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Orthogonal Frequency Division Multiple Access (OFDMA) is a proven multiple access technology and used in various wireless systems including 4 th generation wireless systems. In this paper, a novel and efficient packet delivery scheme using Orthogonal Frequency Division Multiple Access (OFDMA) for railroad communications in next generation Wireless Local Area Network (WLAN) is proposed. In next generation WLAN, it is crucial to provide enhanced throughput. The enhanced throughput can be achieveddoi:10.14257/astl.2014.66.04 fatcat:4h2m4nufbzfgrgzdc73aej2k2q