A User-Division Cross-Layer Resource Allocation Scheme for OFDMA System

被引：0
|
作者：
Yuan, Xiuhong [1 ]
Hong, Guan [1 ]
机构：
[1] Coll Railway Transportat, Nanjing Inst Railway Technol, Nanjing, Peoples R China
来源：
PROCEEDINGS OF 2010 INTERNATIONAL SYMPOSIUM ON IMAGE ANALYSIS AND SIGNAL PROCESSING | 2010年
关键词：
QoS; Orthogonal frequency-division multiple access (OFDMA); Cross-; layer; Resource allocation; TRANSMISSION;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new user-division cross layer resource allocation scheme is proposed for the downlink of OFDMA system that considers the QoS requirements. The user-division model based on finite-length user queue is built up while the user rate constraints are formulated. Users are dynamic and divided into "super users" and "common users" by time delay. After all the users' QoS is guaranteed, subcarriers and power is preferentially allocated to the "super users" while maximizing the system throughput. Simulation results show that the scheme can reduce the packet drop rate and maintain high system throughput when the packet arrival rate is high.
引用
收藏
页码：307 / 311
页数：5
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