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Title: A Low-Complexity Suboptimal Algorithm for Joint Resource and Subcarrier Assignment in Downlink OFDMA System
Authors: Yadav, Satyendra Singh
Lopes, Paulo A C
Patra, Sarat Kumar
Keywords: OFDMA
Resource allocation
Subcarrier assignment
Water-filling algorithm
Hungarian algorithm
Fairness ratio
Issue Date: Oct-2017
Citation: International Conference on Recent Innovations in Signal - Processing and Embedded - Systems - RISE-2017, MANIT Bhopal, Madhya Pradesh, India, 27 - 29 October 2017
Abstract: Multiuser orthogonal frequency division multiple access (MU-OFDMA) technique has attracted much attention for broadband wireless access in future generation wireless communication systems. To achieve high data rate under constraint conditions, systems require proper resource allocation. This demands, sophisticated signal processing algorithms, which are computationally complex. This paper proposed a lowcomplexity suboptimal joint algorithm for resource allocation (task-1) and subcarrier assignment (task-2). The power allocation is carried out using the water-filling algorithm. The proposed algorithm is compared with existing Hungarian algorithm (HA) and amplitude craving greedy (ACG) algorithm for spectral efficiency, fairness among the users and computational complexity. The simulations results show that the proposed algorithm performs close to the HA. It maintains high fairness among the users and has reduced computational complexity compare to the existing algorithms.
Description: Copyright of this paper belongs to proceedings publisher
Appears in Collections:Conference Papers

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