Frame length optimization for multi-antenna downlink systems based on delay-bound violation probability constraints

作     者：谭雨凤 李俊超 夏玮玮 沈连丰 Tan Yufeng;Li Junchao;Xia Weiwei;Shen Lianfeng

作者机构：东南大学移动通信国家重点实验室南京210096 

出 版 物：《Journal of Southeast University(English Edition)》 (东南大学学报（英文版）)

年 卷 期：2015年第31卷第2期

页      面：163-169页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 

基　　金：The National Science and Technology M ajor Project(No.2012ZX03004005-003) the National Natural Science Foundation of China(No.61171081,61201175) the Research Fund of National M obile Communications Research Laboratory of Southeast University(No.2014A03) 

主　　题：delay-bound violation probability frame lengthoptimization effective bandwidth effective capacity multi-antenna systems quality of service 

摘      要：A flame length optimization scheme is proposed for multi-antenna downlink systems to guarantee diverse delay- bound violation probability constraints. Due to the difficulties of extracting the quality of service （QoS） metrics from the conventional physical-layer channel models, the link-layer models named effective bandwidth and effective capacity are applied to statistically characterize the source traffic patterns and the queuing service dynamics. With these link-layer models, the source traffic process and the channel service process are mapped to certain QoS parameters. The packet delay-bound violation probability constraints are converted into minimum data rate constraints and the optimization problem is thus formulated into simultaneous inequalities. With the assumption of ergodic block-fading channels, the optimal frame lengths of single-user and multiuser systems are calculated respectively by numerical iterative methods. Theoretical analyses and simulation results show that the given delay-bound violation probability constraints are well satisfied with the optimal frame length.