邮电设计技术
郵電設計技術
유전설계기술
Designing Techniques of Posts and Telecommunications
2015年
10期
20-24
,共5页
贾玉玮%程新洲%晁昆%徐乐西
賈玉瑋%程新洲%晁昆%徐樂西
가옥위%정신주%조곤%서악서
LTE-Advanced系统%终端直传%双向中继%网络编码%干扰协调
LTE-Advanced繫統%終耑直傳%雙嚮中繼%網絡編碼%榦擾協調
LTE-Advanced계통%종단직전%쌍향중계%망락편마%간우협조
LTE-advanced system%D2D%Two-way relay%Network coded%Interference coordination
LTE-Advanced系统要求更高的数据吞吐率，由于蜂窝通信系统以基站为中心的小区覆盖和业务提供方式本身的局限性，LTE-Advanced系统仍存在覆盖和容量等方面的问题。基于双向中继的终端直通（D2D）技术在节省资源和减小干扰等多方面有巨大优势。给出了D2D方案的应用场景，并通过仿真验证了该方案能够有效地消除中继辅助的D2D通信场景用户间干扰，改善系统吞吐率，降低资源开销，提高系统频谱效率。
LTE-Advanced繫統要求更高的數據吞吐率，由于蜂窩通信繫統以基站為中心的小區覆蓋和業務提供方式本身的跼限性，LTE-Advanced繫統仍存在覆蓋和容量等方麵的問題。基于雙嚮中繼的終耑直通（D2D）技術在節省資源和減小榦擾等多方麵有巨大優勢。給齣瞭D2D方案的應用場景，併通過倣真驗證瞭該方案能夠有效地消除中繼輔助的D2D通信場景用戶間榦擾，改善繫統吞吐率，降低資源開銷，提高繫統頻譜效率。
LTE-Advanced계통요구경고적수거탄토솔，유우봉와통신계통이기참위중심적소구복개화업무제공방식본신적국한성，LTE-Advanced계통잉존재복개화용량등방면적문제。기우쌍향중계적종단직통（D2D）기술재절성자원화감소간우등다방면유거대우세。급출료D2D방안적응용장경，병통과방진험증료해방안능구유효지소제중계보조적D2D통신장경용호간간우，개선계통탄토솔，강저자원개소，제고계통빈보효솔。
LTE-advanced system requires higher data throughput. However,system coverage with the base station in the cel center and the way users are serviced in traditional cel ular networks bring about inherent limitations of cel coverage and throughput for LTE-Advanced system. D2D technology based on two-way relay has great advantages in many aspects such as saving re-sources and reducing interference. The application scenarios of this schemes is given,and simulation results verify that this schemes can effectively eliminate interference between users in the relay aided D2D scenario,improve system throughput, reduce resource overhead and improve system spectrum efficiency.
