標題: On Tile-and-Energy Allocation in OFDMA Broadband Wireless Networks
作者: Liang, Jia-Ming
Chen, Jen-Jee
Liu, Cheng-Wen
Tseng, Yu-Chee
Lin, Bao-Shuh Paul
資訊工程學系
Department of Computer Science
關鍵字: 3GPP LTE;energy conservation;IEEE 802.16;OFDMA;resource management;WiMAX
公開日期: 1-十二月-2011
摘要: The Orthogonal Frequency Division Multiple Access (OFDMA) technique has been widely applied in broadband wireless networks, such as IEEE 802.16 (WiMAX) and 3GPP Long Term Evolution (LTE). Existing studies have targeted at improving network throughput by increasing the transmission rates of mobile stations (MSs). Nevertheless, this is at the cost of higher energy consumption of MSs. In the letter, we consider the tile-and-energy joint allocation problem for uplink transmissions in an OFDMA wireless network. We formulate this problem as a mixed integer programming, where the objective is to minimize MSs' energy consumption subject to satisfying their traffic demands. We show this to be NP-hard and develop a heuristic taking advantage of the water-filling technique. Simulation results show that the performance of our heuristic is close to the optimum, especially when the network is under non-saturated condition.
URI: http://dx.doi.org/10.1109/LCOMM.2011.101211.110938
http://hdl.handle.net/11536/15049
ISSN: 1089-7798
DOI: 10.1109/LCOMM.2011.101211.110938
期刊: IEEE COMMUNICATIONS LETTERS
Volume: 15
Issue: 12
起始頁: 1284
結束頁: 1287
顯示於類別:期刊論文


文件中的檔案:

  1. 000298299600008.pdf