电讯技术
電訊技術
전신기술
TELECOMMUNICATIONS ENGINEERING
2013年
12期
1605-1609
,共5页
中继网络%解码转发%放大转发%同信道干扰%中断概率
中繼網絡%解碼轉髮%放大轉髮%同信道榦擾%中斷概率
중계망락%해마전발%방대전발%동신도간우%중단개솔
relay networks%decode-and-forward%amplify-and-forward%co-channel interference%outage probability
分析了两跳中继网络在同信道干扰下的中断概率。在中继网络中，源节点广播信号至所有的中继节点，此时同信道干扰在中继节点或者目的节点处被引入。中继节点采用解码转发策略转发源节点的信号，而目的节点采用最大比合并技术接收来自中继节点的信号。最终推导了各种干扰情形下系统中断概率的闭合表达式。仿真结果表明，解析曲线和蒙特卡洛仿真曲线非常吻合，而同信道干扰在某些场合会对系统性能造成较大影响。分析结果对中继网络的系统设计和参数设置都有一定的参考意义。
分析瞭兩跳中繼網絡在同信道榦擾下的中斷概率。在中繼網絡中，源節點廣播信號至所有的中繼節點，此時同信道榦擾在中繼節點或者目的節點處被引入。中繼節點採用解碼轉髮策略轉髮源節點的信號，而目的節點採用最大比閤併技術接收來自中繼節點的信號。最終推導瞭各種榦擾情形下繫統中斷概率的閉閤錶達式。倣真結果錶明，解析麯線和矇特卡洛倣真麯線非常吻閤，而同信道榦擾在某些場閤會對繫統性能造成較大影響。分析結果對中繼網絡的繫統設計和參數設置都有一定的參攷意義。
분석료량도중계망락재동신도간우하적중단개솔。재중계망락중，원절점엄파신호지소유적중계절점，차시동신도간우재중계절점혹자목적절점처피인입。중계절점채용해마전발책략전발원절점적신호，이목적절점채용최대비합병기술접수래자중계절점적신호。최종추도료각충간우정형하계통중단개솔적폐합표체식。방진결과표명，해석곡선화몽특잡락방진곡선비상문합，이동신도간우재모사장합회대계통성능조성교대영향。분석결과대중계망락적계통설계화삼수설치도유일정적삼고의의。
Outage probability of two-hop relay networks in the presence of co-channel interference is in-vestigated. The source broadcasts signals to all the relays, and co-channel interference is introduced either at the relays or at the destination. Relays adopt decode-and-forward( DF) scheme to retransmit the sig-nal, and the destination employs Maximum Ratio Combining( MRC) technique to combine the signals from the relays. Closed-form expressions of outage probability are derived under different interference situa-tions. Simulation results show that the analytical curves agree with the simulated ones very well, and the co-channel interference may have great effect on the system performance in some situation. The results will be helpful to the system design and parameter configuration of relay networks.
