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Distributed Data Scheduling Based on Heuristic Mechanism in Wireless OFDMA Networks


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Distributed Data Scheduling Based on Heuristic Mechanism in Wireless OFDMA Networks
SUN Li-xin1GUO Kun-qi2YU Xiao-yang1JIA Shi-lou3WANG Mu-kun1
1.School of Measurement and Control Technology and Communication Engineering,Harbin University ofScience and Technology,Harbin 150080,China;2.Shanghai Research Center for Wireless Communications,Shanghai 200050,China;3.Communication Research Center,Harbin
OFDMA data scheduling fairness joint layer
By formulating the optimization of data scheduling in wireless OFDMA Ad-hoc networks as the constrained optimization of joint layer resource allocation,a distributed scheduling algorithm(DSA) with heuristic mechanism is proposed based on the optimization model.The proposed algorithm selects a sub-carrier for each link according to the condition information of local sub-carrier condition while protecting the effectiveness of selecting sub-carrier by the method using stochastic probability.Simulation results show: compared with other conventional methods,the proposed algorithm achieves the better effectiveness and the global fairness is improved by varying the probability threshold of DSA for sub-carrier selection.


[1] Chow P S, C io ffi J M, B ingham J A C. M ultitone transceiver loading algorithm for data transm ission over spectrally shaped channe ls [ J]. IEEE Trans Comm, 2002, 43( 2): 309- 317.
[2] YuW, G in is G, C ioffi J. An adaptive mu ltiuser pow er contro l a lgor ithm fo r VDSL [ A ]. G lobecom + 01 [ C ]. New Yo rk: IEEE, 2001. 394- 398.
[3] E lbatt T, Ephrem ides A. Jo int schedu ling and pow er contro l for w ire less ad hoc networks [ A ]. INFOCOM + 02 [ C ]. London: IEEE, 2002. 120- 129.
[4] W ong C Y, Cheng R S, Letaief K. B. M ultiuserOFDM w ith adaptive subcarr ier, bit, and power allocation [ J]. IEEE J Se lected A reas in Comm, 2003, 17( 10): 1 747- 1 757.
[5] Lee J, Sona lkar R, C ioffi J. A mu ltiuse r ra te and pow er con tro l a lgor ithm for VDSL [ A ]. Proc IEEE, G lobecom+ 02 [ C ]. H ongkong: IEEE, 2002. 1 264 - 1 268.
[6] H an R, Koon J. A centra lized schedu ling a lgo rithm in m ultihop OFDMA w ire less [ J ]. W ireless Persona l Comm un ication of Springer, 2002, 2 ( 2): 220- 229.
[7] 谢晓川, 王钢, 贾世楼. 基于优先级轮换的Ad ho c 网络MAC层协议[ J] . 南京理工大学学报, 2006, 30 ( 2) : 137- 141.
[8] 周熙, 贾世楼, 佘阳. 改进型卫星CFDAMA MAC协 议时延性能分析[ J]. 南京理工大学学报, 2005, 29 ( 1) : 77- 80.
[9] Kruse R L, Ryba A J. Data struc tures and a lgor ithm design in C + + [ J]. Eng land C lidds, NJ: Prentice H a l,l 1999. 90- 93.
[10] Ku lkarn iG, Sr ivastava M. Subcarr ier and bit a llo ca tion strateg ies for OFDMA based w ire less ad hoc net w orks [ A ]. Pro c IEEE , G lobecom+ 02, 2002 [ C ]. H ongkong: IEEE, 2002. 92- 96


Last Update: 2012-12-05