Impact of channel prediction on adaptive coded modulation performance in Rayleigh fading (2004)
| Venue: | IEEE Transactions on Vehicular Technology |
| Citations: | 11 - 2 self |
BibTeX
@ARTICLE{Øien04impactof,
author = {Geir Egil Øien and Henrik Holm and Kjell Jørgen Hole},
title = {Impact of channel prediction on adaptive coded modulation performance in Rayleigh fading},
journal = {IEEE Transactions on Vehicular Technology},
year = {2004},
volume = {53},
pages = {758--769}
}
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Abstract
Adaptive coded modulation (ACM) is a promising tool for increasing the spectral efficiency on time-varying mobile channels while keeping a predictable bit error rate. An important restriction in systems with such a transmission scheme is that the transmitter needs to have accurate channel state information (CSI). Earlier analysis of ACM systems usually assume that the transmitter has perfect knowledge of the channel, or that the CSI is accurate but outdated. In this paper, we investigate the effects of predicting the CSI using a linear fading envelope predictor, in order to enhance the performance of an ACM system. For the case when multidimensional trellis codes are used on Rayleigh fading channels, we obtain approximative closed-form expressions for bit error rate and average spectral efficiency. Numerical examples are given for the case of Jakes correlation profile and maximum a posteriori-optimal predictor coefficients.
