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http://dx.doi.org/10.7840/kics.2015.40.4.762

Improvement of Computational Complexity of Device-to-Device (D2D) Resource Allocation Algorithm in LTE-Advanced Networks  

Lee, Han Na (Gangneung-Wonju National University)
Kim, Hyang-Mi (Gangneung-Wonju National University)
Kim, SangKyung (Gangneung-Wonju National University)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.40, no.4, 2015 , pp. 762-768 More about this Journal
Abstract
D2D communication as an underlaying LTE-Advanced network has proven to be efficient in improving the network performance and decreasing the traffic load of eNodeB(enhanced NodeB). However large amount of interference can be caused by sharing the resources between the cellular users and D2D pairs. So, a resource allocation for D2D communication to coordinate the interference is necessary. Related works for resource allocation that D2D can reuse the resources of more than one cellular user with best CQI(Channel Quality Indicator) have been proposed. D2D communications may still cause interference to the primary cellular network when radio resource are shared between them. To avoid this problem, we propose a radio resource allocation algorithm with low computational complexity for D2D communication in OFDM-based wireless cellular networks. Unlike the previous works, the proposed algorithm utilizes unused ones of the whole resource. The unused resource allocate to on D2D pair can be shared only with other D2D pairs. In other words, if the distance between the D2D pairs is sufficient, we allowed more than two D2D pairs to share the same resources. The simulation results have proven that the proposed algorithm has up to 11 times lower computational complexity than the compared one according to the number of D2D.
Keywords
D2D communication; Resource Allocation; OFDMA; Computational; Complexity; LTE-Advanced;
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Times Cited By KSCI : 5  (Citation Analysis)
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