Journal of information and communication convergence engineering

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Hybrid Multiple Access for Uplink OFDMA System

  • Jung, Bang-Chul (Department of Information and Communication Engineering and Institute of Marine Industry, Gyeongsang National University) ;
  • Kang, Min-Suk (Electrical and Computer Engineering, Carnegie Mellon University) ;
  • Ban, Tae-Won (Mobile Laboratory, KT)
  • Received : 2011.07.28
  • Accepted : 2011.09.02
  • Published : 2012.06.30
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Abstract

We propose a hybrid multiple access (HMA) for uplink orthogonal frequency division multiple access (OFDMA) systems, which combines two resource sharing schemes: a scheduling-based resource allocation (SBRA) scheme and a contentionbased resource allocation (CBRA) scheme. The SBRA scheme is appropriate for non-real time high data rate traffic, and, CBRA is appropriate for near-real time low/medium data rate traffic. Thus, the proposed HMA scheme supports various types of traffic. As a CBRA scheme, our proposed random frequency hopping (RFH)-OFDMA scheme was presented. Simulation results show that the proposed HMA yields the best performance among various resource allocation schemes for uplink OFDMA systems.

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