In this paper, we propose a new multi-user Rake receiver, based on the interference mutualization with a matrix representation for Multiple Input Single Output MISO channel. The proposed system used the Modified Gegen...In this paper, we propose a new multi-user Rake receiver, based on the interference mutualization with a matrix representation for Multiple Input Single Output MISO channel. The proposed system used the Modified Gegenbauer functions in order to generate the signal and to ensure the multi users transmission system. The new proposed receiver allows, using the temporal and special diversity, to avoid the interferences between symbols and to improve the system performances in terms of Bit Error Rate BER and interferences between users with a low algorithm complexity. The proposed solution is based on the classical Rake receiver associated with the equalizer receiver. In order to adapt the Rake approach, in single detection case and in multi users Ultra Wide Band environment, we propose a multi-user Rake receiver using the matrix form. Our proposed system is evaluated in terms of channel effects and multi users’ interferences.展开更多
Research work for some time now has shown that fading wireless channels present enormous advantages if properly exploited through a Multiple-Input Multiple-Output (MIMO) communication model. In this paper, we demonstr...Research work for some time now has shown that fading wireless channels present enormous advantages if properly exploited through a Multiple-Input Multiple-Output (MIMO) communication model. In this paper, we demonstrate the advantages of implementing the MIMO communication model by investigating three communication techniques, namely, Single-Input Single-Output (SISO), Multiple-Input Single-Output (MISO) and MIMO for WiMAX communication systems. The performances of these communication techniques are analyzed and compared for three scenarios - rural environment, TGV (high-speed train) environment and urban environment by using the models to investigate several communication parameters.展开更多
当MISO(Multi Input Single Output)系统存在的加性人工噪声服从一般分布时,系统保密容量讨论难度较大。为推导一般意义多天线系统下的保密容量,引入了信道等效特征的概念。利用信道特征阐明了人工噪声方法的物理概念,并推导出了具有普...当MISO(Multi Input Single Output)系统存在的加性人工噪声服从一般分布时,系统保密容量讨论难度较大。为推导一般意义多天线系统下的保密容量,引入了信道等效特征的概念。利用信道特征阐明了人工噪声方法的物理概念,并推导出了具有普适性的人工噪声方法保密容量上下限,进一步结合熵功率,推导出AWGN信道下的保密容量解析式。理论分析和仿真得出,通过人工噪声可使平均保密容量增大,从而提高MISO系统的安全性。展开更多
文摘In this paper, we propose a new multi-user Rake receiver, based on the interference mutualization with a matrix representation for Multiple Input Single Output MISO channel. The proposed system used the Modified Gegenbauer functions in order to generate the signal and to ensure the multi users transmission system. The new proposed receiver allows, using the temporal and special diversity, to avoid the interferences between symbols and to improve the system performances in terms of Bit Error Rate BER and interferences between users with a low algorithm complexity. The proposed solution is based on the classical Rake receiver associated with the equalizer receiver. In order to adapt the Rake approach, in single detection case and in multi users Ultra Wide Band environment, we propose a multi-user Rake receiver using the matrix form. Our proposed system is evaluated in terms of channel effects and multi users’ interferences.
文摘Research work for some time now has shown that fading wireless channels present enormous advantages if properly exploited through a Multiple-Input Multiple-Output (MIMO) communication model. In this paper, we demonstrate the advantages of implementing the MIMO communication model by investigating three communication techniques, namely, Single-Input Single-Output (SISO), Multiple-Input Single-Output (MISO) and MIMO for WiMAX communication systems. The performances of these communication techniques are analyzed and compared for three scenarios - rural environment, TGV (high-speed train) environment and urban environment by using the models to investigate several communication parameters.
文摘当MISO(Multi Input Single Output)系统存在的加性人工噪声服从一般分布时,系统保密容量讨论难度较大。为推导一般意义多天线系统下的保密容量,引入了信道等效特征的概念。利用信道特征阐明了人工噪声方法的物理概念,并推导出了具有普适性的人工噪声方法保密容量上下限,进一步结合熵功率,推导出AWGN信道下的保密容量解析式。理论分析和仿真得出,通过人工噪声可使平均保密容量增大,从而提高MISO系统的安全性。
