盲自适应多用户检测器只需知道期望用户的扩频码及定时信息 ,就可以实现对多址干扰的有效抑制。本文提出了一种基于 TH ( Tank and Hopfield)神经网络的盲多用户检测器 ,通过采用 TH神经网络来计算检测器的最优权值 ,从而提高了检测器...盲自适应多用户检测器只需知道期望用户的扩频码及定时信息 ,就可以实现对多址干扰的有效抑制。本文提出了一种基于 TH ( Tank and Hopfield)神经网络的盲多用户检测器 ,通过采用 TH神经网络来计算检测器的最优权值 ,从而提高了检测器的收敛速度。仿真实验的结果表明这一方法具有良好的多址干扰抑制能力。展开更多
Blind adaptive multiuser detector has become a research hotspot in recent years due to a number of advantages, but many blind adaptive algorithms involve low convergence rate. This paper presents a novel stochastic bl...Blind adaptive multiuser detector has become a research hotspot in recent years due to a number of advantages, but many blind adaptive algorithms involve low convergence rate. This paper presents a novel stochastic blind adaptive multiuser detector without requiring training sequences, which needs only two system parameters: the signature sequence of the desired user i, s i and the variance of the additive white Gaussian noise (AWGN),σ 2. Simulation results show that by reasonably choosing time varying step size, the proposed detector can not only improve the convergence rate, but also reduce the limiting NSE (Normalized Squared Error) values, so it can effectively increase the performance of the system.展开更多
文摘盲自适应多用户检测器只需知道期望用户的扩频码及定时信息 ,就可以实现对多址干扰的有效抑制。本文提出了一种基于 TH ( Tank and Hopfield)神经网络的盲多用户检测器 ,通过采用 TH神经网络来计算检测器的最优权值 ,从而提高了检测器的收敛速度。仿真实验的结果表明这一方法具有良好的多址干扰抑制能力。
文摘Blind adaptive multiuser detector has become a research hotspot in recent years due to a number of advantages, but many blind adaptive algorithms involve low convergence rate. This paper presents a novel stochastic blind adaptive multiuser detector without requiring training sequences, which needs only two system parameters: the signature sequence of the desired user i, s i and the variance of the additive white Gaussian noise (AWGN),σ 2. Simulation results show that by reasonably choosing time varying step size, the proposed detector can not only improve the convergence rate, but also reduce the limiting NSE (Normalized Squared Error) values, so it can effectively increase the performance of the system.
