文章基本信息

标题：Adaptive Slot Management for Ofdma Based Cellular Wireless Networks in Tdd Mode
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作者：Dhananjay Kumar, C. Chellappan
期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2009
卷号：5
期号：06
出版社：Journal of Theoretical and Applied
摘要：The next generation of networks is expected to support real-time multimedia applications with different classes of traffic and diverse bandwidth requirements. The Orthogonal Frequency Division Multiple Access (OFDMA) system with time division duplex mode, employing asymmetric slot allocation between uplink and downlink, is a good solution for mixed realistic traffic. In this paper, we investigate and discuss the effect of slot and subcarrier management strategy in an OFDMA system, in which each cell can adaptively control the resource allocation as per its prevailing traffic load. Considering traffic direction in home and neighbor cell, a total of four cases for interference pattern has been analyzed here. The simulation result shows that a 9dB of Signal to Noise Ratio (SNR) is enough in all four cases to bring the Bit Error Rate (BER) in acceptable limit. We also analyze the effect of change in distance ratio on BER.
关键词：OFDMA; SNR; BER; Downlink; Uplink; TDD