Capacity Optimization of a 802.16e OFDMA/TDD Cellular System using the Joint Allocation Algorithm of Sub-channel and Transmit Power - Part I : Sub-channel Allocation Algorithm for Throughput Maximization in the Downlink insuring Fairness and Power Allocation Algorithm for efficient use of Extra Transmit Power efficiently 


Vol. 32,  No. 3, pp. 247-260, Mar.  2007


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  Abstract

This paper solves the problem of finding a suitable sub-channel and power joint allocation method for multiple users in 802.16e OFDMA/TDD cellular systems. The joint allocation is thatfirstly the sub-channel is allocated to the users and then suitable power is allocated. We propose a FASA (Fairness insured Aggressive Sub-channel Allocation) algorithm which is a dynamic channel allocation algorithm considering all users' channel state information conditionally to maximize fairness and throughput. The improved CHC algorithm, which is dynamic power allocation algorithm, is also proposed in this paper. The Improved CHC algorithm collects the extra of the downlink transmit power and then re-allocates it to other users. Simulation results show that the proposed improved CHC algorithm additionally increases the fairness and sector throughput.

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  Cite this article

[IEEE Style]

S. Ko, K. Chang, J. Kim, "Capacity Optimization of a 802.16e OFDMA/TDD Cellular System using the Joint Allocation Algorithm of Sub-channel and Transmit Power - Part I : Sub-channel Allocation Algorithm for Throughput Maximization in the Downlink insuring Fairness and Power Allocation Algorithm for efficient use of Extra Transmit Power efficiently," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 3, pp. 247-260, 2007. DOI: .

[ACM Style]

SangJun Ko, KyungHi Chang, and JaeHyeong Kim. 2007. Capacity Optimization of a 802.16e OFDMA/TDD Cellular System using the Joint Allocation Algorithm of Sub-channel and Transmit Power - Part I : Sub-channel Allocation Algorithm for Throughput Maximization in the Downlink insuring Fairness and Power Allocation Algorithm for efficient use of Extra Transmit Power efficiently. The Journal of Korean Institute of Communications and Information Sciences, 32, 3, (2007), 247-260. DOI: .

[KICS Style]

SangJun Ko, KyungHi Chang, JaeHyeong Kim, "Capacity Optimization of a 802.16e OFDMA/TDD Cellular System using the Joint Allocation Algorithm of Sub-channel and Transmit Power - Part I : Sub-channel Allocation Algorithm for Throughput Maximization in the Downlink insuring Fairness and Power Allocation Algorithm for efficient use of Extra Transmit Power efficiently," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 3, pp. 247-260, 3. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880