CAJ | 학술논문

为了有效提高中继信道的数据传输速率,在全工和半双工模式下分别对中继和目的端带相关噪声的高斯双天线中继信道进行研究。通过计算得出信道容量的上界和在译码前传、压缩前传和放大前传三大中继策略下的可达速率,并给出分别对应于传统退化高斯中继信道和逆退化高斯中继信道的两种容量可达情形。运用MAT-LAB对不同信道设定的各类可达速率进行仿真,数值分析结果显示：尽管译码前传完全忽视了噪声相关性,然而另外两种策略能潜在地利用这些边信息;对于不同的噪声相关系数,三种中继策略中没有一种总是优于其它策略;中继采用双天线技术,具有提高传输速率的作用。
위료유효제고중계신도적수거전수속솔,재전공화반쌍공모식하분별대중계화목적단대상관조성적고사쌍천선중계신도진행연구。통과계산득출신도용량적상계화재역마전전、압축전전화방대전전삼대중계책략하적가체속솔,병급출분별대응우전통퇴화고사중계신도화역퇴화고사중계신도적량충용량가체정형。운용MAT-LAB대불동신도설정적각류가체속솔진행방진,수치분석결과현시：진관역마전전완전홀시료조성상관성,연이령외량충책략능잠재지이용저사변신식;대우불동적조성상관계수,삼충중계책략중몰유일충총시우우기타책략;중계채용쌍천선기술,구유제고전수속솔적작용。
To improve the rate of transmitting data efficiently,focusing on the Gaussian two-antenna relay channels in full-duplex and half-duplex mode,where the noises at the relay and destination are arbitrarily correlated.Firstly,it derived the capacity upper bound and the achievable rates with three schemes: Decode-and-Forward(DF),Compress-and-Forward(CF),and Amplify-and-Forward(AF) through the calculation;then gave two capacity achievable results,the channel is equivalent to the traditional Gaussian degraded relay channel and the Gaussian reversely-degraded relay channel,respectively.The simulation on achievable rates is done using MATLAB in different channels,and analysis results show that despite DF completely disregards the noise correlation,the other two strategies,however,can potentially exploit such extra information;besides,none of the three relay schemes always outperforms the others over different correlation coefficients;moreover,the use of two-antenna technology at relay can improve the rate of transmitting data.