmetric traffic

Abstract:

Key words:

energy-efficient, relay selection, cooperative communication, optimal relay location, asymmetric traffic

Wei YANG. Energy-efficient relay selection and optimal relay location in cooperative cellular networks with asymmetric traffic[J]. Acta Metallurgica Sinica(English letters), 2010, 17(6): 80-88.

参考文献

1. Sendonaris A, Erkip E, Aazhang B. User cooperation diversity, Part I: system description. IEEE Transactions on Communications, 2003, 51(11): 1927-1938

2. Laneman J N, Tse D N C, Wornell G W. Cooperative diversity in wireless networks: efficient protocols and outage behavior. IEEE Transactions on Information Theory, 2004, 50(12): 3062-3080

3. Tannious R, Nosratinia A. Spectrally-efficient relay selection with limited feedback. IEEE Journal on Selected Areas in Communications, 2008, 26(8): 1419-1428

4. Lin Z, Erkip E, Stefanov A. Cooperative regions and partner choice in coded cooperative systems. IEEE Transactions on Communications, 2006, 54(7): 1323-1334

5. Nosratinia A, Hunter T E. Grouping and partner selection in cooperative wireless networks. IEEE Journal on Selected Areas in Communications, 2006, 54(4): 369-378

6. Madan R, Mehta N B, Molisch A F, et al. Energy-efficient cooperative relaying over fading channels with simple relay selection. IEEE Transactions on Wireless Communications, 2008, 7(8): 3013-3025

7. Bletsas A, Khisti A, Reed D R, et al. A simple cooperative diversity method based on network path selection. IEEE Journal on Selected Areas in Communications, 2006, 24(3): 659-672

8. Cui S, Goldsmith A J, Bahai A. Energy-constrained modulation optimization. IEEE Transactions on Wireless Communications, 2005, 4(5): 2349-2360

9. Cui S, Goldsmith A J, Bahai A. Energy-efficiency of MIMO and cooperative MIMO techniques in sensor networks. IEEE Journal on Selected Areas in Communications, 2004, 22(6): 1089-1098

10. Goldsmith A J, Chua S G. Variable-rate variable-power MQAM for fading channels. IEEE Transactions on Communications, 1997, 45(10): 1218-1230

11. Proakis J G. Digital communications. Fourth Edition. New York, NY, USA: McGraw-Hill Science Engineering, 2000: 511-526

12. Vandendorpe L, Louveaux J, Oguz O, et al. Power allocation for OFDM transmission with DF relaying. Proceedings of IEEE International Conference on Communications (ICC’08), May 19-23, 2008, Beijing, China. Piscataway, NJ, USA: IEEE, 2008: 3795-3800

13. Miao G, Himayat N, Li Y, et al. Energy-efficient design in wireless OFDMA. Proceedings of IEEE International Conference on Communications (ICC’08), May 19-23, 2008, Beijing, China. Piscataway, NJ, USA: IEEE, 2008: 3307-3312

14. Evolved universal terrestrial radio access (E-UTRA), radio frequency (RF) system scenarios, Release 8. 3GPP TR 36.942 V8.2.0 2009

15. Cho W, Oh W S, Kwak D Y. Effect of relay locations in cooperative networks. Proceedings of the 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace & Electronic Systems Technology (Wireless VITAE’09), May 17-20, 2009, Aalborg, Denmark. Piscataway, NJ, USA: IEEE, 2009: 737-741

16. Zheng L, Tse D N C. Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels. IEEE Transactions on Information Theory, 2003, 49(5): 1073-1096

17. Jing Y, Jafarkhani H. Single and multiple relay selection schemes and their achievable diversity orders. IEEE Transactions on Wireless Communications, 2009, 8(3): 1414-1423

18. Liu Y, Kuang Y J, Long K. A distributed space-time block coding scheme based on multi-relay selection. Journal of Chongqing University of Posts and Telecommunications, 2009, 21(1): 39-44

Energy-efficient relay selection and optimal relay location in cooperative cellular networks with asymmetric traffic

Energy-efficient relay selection and optimal relay location in cooperative cellular networks with asymmetric traffic

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