Adaptive resource allocation with rate proportionality tracking in OFDMA systems

Seungyoup Han, Sungtae Kim, Eunsung Oh, Daesik Hong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

A new adaptive resource allocation scheme is proposed in orthogonal frequency-division multiple access (OFDMA) systems with rate proportionality constraints. The problem of maximizing the overall system capacity with constraints on bit-error rate, total transmission power and rate-proportionality for user requiring different classes of service is formulated. Since the optimal solution to the constrained fairness problem is extremely complex to obtain, a low-complexity suboptimal algorithm that separates subchannel allocation and power allocation is proposed. Firstly, the number of subchannels to be assigned to each user is determined based on the users' average signal-to-noise ratio and rate-proportion. Subchannels are subsequently distributed according to the modified max-min criterion. Lastly, iterative rateproportionality tracking algorithm is proposed for maximizing the capacity together with maintaining the rate proportionality constraint. Simulation results demonstrate that the proposed method can distribute the capacity more efficiently and fairly among users than other existing method.

Original languageEnglish
Title of host publication2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
Pages3031-3035
Number of pages5
DOIs
Publication statusPublished - 2007
Event2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring - Dublin, Ireland
Duration: 2007 Apr 222007 Apr 25

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

Other2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
CountryIreland
CityDublin
Period07/4/2207/4/25

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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  • Cite this

    Han, S., Kim, S., Oh, E., & Hong, D. (2007). Adaptive resource allocation with rate proportionality tracking in OFDMA systems. In 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring (pp. 3031-3035). [4213049] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2007.621