Title :
Power Efficient Frequency Domain Packet Scheduling for OFDMA Systems
Author :
Lee, Kyoung Seok ; Ryu, Byung-Han ; Lee, Cheol-Hoon
Author_Institution :
Electron. & Telecommun. Res. Inst., Daejon
Abstract :
As the enormous development of IT technology, the convergence technology enlarges its research areas. Recently, OFDMA which was widely used in satellite and wireline communications is applied to broadband wireless communication systems. In order to employ the OFDMA to next generation mobile systems, throughput maximization and power efficient control mechanism is needed. This paper proposes the multilevel scheme for the power efficient feedback of channel state information without degrading system performance. Also, we propose a sub-optimal resource allocation scheme based on a greedy algorithm which guarantees fairness with reduced complexity. Proposed scheme is evaluated by system level simulation which uses a spatial channel model and the results show that the proposed scheme follows proportional fair throughput and reduces signaling overheads for feedback.
Keywords :
OFDM modulation; broadband networks; frequency division multiple access; greedy algorithms; mobile radio; packet switching; OFDMA systems; broadband wireless communication systems; channel state information; convergence technology; greedy algorithm; next generation mobile systems; power efficient control; power efficient frequency domain packet scheduling; sub-optimal resource allocation; Artificial satellites; Broadband communication; Communication system control; Control systems; Frequency domain analysis; Mobile communication; Scheduling algorithm; State feedback; Throughput; Wireless communication;
Conference_Titel :
Convergence Information Technology, 2007. International Conference on
Conference_Location :
Gyeongju
Print_ISBN :
0-7695-3038-9
DOI :
10.1109/ICCIT.2007.392