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Aggressive Sub-channel Allocation Algorithm for Intelligent Transmission in Multi-user OFDMA System

  • SangJun Ko
  • Joo Heo
  • Yupeng Wang
  • KyungHi Chang
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4253)

Abstract

This paper solves the problem of finding an intelligent sub-channel allocation method to communicate with multiple users in OFDMA wireless systems. We propose an ASA (Aggressive Sub-channel Allocation) algorithm, which is an intelligent dynamic channel allocation algorithm considering all users’ channel state information conditionally to maximize throughput in an OFDMA system. We compare the ASA algorithm with Round-robin, PF (Proportional Fair) and ACG (Amplitude Craving Greedy) in the 2-tier cell environment and then analyze the performance of each algorithm through computer simulation in downlink OFDMA system. Simulation results show that the proposed ASA algorithm gets 24 %, 16 % and 14 % better ring throughput compared with the Round-robin, PF and ACG, respectively.

Keywords

Power Allocation Channel State Information System Throughput OFDMA System Path Loss Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • SangJun Ko
    • 1
  • Joo Heo
    • 1
  • Yupeng Wang
    • 1
  • KyungHi Chang
    • 1
  1. 1.The Graduate School of Information Technology & TelecommunicationsInha UniversityIncheonKorea

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