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|Type:||Artigo de evento|
|Title:||A 4n-qam Adaptive Decision Device To Mitigate I/q Imbalance And Impairments Caused By Time-varying Flat Fading Channels|
De F. Attux R.R.
|Abstract:||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 nonlinearities 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. ©2004 IEEE.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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