Finite sample identifiability of multiple constant modulus sources

Amir Leshem, Nicolas Petrochilos, Alle Jan Van Der Veen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

We prove that mixtures of continuous constant modulus sources can be identified with probability 1 with a finite number of samples (under noise-free conditions). This strengthens earlier results which only considered an infinite number of samples. The proof is based on the linearization technique of the Analytical Constant Modulus Algorithm, together with a simple inductive argument. We then study the finite alphabet case. In this case we provide an upper bound on the probability of non-identifiability for finite sample of sources. We show that under practical assumptions, this upper bound is tighter than the currently known bound.

Original languageEnglish
Title of host publication2002 IEEE Sensor Array and Multichannel Signal Processing Workshop Proceedings, SAME 2002
PublisherIEEE Computer Society
Pages408-412
Number of pages5
ISBN (Electronic)0780375513
DOIs
StatePublished - 2002
Externally publishedYes
EventIEEE Sensor Array and Multichannel Signal Processing Workshop, SAME 2002 - Rosslyn, United States
Duration: 4 Aug 20026 Aug 2002

Publication series

NameProceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop
Volume2002-January
ISSN (Electronic)2151-870X

Conference

ConferenceIEEE Sensor Array and Multichannel Signal Processing Workshop, SAME 2002
Country/TerritoryUnited States
CityRosslyn
Period4/08/026/08/02

Bibliographical note

Publisher Copyright:
© 2002 IEEE.

Keywords

  • Blind source separation
  • Chernoff bound
  • Constant modulus signals
  • Finite sample analysis
  • Identifiability
  • Large deviations
  • PSK

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