dc.contributor.author | Quinn, Anthony | en |
dc.date.accessioned | 2011-07-12T13:23:00Z | |
dc.date.available | 2011-07-12T13:23:00Z | |
dc.date.created | 23-24 June 2011 | en |
dc.date.issued | 2011 | en |
dc.date.submitted | 2011 | en |
dc.identifier.citation | A. Das and A. Quinn, A Variational Bayes Approach to Decoding in a Phase-Uncertain Digital Receiver, IET Irish Signals and Systems Conference, Trinity College Dublin, 23-24 June 2011, 2011 | en |
dc.identifier.other | Y | en |
dc.identifier.uri | http://hdl.handle.net/2262/57576 | |
dc.description | PUBLISHED | en |
dc.description | Trinity College Dublin | en |
dc.description.abstract | This paper presents a Bayesian approach to symbol and phase inference in a phase-unsynchronized digital receiver. It primarily extends [Quinn 2011] to the multi-symbol case, using the variational Bayes (VB) approximation to deal with the combinatorial complexity of the phase inference in this case. The work provides a fully Bayesian extension of the EM-based framework underlying current turbo-synchronization methods, since it induces a von Mises prior on the time-invariant phase parmeter. As a result, we achieve tractable iterative algorithms with improved robustness in low SNR regimes, compared to the current EM-based approaches. As a corollary to our analysis we also discover the importance of prior regularization in elegantly tackling the significant problem of phase ambiguity. | en |
dc.language.iso | en | en |
dc.rights | Y | en |
dc.subject | Communication engineering and systems | en |
dc.subject | Phase-Uncertain Digital Receiver | en |
dc.title | A Variational Bayes Approach to Decoding in a Phase-Uncertain Digital Receiver | en |
dc.title.alternative | IET Irish Signals and Systems Conference | en |
dc.type | Conference Paper | en |
dc.contributor.sponsor | Science Foundation Ireland (SFI) | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/aquinn | en |
dc.identifier.rssinternalid | 73996 | en |
dc.contributor.sponsorGrantNumber | 08/RFP/MTH1710 | en |
dc.identifier.rssuri | http://arxiv.org/abs/1107.0662 | en |