A Dynamic Bandwidth Allocation Scheme for a Multi-spot-beam Satellite System

ETRI Journal

关键词: optimization;    spectral efficiency;    frequency bandwidth;    resource allocation;    Multibeam satellite;   

Others  :  1186348
DOI  :  10.4218/etrij.12.0211.0437

【 摘 要 】

A multi-spot-beam satellite is an attractive technique for future satellite communications since it can support high data rates by projecting high power density to each spot beam and can reuse a frequency in different cells to increase the total system capacity. In this letter, we propose a resource management technique adjusting the bandwidth of each beam to minimize the difference between the traffic demand and allocated capacity. This represents a reasonable solution for dynamic bandwidth allocation, considering a trade-off between the maximum total capacity and fairness among the spot beams with different traffic demands.

   

【 参考文献 】

• [1]J. Ha, J. Kim, and S.-H. Kim, “Performance Analysis of Dynamic Spectrum Allocation in Heterogeneous Wireless Networks,” ETRI J., vol. 32, no. 2, Apr. 2010, pp. 292-301.
• [2]M.J. Neely, E. Modiano, and C.E. Rohrs, “Power Allocation and Routing in Multibeam Satellites with Time-Varying Channels,” IEEE/ACM Trans. Netw., vol. 11, no. 1, Feb. 2003, pp. 138-152.
• [3]J.P. Choi and V.W.S. Chan, “Optimum Power and Beam Allocation Based on Traffic Demand and Channel Conditions over Satellite Downlinks,” IEEE Trans. Commun., vol. 4, no. 6, Nov. 2005, pp. 2983-2993.
• [4]T.M. Cover and J.A. Thomas, Elements of Information Theory, New York: John Wiley & Sons, Inc., 1991.
• [5]H.S. Jo, “Codebook-Based Precoding for SDMA-OFDMA with Spectrum Sharing,” ETRI J., vol. 33, no. 6, Dec. 2011, pp. 831-840.
• [6]V.J. Mathews and G.L. Sicuranza., Polynomial Signal Processing, New York: John Wiley & Sons, Inc., 2000.
• [7]ITU-R, “Calculation of Free-Space Attenuation,” Rec. P. 535-2, ITU, 1994.