Skip to Main content Skip to Navigation
Conference papers

Effect of residual channel estimation errors in random access methods for satellite communications

Abstract : In recent random access methods used for satellite communications, collisions between packets are not considered as destructive. In fact, to deal with the collision problem, successive interference cancellation is performed at the receiver. Generally, it is assumed that the receiver has perfect knowledge of the interference. In practice, the interference term is affected by the transmission channel parameters, i.e., channel attenuation, timing offsets, frequency offsets and phase shifts, and needs to be accurately estimated and canceled to avoid performance degradation. In this paper, we study the performance of an enhanced channel estimation technique combining estimation using an autocorrelation based method and the Expectation-Maximization algorithm integrated in a joint estimation and decoding scheme. We evaluate the effect of residual estimation errors after successive interference cancellation. To validate our experimental results, we compare them to the Cramer-Rao lower bounds for the estimation of channel parameters in case of superimposed signals.
Complete list of metadata

Cited literature [14 references]  Display  Hide  Download
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Wednesday, February 8, 2017 - 1:53:04 PM
Last modification on : Thursday, March 18, 2021 - 2:15:47 PM
Long-term archiving on: : Tuesday, May 9, 2017 - 1:18:26 PM


Files produced by the author(s)


  • HAL Id : hal-01461705, version 1
  • OATAO : 17188


Karine Zidane, Jérôme Lacan, Marie-Laure Boucheret, Charly Poulliat, Mathieu Gineste, et al.. Effect of residual channel estimation errors in random access methods for satellite communications. 81st IEEE Vehicular Technology Conference (VTC Spring 2015), May 2015, Glasgow, Scotland, United Kingdom. pp. 1-5. ⟨hal-01461705⟩



Record views


Files downloads