Low complexity LMS based adaptive iterative receiver for CDMA systems
Low complexity LMS based adaptive iterative receiver for CDMA systems
复制标题
用于 CDMA 系统的基于低复杂度 LMS 的自适应迭代接收机
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Chakree Teekapavisit
中科院分区：
文献类型：
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作者：
Teav Keovkolya;Chakree Teekapavisit
提出了一种用于分层空时编码CDMA（LSTC-CDMA）系统的自适应迭代频域接收机。提出的接收机，基于联合自适应迭代检测和解码算法，自适应地消除共信道干扰（CCI）和减轻多址干扰（MAI），也有一个显着减少的计算复杂度与时域接收机相比，具有相同的性能。在自适应检测中，前馈滤波器和反馈滤波器均采用最小均方（LMS）算法。为了提高自适应检测器的收敛速度，提出了一种部分滤波梯度LMS（PFGLMS）算法。性能测试结果表明，在一定信噪比范围内，该自适应接收机可以达到无干扰单用户性能。
An adaptive iterative frequency domain receiver for a Layered Space-Time Coded CDMA (LSTC-CDMA) system has been proposed in this paper. The proposed receiver, based on a joint adaptive iterative detection and decoding algorithm, adaptively cancels Co-Channel Interference (CCI) and mitigates Multiple Access Interference (MAI), and also has a significant reduction in computation complexity with the same performance compared to a time domain receiver. The Least Means Square (LMS) algorithm is used for both feed-forward filter and feedback filter in the adaptive detection. A Partially Filtered Gradient LMS (PFGLMS) algorithm is also proposed to improve the convergence speed of the adaptive detector. The performance results show that the proposed adaptive receiver can approach the interference-free single user performance for a certain range of the signal to noise ratio (SNR).
影响因子：
11.2
作者：
Falconer, D;Ariyavisitakul, SL;Eidson, B
通讯作者：
Eidson, B