NDLI: Capacity Optimization of a 802.16e OFDMA/TDD Cellular System using the Joint Allocation of Sub-channel and Transmit Power

Content Provider	IEEE Xplore Digital Library
Author	SangJun Ko KyungHi Chang
Copyright Year	2007
Description	Author affiliation: Graduate Sch. of Inf. Technol. & Telecommun., Inha Univ., Incheon (SangJun Ko; KyungHi Chang)
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 that firstly 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. We compare the FASA algorithm with the conventional algorithms in the 2-tier cell environment and then analyze the performance of each algorithm through computer simulation in the downlink of 802.16e OFDMA/TDD system. 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.
Starting Page	1726
Ending Page	1731
File Size	6147790
Page Count	6
File Format	PDF
ISBN	9788955191318
ISSN	17389445
DOI	10.1109/ICACT.2007.358703
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-02-12
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	ETRI, NIA
Subject Keyword	Throughput Resource management Scheduling algorithm Heuristic algorithms Channel state information Information technology Channel allocation Downlink Optimization methods Performance analysis Transmit Power 802.16e OFDMA/TDD Sub-channel
Content Type	Text
Resource Type	Article

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