June Hwang
ABSTRACT
We consider spectral and energy efficiency achieved by a novel relay communication in a cellular system, in which the so-called relay-beneficial mobile nodes communicate with base stations through appropriate relay nodes. The relay node uses the network coding to mix up- and downlink traffic; moreover, the mobile nodes and base stations adopt Maximal Ratio Combining (MRC) scheme to take advantage of cooperative transmission. For this system, we derive an information-theoretical condition, under which the cooperative transmission (combined with network coding) is more beneficial than the direct transmission. Using that condition, we suggest a two-phase algorithm to select the relay nodes (Phase 1) and to determine the transmission powers of those relay nodes (Phase 2). The numerical examples using this algorithm show improved energy efficiency compared to a plain system.
- J. N. Laneman, D. N. C. Tse and G. W. Wornell. Cooperative diversity in wireless networks: efficient protocols and outage behavior. IEEE Trans. Inform. Theory, 50(12):3062--3080, December 2004. Google Scholar
Digital Library
- J. Hwang and S.-L. Kim. A cross-layer optimization of IEEE 802.11 MAC for wireless multihop networks. IEEE Commun. Letters, 10(7):531--533, July 2006.Google ScholarCross Ref
- R. Ahlswede, N. Cai, S.-Y. R. Li, and R. W. Yeung. Network information flow. IEEE Trans. Inform. Theory, 46(4):1204--1216, July 2000. Google ScholarDigital Library
- R. D. Yates and C.-Y. Huang. Integrated power control and base station assignment. IEEE Trans. Veh. Technol., 44(3):638--644, August 1995.Google ScholarCross Ref
- J. Zander and S.-L Kim. Radio Resource Management for Wireless Networks. Norwood MA: Artech House, 2001. Google ScholarDigital Library
- J. K. Sundararajan and H. Viswanathan. Comparison of schemes for streaming multicast in cellular networks with relays. In IEEE WCNC Proceedings, 2006.Google ScholarCross Ref
- Y. Chen, S. Kishore and J. T. Li. Wireless diversity throughput network coding. In IEEE WCNC Proceedings, 2006.Google Scholar
Index Terms
- A two-phase algorithm for network coding enabled cellular systems
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