Channel Adaptive Techniques in the Presence of Channel Prediction Inaccuracy

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2004

Autores

António Aguiar (Autor) FEUP; H. Karl (Autor) Outra; A. Wolisz (Autor) Outra

Ata de Conferência Internacional

Título: Proceedings of the 59th IEEE Vehicular Technology Conference (VTC-Spring 2004)

Páginas: 1-5

VTC Spring 2004

Milan, Italy, May 2004

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia de comunicações

Outras Informações

Abstract (EN): Adapting transmission parameters to the future channel state is an appealing approach to improve efficiency in wireless communication. Adaptation requires predicting the channel state. Current channel-adaptive techniques assume that the prediction is perfect. In this paper, we claim that neglecting the prediction error can lead to poor performance results, possibly even worse than without prediction at all. We have simulated the behaviour of adaptive modulation and adaptive scheduling, as well as a combination of both for inaccurate channel prediction. The results show that prediction inaccuracy can degrade the performance of wireless communications when channel adaptive techniques are used. The sensitivity to inaccuracy is, however, dependent on several factors, like the adaptive technique used or the average received signal-to-noise level at the receiver

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5