Abstract

Hybrid radio frequency/free space optical (RF/FSO) wireless mesh networks have attracted increasing attention for they can overcome the limitations of RF and FSO communications and significantly increase the throughput of wireless mesh networks (WMNs). In this article, a resource assignment optimization scheme is proposed for hybrid RF/FSO wireless mesh networks. The optimization framework is proposed for the objective of maximizing throughput of overall hybrid networks through joint transmission slot assignment, FSO links allocation and power control with the consideration of the fading nature of RF and FSO links. The scheme is formulated as an instance of mixed integer linear program (MILP) and the optimal solutions are provided using CPLEX and Gurobi optimizers. How to choose the appropriate optimizer is discussed by comparing their performance. Numerous simulations are done to demonstrate that the performance of our optimization scheme is much better than the current case of having the same topology.

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Other (25)

J. Luo, C. Rosenberg, and A. GirardEngineering wireless mesh networks: joint scheduling, routing, power control, and rate adaptationIEEE/ACM Trans. Netw.20101813871400

Y. Tang, M. B. Pearce, and S. G. WilsonLink adaptation for throughput optimization of parallel channels with application to hybrid FSO/RF systemsIEEE Trans. Commun.20126027232732

F. Yang, J. L. Cheng, and T. A. TsiftsisFree-space optical communication with nonzero boresight pointing errorsIEEE Trans. Commun.201462713725

Y. Tang and M. B. PearceLink allocation, routing and scheduling for hybrid FSO/RF wireless mesh networksJ. Opt. Commun. Netw.201468695

M. N. Smadi, S. C. Ghosh, A. A. Farid, T. D. Todd, and S. HranilovicFree-space optical gateway placement in hybrid wireless mesh networksJ. Lightwave Technol.20092726882697

O. Awwad, A. A. Fuqaha, B. Khan, and G. B. BrahimTopology control schema for better QoS in hybrid RF/FSO mesh networksIEEE Trans. Commun.20126013981406

F. Ahdi and S. SubramaniamOptimal placement of FSO links in hybrid wireless optical networksIEEE Global Telecommun. Conf. (GLOBECOM)201126316

V. Rajakumar, M. N. Smadi, S. C. Ghosh, T. D. Todd, and S. HranilovicInterference management in WLAN mesh networks using free-space optical linksJ. Lightwave Technol.20082617351743

D. Wang and A. A. AbouzeidThroughput capacity of hybrid radio-frequency and Free-Space-Optical (RF/FSO) multi-hop networksInformation Theory and Applications Workshop2007310

A. Kashyap and M. ShaymanRouting and traffic engineering in hybrid RF/FSO networksIEEE Int. Conf. on Commun. (ICC)2005534273433

A. Kashyap, A. Rawat, and M. ShaymanIntegrated backup topology control and routing of obscured traffic in hybrid RF/FSO networksProc. IEEE Global Telecommun. Conf. (GLOBECOM)200616

S. Enayati, H. Saeediand, and N. MokariThroughput maximization in hybrid FSO/RF communication systemsInt. Workshop on Opt. Wireless Commun. (IWOW)20155154

D. MaticA mixed integer linear programming model and variable neighborhood search for maximally balanced connected partition problemAppl. Math. Comput.20142378597

A. Sifaleras, L. Konstantaras, and N. MladenovicVariable neighborhood search for the economic lot sizing problem with product returns and recoveryInt. J. prod. Econ.2015160133143

C. Liu, Y. Yao, Y. X. Sun, and X. H. ZhaoAnalysis of average capacity for free-space optical links with pointing errors over gamma-gamma turbulence channelsChinese Opt. Lett.20108537540

H. E. Nistazakis, E. A. Karagianni, A. D. Tsigopoulos, M. E. Fafalios, and G. S. TombrasAverage capacity of optical wireless communication systems over atmospheric turbulence channelsJ. Lightwave Technol.200927974979

Y. Wang, F. Du, J. Ma, and L. Y. TanEmploying circle polarization shift keying in free space optical communication with gamma-gamma atmospheric turbulence channelOpt. Commun.2014333167174

M. A. A. Habash, L. C. Andrews, and R. L. PhillipsMathematical model for the irradiance probability density function of a laser beam propagating through turbulent mediaOpt. Eng.20014015541562

T. Rakia, H. C. Yang, M. S. Alouini, and F. GebaliOutage analysis of practical FSO/RF hybrid system with adaptive combiningIEEE Commun. Lett.201519813661369

T. A. TsiftsisPerformance of heterodyne wireless optical communications systems over gamma-gamma atmospheric turbulence channelsElectron. Lett.200844373375

W. Gappmair, S. Hranilovic, and E. LeitgebOOK performance for terrestrial FSO links in turbulent atmosphere with pointing errors modeled by Hoyt distributionsIEEE Commun. Lett.201115875877

F. Yang and J. ChengCoherent free-space optical communications in lognormal-Rician turbulenceIEEE Commun. Lett.20121618721875

H. Dahrouj, A. Douik, F. Rayal, T. Y. Al-Naffouri, and M. S. AlouiniCost-effective hybrid RF/FSO backhaul solution for next generation wireless systemsIEEE Wireless Commun.201522598104

A. G. Sarigiannidis, M. Iloridou, P. Nicopolitidis, G. Papadimitriou, F.-N. Pavlidou, P. G. Sarigiannidis, M. D. Louta, and V. VitsasArchitectures and bandwidth allocation schemes for hybrid wireless-optical networksIEEE Commun. Surveys Tuts.2015171427468

K. Jain, J. Padhye, V. N. Padmanabhan, and L. QiuImpact of interference on multi-hop wireless network performanceWireless Netw.200511471487

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