Research Article
Channel Estimation on the Forward Link of Multi-beam Satellite Systems
@INPROCEEDINGS{10.1007/978-3-642-23825-3_23, author={Michael Bergmann and Wilfried Gappmair and Carlos Mosquera and Otto Koudelka}, title={Channel Estimation on the Forward Link of Multi-beam Satellite Systems}, proceedings={Personal Satellite Services. Third International ICST Conference, PSATS 2011, Malaga, Spain, February 17-18, 2011, Revised Selected Papers}, proceedings_a={PSATS}, year={2012}, month={5}, keywords={Channel estimation multi-beam satellite systems forward link orthogonal and non-orthogonal training sequences}, doi={10.1007/978-3-642-23825-3_23} }- Michael Bergmann
Wilfried Gappmair
Carlos Mosquera
Otto Koudelka
Year: 2012
Channel Estimation on the Forward Link of Multi-beam Satellite Systems
PSATS
Springer
DOI: 10.1007/978-3-642-23825-3_23
Abstract
Multi-beam concepts are an essential component of next generation broadband satellite systems. Due to aggressive design goals, full frequency reuse is suggested in this context so that appropriate interference mitigation techniques have to be applied on both forward and return links. In this respect, channel estimation is of paramount importance. Throughout this paper, we are focusing on channel estimation of the forward link with emphasis on orthogonal and non-orthogonal training sequences used for this purpose. By analytical and simulation results, it is confirmed that the former are best suited in terms of the obtained jitter performance. On the other hand, non-orthogonal codes are not restricted by their length, but it is shown that a linearly independent set of unique words is significantly affected by an amplification of the noise component – a result not available from the technical literature on this subject so far. Furthermore, it is demonstrated that a simple correlation procedure, which might be employed for any kind of non-orthogonal training sequences, produces a non-negligible jitter floor in the higher SNR regime, which is primarily given by the cross-correlation properties of the code.
