標題: A Downlink Mapping Algorithm for Two-Level Requests in IEEE 802.16e Systems under AMC Mode
作者: Yang, Zi-Yang
Kuo, Yaw-Wen
Lee, Tsern-Huei
傳播研究所
Institute of Communication Studies
關鍵字: OFDMA;IEEE 802.16e;Burst mapping;AMC
公開日期: 2013
摘要: This paper proposes a downlink mapping algorithm for two-level requests in Orthogonal Frequency Division Multiple Access based IEEE 802.16e systems under the Adaptive Modulation and Coding (AMC) mode by which the modulation and coding scheme (MCS) of a user may be different for available subchannels. Given a set of requests each with two priorities, the proposed algorithm efficiently allocates a two-dimensional (time and frequency) burst with a suitable MCS to each user to maximize the system throughput with service differentiation. Simulation results show that the proposed algorithm outperforms the Efficient Downlink Mapping Allocation (EDMA) algorithm [5] in terms of the throughput of high priority data, but slightly sacrifice in overall throughput. The proposed algorithm can improve up to 98.8% more the average allocated ratio of urgent data than the EDMA.
URI: http://hdl.handle.net/11536/24371
ISBN: 978-1-4799-2825-5; 978-1-4799-2827-9
ISSN: 2159-3442
期刊: 2013 IEEE INTERNATIONAL CONFERENCE OF IEEE REGION 10 (TENCON)
顯示於類別:會議論文