西安电子科技大学学报（自然科学版）2013，Vol.40Issue(2)：72-81,10.DOI:10.3969/j.issn.1001-2400.2013.02.013
中继系统基于QoS保障的跨层优化设计
Cross-layer optimization and design based on QoS guarantees in the relay system
摘要
Abstract
In order to improve the throughput and guarantee the quality-of-service (QoS) for a relay system, a cross-layer design scheme which combines adaptive modulation and coding (AMC) at the physical layer with cooperative hybrid automatic repeat request (CHARQ) at the link layer is proposed over the Nakagami-M fading channel. Firstly, the system packet loss rate (PLR) is described and analyzed through the state transition diagram. Then, the queuing delay is derived using the queuing theory. Moreover, a cross-layer model for maximizing system throughput is presented under the constraints of PLR, queuing delay and transmission delay. Numerical results show that the cross-layer design scheme combining CHARQ with AMC can achieve the optimal throughput, the smallest PLR and the shortest queuing delay and transmission delay.关键词
混合自动请求重传/自适应调制编码/状态转移图/Markov模型/Nakagami-m信道Key words
hybrid automatic repeat request ( HARQ) / adaptive modulation and coding (AMC)/ state transition diagram/Markov model/ Nakagami-m channel分类
信息技术与安全科学引用本文复制引用
唐伦,张荣荣,陈前斌..中继系统基于QoS保障的跨层优化设计[J].西安电子科技大学学报（自然科学版）,2013,40(2):72-81,10.基金项目
国家自然科学基金资助项目(60972070) （60972070）
重庆市自然科学基金资助项目(CSTC2009BA2090) （CSTC2009BA2090）
重庆市教委基金资助项目(KJ100514) （KJ100514）
重庆邮电大学博士启动基金资助项目(A2011-2) （A2011-2）
重庆市科委重点实验室专项经费资助项目 （）
