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Strategic Study of CAE >> 2007, Volume 9, Issue 6

A Study on Resource Fairness Scheduling Algorithms forthe OFDMA Systems

1. Institute of Communications Engineering, PLA Univ. of Sci. & Tech., Nanjing  210007, China ;

2. Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai  200030, China

Funding project:国家自然科学基金资助项目(60372080);“八六三”高技术研究发展计划资助项目(2003AA123310);江苏省自然科学基 Received: 2006-01-22 Revised: 2006-07-03

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Abstract

The paper studied the radio resource fairness scheduling for Orthogonal Frequency Division Multiplexing Multiple Access (OFDMA) systems which was supporting several different services. After deeply analyzing a classical resource scheduling algorithm,  which maximize the worst user's capacity,  an improved algorithm which can evidently enhance the fairness performance was proposed.  Simulation results show that the improved algorithm can keep a better fairness performance under different application environment,  and can more strictly guarantee the required data rate for different service.

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References

[ 1 ] Rhee W , Cioffi J M . Increase in capacity of multiuser OFDM system using dynamic subchannel allocation [A] . Tokyo : Proc IEEE Vehicular Technology Conf [ C] . VTC´00 - Spring ,2000 .1085 ~ 1089 link1

[ 2 ] Wong I C ,Shen Z K ,Evans B L ,et al .A low complexity algorithm for proportional resource allocation in OFDMA systems [J] .Proceeding IEEE Signal Processing Systems , 2004 ,(10) :1 ~ 6 link1

[ 3 ] Shen Z , Andrews J G , Evans B L . Optimal power allocation in multiuser OFDM systems [A] . Proc IEEE Global Communications Conference [C] . San Francisco CA ,2003 .337 ~ 341 link1

[ 4 ] Jiho J , Lee K B , Lee Y H . Transmit power and bit allocations for OFDM systems in a fading channel [J] . IEEE Globecom ,2003 ,(2) :858 ~ 862 link1

[ 5 ] 杨大成 ,等编著 .移动传播环境[M] .北京 :机械工 业出版社 ,2003

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