Adaptive Coding and Modulation for Satellite Communication Links in the Presence of Channel Estimation Errors

Adaptive coding and modulation (ACM) schemes are very useful in satellite communication systems because they provide variable coding rates and modulation levels that can be used under different channel gain conditions. The effectiveness of the ACM scheme depends on the accuracy of the channel estima...

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Bibliographic Details
Published in:MILCOM IEEE Military Communications Conference pp. 622 - 627
Main Author: Weerackody, Vijitha
Format: Conference Proceeding
Language:English
Published: IEEE 01.11.2013
Subjects:
Adaptive coding and modulation
Channel estimation
communications on-the-move
Maximum likelihood estimation
Modulation
Quantization (signal)
Receivers
satellite communications
Satellites
Signal to noise ratio
ISSN:2155-7578
Online Access:Get full text
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Summary:Adaptive coding and modulation (ACM) schemes are very useful in satellite communication systems because they provide variable coding rates and modulation levels that can be used under different channel gain conditions. The effectiveness of the ACM scheme depends on the accuracy of the channel estimates. Because channel estimation plays a key role in ACM schemes, we present an estimation technique for the channel SNR. Furthermore, because channel SNR estimates are unreliable, we modify the ACM scheme to incorporate channel estimation errors. It is shown that this scheme significantly improves the performance of the ACM scheme.
ISSN:2155-7578
DOI:10.1109/MILCOM.2013.112