最大比传输(Maximum Ratio Transmission,MRT)预编码是以最大化期望信号的输出信干噪比为设计原则得到的预编码方案。它通过对信道矩阵求共轭转置来获取发送预编码矩阵,计算复杂度低,频谱效率低。通过增加MRT预编码的期望用户的信道增益...最大比传输(Maximum Ratio Transmission,MRT)预编码是以最大化期望信号的输出信干噪比为设计原则得到的预编码方案。它通过对信道矩阵求共轭转置来获取发送预编码矩阵,计算复杂度低,频谱效率低。通过增加MRT预编码的期望用户的信道增益,改善MRT预编码的性能,引出了一种改进的MRT预编码方案(Improved Maximum Ratio Transmission,Improved-MRT),并根据MRT预编码在瑞利衰落信道下的闭式表达式得到Improved-MRT的频谱效率、中断概率、中断容量的近似闭式表达式。展开更多
On the basis of analyzing the history and characteristics of the undergroundspace exploitation and the urban space development in Guangzhou, and making a thorough study on theunderground space exploitation based on th...On the basis of analyzing the history and characteristics of the undergroundspace exploitation and the urban space development in Guangzhou, and making a thorough study on theunderground space exploitation based on the subway building, this paper points out some mam problemsin the exploitation of underground space in Guangzhou, and emphasizes that Guangzhou must developthe underground space on a large scale with the aid of the subway building, and puts forward aproposal on the urban space coordinate development between on-ground and underground in GuangzhouCity.展开更多
文摘最大比传输(Maximum Ratio Transmission,MRT)预编码是以最大化期望信号的输出信干噪比为设计原则得到的预编码方案。它通过对信道矩阵求共轭转置来获取发送预编码矩阵,计算复杂度低,频谱效率低。通过增加MRT预编码的期望用户的信道增益,改善MRT预编码的性能,引出了一种改进的MRT预编码方案(Improved Maximum Ratio Transmission,Improved-MRT),并根据MRT预编码在瑞利衰落信道下的闭式表达式得到Improved-MRT的频谱效率、中断概率、中断容量的近似闭式表达式。
文摘On the basis of analyzing the history and characteristics of the undergroundspace exploitation and the urban space development in Guangzhou, and making a thorough study on theunderground space exploitation based on the subway building, this paper points out some mam problemsin the exploitation of underground space in Guangzhou, and emphasizes that Guangzhou must developthe underground space on a large scale with the aid of the subway building, and puts forward aproposal on the urban space coordinate development between on-ground and underground in GuangzhouCity.
