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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Veröffentlicht in:MILCOM IEEE Military Communications Conference S. 622 - 627
1. Verfasser: Weerackody, Vijitha
Format: Tagungsbericht
Sprache:Englisch
Veröffentlicht: IEEE 01.11.2013
Schlagworte:
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
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Zusammenfassung: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