一种4/sup N/-QAM自适应决策装置，用于缓解时变平坦衰落信道造成的I/Q不平衡和损伤

信号处理 Pub Date : 2004-09-29 DOI:10.1109/MLSP.2004.1423031

C. Panazio, R.R. de F Attux

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引用次数: 0

摘要

在这项工作中，我们提出了一种基于Kohonen网络的自适应决策装置，该装置可以在存在由I/Q不平衡和加性高斯白噪声引起的非线性的情况下自动生成与4n-QAM的每个符号相关的类，还能够补偿由时变平坦衰落信道产生的相位和增益变化。我们的方案能够以较小的计算成本实现最大似然意义上的最优性。此外，由于所设计方案固有的跟踪能力，不需要自动增益控制器或锁相环

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A 4/sup N/-QAM adaptive decision device to mitigate I/Q imbalance and impairments caused by time-varying flat fading channels

In this work, we propose an adaptive decision device based on a Kohonen network that can automatically generate the classes associated with each symbol of a 4n-QAM in the presence of non-linearities caused by the I/Q imbalance and additive Gaussian white noise, being also capable of compensating phase and gain variations produced by a time-varying flat-fading channel. Our proposal can achieve optimality in the maximum-likelihood sense with a small computational cost. Furthermore, due to the tracking ability inherent to the devised scheme, there is no need for an automatic gain controller or a phase-locked loop

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来源期刊

信号处理

自引率

0.00%

发文量

5812

期刊介绍： Journal of Signal Processing is an academic journal supervised by China Association for Science and Technology and sponsored by China Institute of Electronics. The journal is an academic journal that reflects the latest research results and technological progress in the field of signal processing and related disciplines. It covers academic papers and review articles on new theories, new ideas, and new technologies in the field of signal processing. The journal aims to provide a platform for academic exchanges for scientific researchers and engineering and technical personnel engaged in basic research and applied research in signal processing, thereby promoting the development of information science and technology. At present, the journal has been included in the three major domestic core journal databases "China Science Citation Database (CSCD), China Science and Technology Core Journals (CSTPCD), Chinese Core Journals Overview" and Coaj. It is also included in many foreign databases such as Scopus, CSA, EBSCO host, INSPEC, JST, etc.