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Capacity Optimization of a 802.16e OPDMA/TDD Cellular System using the Joint Allocation Algorithm of Sub-charmel and Transmit Power - Part II : Sub-channel Allocation in the Uplink Using the Channel Sounding and Initial Transmit Power Decision Algorithm According to the User's Throughput  

Ko, Sang-Jun (인하대학교 정보통신대학원 이동통신연구실)
Chang, Kyung-Hi (인하대학교 정보통신대학원 이동통신연구실)
Kim, Jae-Hyeong (포스데이타 WiMAX/WiBro 시스템 개발부)
Abstract
In this paper, we propose an uplink dynamic resource allocation algorithm to increase sector throughput and fairness among users in 802.16e OFDMA TDD system. In uplink, we address the difference between uplink and downlink channel state information in 802.16e OFDMA TDD system. The simulation results show that not only an increment of 10% of sector throughput but higher level of fairness is achieved by round-robin using the FLR and the rate / margin adaptive inner closed-loop power control algorithm. The FLR algorithm determines the number of sub-channels to be allocated to the user according to the user's position. Also, we get 31.8% more sector throughput compared with the round-robin using FLR by FASA algorithm using uplink channel state information. User selection, sub-channel allocation, power allocation algorithms and simulation methodology are mentioned in Part I.
Keywords
FASA; Improved CHC; Power Control; 802.16e; OFDMA;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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