LTE-A系统使用参考信号进行上行信道估计,而使用PUCCH format 2a/2b发送上行控制信息时,由于每个时隙只有一个SC-FDMA符号可以用于传输参考信号,所以此时接收端不能直接利用参考信号进行信道估计。给出了一种易实现且复杂度低的PUCCH 2a...LTE-A系统使用参考信号进行上行信道估计,而使用PUCCH format 2a/2b发送上行控制信息时,由于每个时隙只有一个SC-FDMA符号可以用于传输参考信号,所以此时接收端不能直接利用参考信号进行信道估计。给出了一种易实现且复杂度低的PUCCH 2a/2b的半盲检测接收算法,该算法利用ACK/NACK信息辅助信道估计。仿真结果表明,文中提出的方法能有效提高PUCCH 2a/2b的接收性能。展开更多
Based on minimum output energy,an improved blind multiuser detection algorithm is proposed by the use of Hopfield neural network.Compared with traditional algorithms,the proposed algorithm does not need the circuit fo...Based on minimum output energy,an improved blind multiuser detection algorithm is proposed by the use of Hopfield neural network.Compared with traditional algorithms,the proposed algorithm does not need the circuit for constraints.The resources are greatly saved and the complexity is reduced as well.The simulation results show that the performance of the improved algorithm is similar to that of the optimal multiuser detection algorithm which is not suitable for the mobile station.Compared with the traditional gradient blind multiuser detection algorithm,the convergence speed of the improved algorithm is quickened.展开更多
文摘LTE-A系统使用参考信号进行上行信道估计,而使用PUCCH format 2a/2b发送上行控制信息时,由于每个时隙只有一个SC-FDMA符号可以用于传输参考信号,所以此时接收端不能直接利用参考信号进行信道估计。给出了一种易实现且复杂度低的PUCCH 2a/2b的半盲检测接收算法,该算法利用ACK/NACK信息辅助信道估计。仿真结果表明,文中提出的方法能有效提高PUCCH 2a/2b的接收性能。
基金Supported by China Postdoctoral Science Foundation(No.20060390170)Science and Technology Development Foundation of Tianjin University(No.20060610)
文摘Based on minimum output energy,an improved blind multiuser detection algorithm is proposed by the use of Hopfield neural network.Compared with traditional algorithms,the proposed algorithm does not need the circuit for constraints.The resources are greatly saved and the complexity is reduced as well.The simulation results show that the performance of the improved algorithm is similar to that of the optimal multiuser detection algorithm which is not suitable for the mobile station.Compared with the traditional gradient blind multiuser detection algorithm,the convergence speed of the improved algorithm is quickened.
