电讯技术2016，Vol.56Issue(10)：1159-1164,6.DOI:10.3969/j.issn.1001-893x.2016.10.017
多跳CC-HARQ中继网络的频谱有效性跨层设计
Cross-layer Design of Spectral Efficiency for Multihop CC-HARQ Relay Networks
摘要
Abstract
Over Rayleigh fading channels,the cross-layer optimum schemes to improve spectral efficiency ( SE ) for a multihop relay network with Chase-combining based hybrid automatic repeat request ( CC-HARQ) are investigated,where the cross-layer optimization of frame length and transmission power is con-sidered. Differing from the conventional analysis of outage probability, via utilizing a log-domain linear threshold method of average frame error rate estimation, an exact expression of SE for a multihop CC-HARQ protocol is presented,by fixing the transmission power or frame length to relatively design the opti-mal frame length scheme and optimal transmission power allocation method,then a cross-layer joint optimi-zation scheme is proposed. Simulation results validate the correctness and effectiveness of the analytical so-lutions,meanwhile,simulation shows that the performance of SE in multihop CC-HARQ relay networks is largely improved by adopting the proposed cross-layer optimization design,the cross-layer joint optimiza-tion scheme is able to achieve extra 0. 014 b/s·Hz-1 improvement of SE compared with the conventional scheme with fixed frame length and equal transmission power.关键词
多跳中继网络/频谱效率/跨层设计/Chase合并混合自动重传请求( CC-HARQ)Key words
multihop relay network/spectral efficiency/cross-layer design/Chase-combining based hybrid automatic repeat request( CC-HARQ)分类
信息技术与安全科学引用本文复制引用
肖博,习勇,韩君妹..多跳CC-HARQ中继网络的频谱有效性跨层设计[J].电讯技术,2016,56(10):1159-1164,6.基金项目
国家自然科学基金资助项目(61471376)Foundation Item:The National Natural Science Foundation of China(No.61471376) （61471376）
